Effect Of Solution Temperature Research Articles

Effects of Solution Temperature on Tensile Properties of a High γ' Volume Fraction P/M Superalloy.

To meet the pressing needs concerning the optimization of the performance of powder metallurgy (P/M) superalloys for turbine disc applications, the effects of solution temperature on a novel high γ′ volume fraction P/M superalloy FGH 4107 were investigated. The results indicated that the size of the γ′ precipitates decreased dramatically as the solution temperature increased from 1160 to 1200 °C. Theoretical calculations showed that the precipitation strengthening played a dominant role in enhancing the strength of the high γ′ volume fraction P/M superalloy, and a higher solution temperature was beneficial for the modification of the γ′ phase distribution during the following cooling and aging process.

Effect of Solution Temperature on Microstructure and Properties of Thixotropic Back-Extruded Tin-Bronze Shaft Sleeve.

To study the heat-treatment process of a semi-solid copper alloy, a thixotropic back-extruded tin–bronze shaft sleeve was heat-treated at 630 °C, 660 °C, 690 °C and 720 °C for 1 h, respectively. Microstructure changes and mechanical properties under different solution temperatures of shaft sleeve were characterized using a metallographic microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), hardness tester, and tensile tester. The results show that the tensile strength first increases and then decreases; the elongation decreases; and the Brinell hardness increases gradually with increasing solution temperature. When the solution treatment is at 690 °C, the tin–bronze shaft sleeve’s microstructure and comprehensive mechanical properties are the best. The shape factor is 0.75, the average grain size is 82.52 μm, the Brinell hardness is 122 HBW, the tensile strength is 437 MPa, and the elongation is 17.4%, which is 3.4 times higher than that before solution treatment.

Effect of Solution Temperature on Electrodeposition Behavior of Zn–Ni Alloy from Alkaline Zincate Solution

Effect of Solution Temperature on Electrodeposition Behavior of Zn–Ni Alloy from Alkaline Zincate Solution

The effect of solution temperature on the quantitative analysis of laser-induced breakdown spectroscopy

The effect of solution temperature on the quantitative analysis of laser-induced breakdown spectroscopy

Effect of solution temperature on microstructure and mechanical properties of selective laser melted Fe–22Cr–5Ni-0.26N duplex stainless steel

Selective Laser Melting (SLM) technology is effective for fabricating complex shape parts with superior strength and ductility. However, the high-temperature gradient and rapid solidification rate in the SLM process led to unstable material microstructure, which indicated an excellent strength and poor elongation of the SLM specimen. In order to achieve outstanding strength-plasticity matching, the influences of different solution temperatures (1000 °C, 1100 °C, and 1200 °C) on the evolution of phase and microstructure of Fe–22Cr–5Ni-0.26 N duplex stainless steel (DSS) fabricated by SLM were investigated. The results were then used to clarify the corresponding variations in mechanical properties of the specimens under tensile loading. The results revealed that the AS-SLM specimen showed high yield strength and poor elongation which was 1162.52 MPa and 4.97%. Solution treatment at 1000 °C can increase the elongation from 4.97% to 29.21% due to the two-phase structures recovered, grains refined, as well as eliminate dislocation and residual stress through recrystallization. As the temperature rose, the yield strength declined, while elongation remained almost unchanged. Except for elongation, the tensile strength, yield strength, and hardness were all higher than those of forged specimens. Therefore, solution treatment is an efficient strategy to improve the mechanical properties of the SLMFe-22Cr–5Ni-0.26 N DSS with excellent yield strength and plasticity.

Effect of Solution Temperatures on Electrochemical Behavior of Aluminum Alloys and Carbon Steel in 20 Mass％ NaCl Solutions

Effect of Solution Temperatures on Electrochemical Behavior of Aluminum Alloys and Carbon Steel in 20 Mass％ NaCl Solutions

Effect of Solution Temperature on Microstructure and Properties of Mg-2Zn-0.5Zr-1.5Dy Alloy

The purpose of this paper is to investigate the effect of solution temperature on the microstructure and properties of Mg-2Zn-0.5Zr-1.5Dy alloy was studied by optical microscopy (OM), immersion experiment and electrochemical experiment. The results show that the alloy has the best comprehensive properties when the solution temperature is 470°C. The minimum average grain size was 97 μm. The Icorr and Eb of as-cast alloy are-3.55 μA/cm2 and-1.27 V, respectively, according to polarization curve fitting. With the increase of solution temperature, the value of Icorr first decreases and then increases, and Eb first increases and then decreases. After solution treatment at 470°C, Icorr and Eb are 1.41 μA/cm2 and-1.14 V, respectively.

Microstructure evolution of TRIP-assisted lean duplex stainless steel 2101 during in-situ tensile test after a thermomechanical treatment

A thermomechanical treatment process which can regulate the lamellar structure of duplex stainless steel into equiaxed austenite and ferrite matrix is proposed in this paper. The effects of solution temperatures on the microstructure and mechanical properties as well as the plastic deformation behavior of LDSS 2101 during tension are investigated using in-situ electron back-scattered diffraction (EBSD). The results indicate that the optimum temperature range for secondary solid solution is 1000–1050 °C. Strain induced martensite transformation (SIMT) occurs in the metastable austenite during the deformation, following two typical sequences of γ → α′ and γ→ ε → α′. Meanwhile, numerous deformation nano-twins are observed in the austenite, acting as strong obstacles to dislocation glide. Furthermore, α′-martensite nucleates preferentially at the large angle grain boundaries (HAGBs) between austenite grains as well as the intersection of annealing twin boundaries (TBs) and grain boundaries (GBs), growing rapidly along annealing TBs, GBs and slip bands. However, ε-martensite nucleates not only at the intersection of slip bands, but also inside the slip bands within the austenite. A high Schmid factor of 0.47 is necessary for γ→ε transformation to supply the driving force demand. Moreover, the ε→α′ transformation occurs dominantly after strain ε = 0.3.

Effect of Solution Temperature on Microstructure and Mechanical Properties of Ti–5Al5Mo5V3Cr1Zr Alloy

The work aims to reveal relationship between solution temperature, microstructure, and mechanical properties of Ti–5Al5Mo5V3Cr1Zr (Ti‐55 531) alloy. The alloys are prepared via solution processing in a temperature ranging from T β − 100 °C (where T β is β‐transus temperature) to T β + 100 °C for 2 h; and then air cooled, aged at 600 °C for 6 h, and air cooled again. Results indicate that solution temperature range (from T β − 100 °C to T β + 100 °C) can be divided into following five ranges according to performance of Ti‐55 531 alloy. The alloy presents excellent mechanical performance combining high strength and good ductility for solution temperatures ranging from T β − 50 °C to T β − 30 °C and from T β + 10 °C to T β + 30 °C. Interestingly, the Ti‐55 531 alloy exhibits a dramatically enhanced strength, while ductility drops rapidly as solution temperature exceeds T β + 70 °C. The enhanced strength's main reason is that grain boundary α phase changes from continuous to discontinuous with increasing solution temperature; nevertheless, the increased size of β grains results in a reduction in ductility. Thus, continuity of grain boundary α phase has a dramatical influence on performance of Ti‐55 531 alloy.

Effect of Solution Temperature on the Microstructure and Properties of 17-4PH High-Strength Steel Samples Formed by Selective Laser Melting

Samples of 17-4PH high-strength steel were processed by selective laser melting (SLM) and solution-processed. The effects of the solution temperature on the microