AlCuMg Alloys Research Articles

Enhancing homogenous precipitation and strengthening effectiveness in AlCuMg alloy

Enhancing homogenous precipitation and strengthening effectiveness in AlCuMg alloy

Synthesis of an Ultra-high Hardness Nanostructured AlSi10Mg Alloy via A Hybrid Laser Powder Bed Fusion/High-Pressure Torsion Approach

The hybrid combination of laser powder bed fusion (L-PBF) and high-pressure torsion, respectively an additive manufacturing (AM) and severe plastic deformation (SPD) has recently emerged as an important field of study due to the ability to produce novel nanostructured metals/alloys with simultaneous enhancements in mechanical (hardness, yield and tensile strengths) and functional (corrosion and wear) performances. Pioneering studies on the hybrid L-PBF/HPT approach was focused on 316L stainless steel (316L SS) and AlCuMg alloys due to their widespread engineering applications. AlSi10Mg, an alloy widely used in the automotive industry is expected to benefit from this hybrid combination but has not been investigated before. Thus, this study aims to investigate the microstructural features and hardness of the nanostructured AlSi10Mg attained by the hybrid L-PBF/HPT technique via transmission electron microscopy (TEM) and Vickers microhardness (HV) measurements, respectively. The results showed novel microstructures, including nano-scale grain sizes (< 200 nm), nano-sized Mg2Si precipitates (~200 nm), and dense dislocation networks. The average hardness value was determined as 230 ± 20 HV, homogeneously distributed throughout the disk surface as indicated by the low deviation (error bar). The microstructures of L-PBF/HPT-synthesised AlSi10Mg are different and significantly refined than conventionally cast AlSi10Mg, which contributed to the two- to four-fold hardness (typical HV values of as-cast AlSi10Mg ranges from 60 – 68 HV) increase via grain boundary and dislocation strengthening mechanisms.

Influence of step-by-step cerium-based conversion and polydopamine duplex coating on stir cast Al[sbnd]Cu[sbnd]Mg alloys mitigating saltwater corrosion

Intergranular corrosion (IGC) originates from secondary phases along the grain boundaries in AlCuMg-based alloys can dramatically compromises the tensile properties for structural applications. Insofar cerium-based conversion coating (CeCC) has been exploited to provide a cathodic barrier and mitigate intergranular crack propagation. However, CeCC-based coating deposited on secondary phases in AlCuMg alloys limits its potential use to improve corrosion resistance in the chlorinated environment. Herein, mussel-inspired polydopamine (PDA) coating has been explored on CeCC-treated AlCuMg alloy, providing both anodic and cathodic protection and significantly improving the corrosion resistance in 0.1 M NaCl solution. The micro-morphology of CeCC and CeCC/PDA duplex coating was investigated using X-ray diffraction, field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), two and three-dimensional surface topography, atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS) reveal the formation of aluminum and/or cerium oxide/hydroxide-based complex coating [Ce2O3/CeO2/Al2O3/Al(OH)3] on the Cu-rich secondary phases [Al2Cu, Al2Cu(Mg), and Al5Si(CuMg)] providing cathodic protection. However, additional PDA treatment for 12 h provided uniform surface coverage of PDA particles along the grain boundaries as well as α-Al matrix owing to the formation of hydrogen bonding with hydroxy species [Al(OH)3/Ce(OH)4] and catechol and amine functional groups present in PDA. Potentiodynamic polarization (PDP) illustrates that the CeCC/PDA specimens can successfully retard the corrosion of AlCuMg alloy. In particular, CeCC-60 s/PDA specimen demonstrated the lowest corrosion current density (Icorr ∼ 0.16 μA/cm2), and the highest polarization resistance (Rp ∼ 119 kΩ·cm2) during electrochemical corrosion in 0.1 M NaCl solution. The corroded surface discloses accelerated IGC was evident on bare and CeCC specimens. On the contrary, CeCC-60 s/PDA specimen demonstrated a significant reduction in IGC and drastically improved corrosion rate.

Towards high strength and ductility of Al–Cu-Mg alloy via cyclic and monotonic pre-straining followed by ageing

This article presents an investigation of the ageing response of modern high-strength aluminium alloy 2519 (Al–5.64Cu-0.33Mn-0.23Mg-0.01Si (wt%)) after cyclic strengthening (CS). The impact of the pre-straining value on the mechanical properties, microstructure and phase composition was elucidated via hardness and tensile testing, analytical transmission and orientation imaging electron microscopy. The results show that cyclic hardening has a significant impact on the ageing behaviour of the alloy. Applying cyclic pre-straining in conjunction with monotonic enhances strength and ductility at once. This novel high-performance treatment results in superior strength-ductility combination. The improved mechanical properties are attributed to the observed changes in microstructure. The introduction of vacancies and dislocations, by repetitive and elastic straining before artificial ageing, leads to great homogeneous structure and an increase in the number density and volume fraction of the main strengthening phases (θ′ and Ω) and clusters/zones. Therefore, this work should suggest a strategy for developing a novel treatment of aluminium alloys with excellent mechanical properties.

Effect of Er and Si co-microalloying on mechanical properties and microstructures of AlCuMg alloys

The effect of Er and Si on the evolution of precipitates in Al–Cu–Mg alloys during elevated temperature exposure was investigated. The Er segregation in θ′-Al2Cu precipitates and Si/Mg co-segregation at the interfaces of θ'/Al matrix are experimentally observed in Al–Cu–Mg–Si–Er alloy, which finally contributes to the heat resistance of the Al–Cu–Mg–Si–Er alloy. Si enhances formation of the Q″ phases as nucleation sites for the θ′ phases, resulting in a refined distribution of θ′ phases. Al–Cu–Mg alloy with high strength as well as high thermal stability is obtained by co-adding Er and Si. The high-temperature yield strength (YS) of Al–Cu–Mg–Si–Er alloy at 225 °C are increased by 37 MPa compared with that of Al–Cu–Mg alloy. Simultaneously, the addition of Er significantly increases the elongation of Al–Cu–Mg–Si–Er alloy.

TiB2 Parçacık Takviyeli AlCuMg Kompozitlerin Üretilebilirliğinin Araştırılması

Al ve alaşımları otomotiv, havacılık, biyomedikal ve uzay gibi çeşitli endüstrilerde sahip oldukları özelliklerinden (yüksek korozyon direnci, ısı direnci, elektriksel özellikler, mukavemet ve tokluk gibi) dolayı çeşitli endüstrilerde kompozit malzemeler olarak kullanılmaktadır. Ancak, Al ve alaşımlarının sanayide kullanımında mekanik özellikleri bakımından problemlerle karşılaşılmaktadır. AlCuMg ve alaşımlarının mekanik özelliklerini arttırmaya yönelik çalışmalara literatürde çok az bir çalışma olduğu tespit edilmiştir. Bu çalışmada TiB2 parçacıkları, AlCuMg matrisi içerisine farklı oranlarda ilave edilerek üç boyutlu turbula ile 1 saat süre ile karıştırılmıştır. Deneysel çalışmalar sonucunda mikroyapı ve mekanik özellikleri bakımında AlCuMg matrisli kompozit malzemelerinin üretilebilirliği amaçlanmıştır. Numuneler üretim aşamasında Al, Cu, Mg ve TiB2 tozları farklı kimyasal bileşim oranlarında karıştırılarak toz metalurjisi ve erimiş tuz korumalı sentez yöntemi ile üretilmiştir. Üretilen numunelerin oksitlenmesini engellemek ve sinterleme esnasında sentezleme işlemi için erimiş tuz korumalı sinterleme işlemi tercih edilmiştir. Bu erimiş tuz korumalı yöntemde, tuz olarak KBr (potasyum bromür) tercih edilmiştir. Üretim sonrasında numunelerin karakterizasyon işlemleri için taramalı elektron mikroskonu (SEM), enerji dispersiv spektrum (EDS) ve X-Işını kırınım (XRD) analizleri uygulanmıştır. Üretilen numunelerin mukavemet ve mekanik karakterizasyonu için mikrosertlik ölçümleri uygulanmıştır. TiB2 parçacıkları yüksek ergime sıcaklığı, yüksek mukavemet ve yüksek mekanik özellikleri gibi değerlere sahip oldukları için AlCuMg alaşımının mikroyapı ve mekanik özelliklerini arttırdığı tespit edilmiştir.

Cracking behaviour of high-strength AA2024 aluminium alloy produced by Laser Powder Bed Fusion

Most wrought aluminium alloys of the 2000 series are difficult to manufacture by laser powder bed fusion (L-PBF) due to the formation of cracks during building. To date, the effects of processing regimes on crack formation are still not well understood. In this study we performed a detailed microstructural characterisation of crack development in the AlCuMg alloy AA2024 to quantify the extent of cracking and porosity arising from a range of different process parameters. Two samples, produced with different build parameters, were selected for in-depth study by scanning and transmission electron microscopy; these had similar low levels of porosity but high (H - 2.6 ± 0.4 mm/mm2) and low (L - 1.5 ± 0.3 mm/mm2) crack densities respectively. Based on distinct morphological features and characteristic length, we differentiate hot cracks from solid state cracks. Hot tears form at high angle grain boundaries and are associated with micron-sized gas pores as well as intermetallic phases in both samples. The solidification and cracking behaviour are modelled with the aid of a Scheil-Gulliver model that includes solute trapping. This approach predicts differences in hot-crack-susceptibilities, due to different solidification velocities, in line with experimental observations. The sample H, of high crack density, also experiences the higher cooling rate, and hence strain rate, which contributes to the greater propagation of cold cracks in the low fracture toughness AA2024. The observation of cracking associated with microporosity and the use of a Scheil-based solidification model, including solute trapping, provide new insights into the complex problem of hot tearing during L-PBF.

Genetic structural phase evolution from Li-containing S-like phase precipitates towards S-phase in AlCuLiMg alloys

The S-phase is one of the most effective strengthening precipitates in the aluminum alloys for aerospace applications. Its precipitation mechanism upon thermal aging seems to have been well revealed and understood in the studies of AlCuMg alloys. Here we report an entirely different scenario of S-phase formation in an AlCuLiMg alloy. Using atomic-resolution imaging in transmission electron microscopy, it is shown that upon aging this alloy can form a precipitate microstructure dominated by Li-containing Guinier-Preston-Bagaryatsky zones and so-called S-like phase precipitates that are previously unknown. Upon formation a S-like precipitate initiates with a monoclinic structure of Al2CuMg2/3(MgLi)1/3, and may then genetically evolve with a dynamic composition of Al2CuMgLix (1/3 ≥ x > 0) towards the orthorhombic S-phase (Al2CuMg). This phase change is more a genetic structural phase evolution rather than a conventional phase transformation. Our study shows that it is possible for AlCuLiMg alloys to form a featured microstructure overwhelmed by S-like/S-phase and T1-phase precipitates, without the commonly observed δ′/θ′/δ′ composite precipitates.

Enhanced thermal-stability of AlCuMg alloy by multiple microalloying segregation of Mg/Si/Sc solute

The multiple microalloying influences of Si & Sc on the aging behavior and thermal stability of Al-4Cu-0.5Mg alloy were systematically studied. The result revealed that precipitation evolution of Al-4.0Cu-0.5Mg alloy was closely relevant to the content of Si. Si enhanced formation of the Q′ phases serving as nucleation sites for the θ′-Al2Cu phases, resulting in a refined distribution of θ′ phases. Al-4.0Cu-0.5Mg-0.40Si-0.1Sc alloy is a combination of high strength and outstanding heat resistance because of the finer and denser Q' & θ′ as well as the segregational structure of Mg, Si and Sc. Especially, the Sc-segregation at the interfaces of θ'/Al is essential to stabilize the microstructure of θ′ precipitates at high temperatures. The solute segregation of Sc atoms in θ′ phases inhibits their coarsening rate. The high-temperature strength of Al-Cu-Mg-Si-Sc alloy are increased dramatically compared with that of typical heat resistant 2618 aluminum alloy.

Studies on the influence of Alti5b1 modifier on the structure and properties of alcumg ALLOYS

New materials used in various industries require sufficiently high mechanical properties, fine-grained structure and ease of metal forming while minimizing production costs. For this reason, work is being carried out to develop new groups of alloys that make it possible to increase the strength of the obtained components while reducing their weight, and thus reducing production costs. This article focuses on two aluminium-based alloys with different content of alloying additives: copper and magnesium i.e., AlCu3Mg3 and AlCu4.5Mg6, which were produced by metallurgical synthesis. The as-cast alloys were characterized for their basic physical, mechanical and electrical properties and were subjected to structural analysis. In the next stage, the alloys were modified with 100, 500, 1000 and 2000 ppm of titanium and then their hardness, electrical conductivity and density were tested. Samples were also subjected to microstructural analysis. The obtained results allowed to examine the evolution of the AlCuMg alloy properties depending on the content of alloy additives and the amount of used modifier.

The synergetic effect of Si and Sc on the thermal stability of the precipitates in AlCuMg alloy

The effect of Si and Sc on the evolution of the precipitates during aging in Al4.0Cu0.5 Mg alloys was investigated by means of microhardness tests and transmission electron microscope. The results show that Si can significantly refine the size of θ′ phases, because addition of Si introduces a considerable amount of small, uniformly dispersed Al–Cu–Mg–Si (Q) quaternary phases, which provides nucleation sites for the θ′ phases. Sc atoms segregate at the interfaces between the matrix and the θ′-Al2Cu precipitates in AlCuMgSiSc alloy. The segregation of Sc atoms inhibits the growth of the θ′ phases and improves the thermal stability of the θ′ phases. At the same time, the segregation of Sc atoms in Q phases restrains the coarsening of the Q phases, which also contributes to the thermal stability of the θ′ phases. The co-addition of Si and Sc thus leads to a combination of high strength and high thermal stability of the Al–Cu–Mg–Si-Sc alloy.

The effect of pre-deformation on the precipitation behavior of AlCuMg(Si) alloys with low Cu/Mg ratios

The addition of a trace amount of Si significantly affects the precipitation sequence of the Al–Cu–Mg alloy with a low Cu/Mg ratio, such as forming Si-modified Guinier-Preston-Bagaryatsky (GPB) zones to suppress the precipitation of the S phase. The introduction of pre-deformation also affects the precipitation behavior during the subsequent aging process. In this paper, the atomic-resolution high-angle-annular-dark-field (HAADF) imaging technique and first-principles calculation are used to study the effect of pre-deformation on the precipitation behavior of an Al-3.0Cu-1.8Mg-0.5Si alloy during aging at 180 °C. In order to learn the effect of minor Si-addition, a Si-free alloy with similar chemical composition is also studied. It is found that for Si-free alloy, the 6% pre-deformation promotes the precipitation of the S phase dispersedly during the subsequent aging, leading to an increase of the peak hardness. For Si-containing alloy, the 6% pre-deformation prior to aging suppresses the precipitation of Si-modified GPB zone acting as the original main strengthening precipitates and promotes the formation of successive composite precipitates including the S phase, various GPB zones, C phase and sub-units of C/Qʹ phase. The successive composite precipitates are easy to grow up and coarsen, which weakens the contribution of precipitation strengthening compared to the small Si-modified GPB zone. As such, the 6% pre-deformation prior to aging at 180 °C provides a positive strengthening effect for Si-free alloy, but a negative strengthening effect for the Si-containing alloy.

Tetragonal-prism-like Guinier–Preston–Bagaryatsky zones in an AlCuMg alloy

In high-performance AlCu(Li)Mg aluminum alloys, Guinier–Preston–Bagaryatsky zones frequently form upon thermal ageing and play an important role in hardening the alloys. Here we report a novel type of highly-symmetric Guinier–Preston–Bagaryatsky zones formed in a high Cu-content AlCuMg alloy. Using atomic-resolution electron microscopy and first-principles calculations, we precisely characterized their morphology and structures. It is shown that these precipitates undergo three stages of structural and compositional evolution, leading to formation of these tetragonal-prism-like one-dimensional precipitated crystals and their early-stage precursors.

Li-atoms-induced structure changes of Guinier–Preston–Bagaryatsky zones in AlCuLiMg alloys

Guinier–Preston–Bagaryatsky (GPB) zones are the well-known strengthening precipitates of AlCuMg alloys formed upon thermal ageing. Here we report that when formed in AlCuLiMg alloys the GPB zones can change significantly in morphology and structure. It is shown that though they do still consist of Al, Cu and Mg elements fundamentally, the GPB zones in AlCuLiMg alloys have a rather different structure due to a featured Li-segregation at their interfaces with the matrix and possible Li-replacement of partial Mg atoms in the structure. As such the Li-containing GPB zones often develop from one-dimensional to quasi-two-dimensional precipitates.

In situ structural characterization of ageing kinetics in aluminum alloy 2024 across angstrom-to-micrometer length scales

The precipitate structure and precipitation kinetics in an AlCuMg alloy (AA2024) aged at 190 °C, 208 °C, and 226 °C have been studied using ex situ Transmission Electron Microscopy (TEM) and in situ synchrotron-based, combined ultra-small angle X-ray scattering, small angle X-ray scattering (SAXS), and wide angle X-ray scattering (WAXS) across a length scale from sub-Angstrom to several micrometers. TEM brings information concerning the nature, morphology, and size of the precipitates while SAXS and WAXS provide qualitative and quantitative information concerning the time-dependent size and volume fraction evolution of the precipitates at different stages of the precipitation sequence. Within the experimental time resolution, precipitation at these ageing temperatures involves dissolution of nanometer-sized small clusters and formation of the planar S phase precipitates. Using a three-parameter scattering model constructed on the basis of TEM results, we established the temperature-dependent kinetics for the cluster-dissolution and S-phase formation processes simultaneously. These two processes are shown to have different kinetic rates, with the cluster-dissolution rate approximately double the S-phase formation rate. We identified a dissolution activation energy at (149.5 ± 14.6) kJ mol−1, which translates to (1.55 ± 0.15) eV/atom, as well as an activation energy for the formation of S precipitates at (129.2 ± 5.4) kJ mol−1, i.e. (1.33 ± 0.06) eV/atom. Importantly, the SAXS/WAXS results show the absence of an intermediate Guinier-Preston Bagaryatsky 2 (GPB2)/S″ phase in the samples under the experimental ageing conditions. These results are further validated by precipitation simulations that are based on Langer-Schwartz theory and a Kampmann-Wagner numerical method.

Effect of the B4C content and the milling time on the synthesis, consolidation and mechanical properties of AlCuMg-B4C nanocomposites synthesized by mechanical milling

In this study, AlCuMg-B4C nanocomposites reinforced with the B4C particles were produced using the mechanical milling and hot pressing method. The AlCuMg-B4C nanocomposite powders were milled for up to 25h and then hot pressed in vacuum at 560°C and 300MPa. The microstructure, density, hardness and tensile strength of the AlCuMg-B4C nanocomposites were investigated as a function of the milling time and the B4C content (wt%). The results show that the hot pressed density of the AlCuMg-B4C nanocomposites decreased with increasing B4C content and increasing milling time. The unreinforced AlCuMg alloy showed a high relative density of 99.2%, which is much higher density than that of the AlCuMg-15wt% B4C nanocomposites produced with a milling time of 25h. The hardness of the hot pressed nanocomposites was significantly higher than that of the hot pressed nanocomposites produced by using the conventional powder metallurgy. AlCuMg-10wt% of B4C nanocomposites produced with milling time of 6h exhibited the highest tensile strength of 332MPa.

Impact of different alloying additives and pre‐treatments on the anodising behaviour of AA2007

Most of the common alloying additives in wrought aluminium alloys have a strong impact on the anodising process and the aluminium oxide surface layer produced. Depending on their concentration, appearance in the aluminium matrix and electrochemical behaviour, they lead to different colouring and optical appearance of the aluminium oxide, respectively. These elements could also have an impact on the layer thickness and affect their regularity of them. In most cases, the influence of corrosion resistance and surface hardness is unavoidable. Therefore, the aim of this work is to analyse and illustrate the impact of different aluminium grain refiners (like TiB2 and Zr) and chip breaking additives (like Bi, Sn and Pb) on the anodising behaviour of AA2007 aluminium. Hence, several AlCuMg alloys with varied amount of these substitutes were produced and heat treated. To avoid and discover interdependencies of alloying elements, materials with only one alloying element (like Al‐1%Ti) were also produced. Additionally, different chemical and mechanical pre‐treatments were compared. Variations in current densities during the anodising processes completed the investigation. In the experimental part, the different materials were mechanically (e.g. turning, milling and polishing) and chemically pre‐treated (in NaOH and/or HNO3), anodised in sulphuric acid and hot sealed in a pilot plant. After the whole anodising process, cross‐section preparations in combination with scanning electron microscopy/energy dispersive X‐ray spectroscopy analysis helped to investigate the impact of single alloying additives, reflect the effects of different pre‐treatments and show the results of variation in anodising conditions. Copyright © 2016 John Wiley & Sons, Ltd.

The competition between metastable and equilibrium S (Al2CuMg) phase during the decomposition of Al[sbnd]Cu[sbnd]Mg alloys

The decomposition sequence of the supersaturated solid solution leading to the formation of the equilibrium S (Al2CuMg) phase in AlCuMg alloys has long been the subject of ambiguity and debate. Recent high-resolution synchrotron powder diffraction experiments have shown that the decomposition sequence does involve a metastable variant of the S phase (denoted S1), which has lattice parameters that are distinctly different to those of the equilibrium S phase (denoted S2). In this paper, the difference between these two phases is resolved using high-resolution synchrotron and neutron powder diffraction and atom probe tomography, and the transformation from S1 to S2 is characterised in detail by in situ synchrotron powder diffraction. The results of these experiments confirm that there are no significant differences between the crystal structures of S1 and S2, however, the powder diffraction and atom probe measurements both indicate that the S1 phase forms with a slight deficiency in Cu. The in situ isothermal aging experiments show that S1 forms rapidly, reaching its maximum concentration in only a few minutes at high temperatures, while complete conversion to the S2 phase can take thousands of hours at low temperature. The kinetics of S phase precipitation have been quantitatively analysed for the first time and it is shown that S1 phase forms with an average activation energy of 75kJ/mol, which is much lower than the activation energy for Cu and Mg diffusion in an Al matrix (136kJ/mol and 131kJ/mol, respectively). The mechanism of the replacement of S1 with the equilibrium S2 phase is discussed.

Artificial neural network to predict the effect of heat treatment, reinforcement size, and volume fraction on AlCuMg alloy matrix composite properties fabricated by stir casting method

The first goal of this study is to investigate the effect of T6 heat treatment and reinforcement properties on the mechanical properties of AlCuMg alloy matrix composites fabricated by the stir casting technique. The second goal of the study is to develop a prediction model which can predict experimental results with minimum error. For modeling and prediction of hardness, tensile strength, yield strength, and modulus of elasticity, a forward and backward feed propagation multilayer artificial neural network was developed to evaluate and compare the experimental calculated data to predict values. It was found that heat treatment and reinforcement properties have significant effects on the mechanical properties of AlCuMg alloy matrix composites. The prediction model, which has a mean absolute percentage error of approximately 2 % for the predicted values, can effectively predict the effect of the T6 heat treatment and reinforcement properties on the mechanical properties of AlCuMg alloy matrix composites.

Effect of Thermo-Mechanical Treatment on Mechanical Properties of AlCuMg Alloys

Technology development and new grades of alloys creation put before construction materials the number of requirements in range of durability and reliability of created constructions. Receivers expect materials with high strength properties, low production cost of the finished product, availability, corrosion resistance and low specific gravity. So the specific needs of customers mean that studies are constantly associated with the exploration of new materials and technologies that could meet made requirements [1,2,. In large scale this demand is met through the use of non-ferrous metals and their alloys. Selection of appropriate manufacturing techniques and the use of heat treatment procedures allow to obtain materials with better mechanical properties. Here the leading role has the aluminium and its alloys. Due to specific mechanical properties aluminium based materials are used in almost each field of industry. In aircraft industry they are used for the manufacture of fuselage elements in automobile industry the light alloys are used to make cylinder blocks, and other elements of internal combustion engines. In the construction industry they are used to manufacture windows and doors, as well as beautiful self-supporting lightweight facades. While the aluminium alloy products such as films or cans are also used in the food industry. The combination of physico-chemical and mechanical properties of aluminium alloys makes them the optimal solution for innovative design, thanks to them engineers can provide high strength associated with very low gravity. This allows to minimize the costs of subsequent use of the product, and while achieving good strength parameters. As part of this work the analysis of strain rate and temperature impact on mechanical properties of the tested alloy will be carried out. The experimental studies conducted in the temperature range of recrystallization (test temperature: 400°C, 450°C, 480°C, 500°C) using two strain rates 1 s-1and 0,1 s-1. This paper present the analysis of the application of high-temperature deformation changes in structure mainly caused by the dynamic recrystallization processes, which determine the optimal parameters of AlCuMg deformation process [. The proposed methodology of the research work made it possible to determine the effect of temperature-velocity parameters to changes in mechanical properties (inter alia: microhardness measurements) and changes in the structure of the material, which are closely related to the level achieved in mechanical properties.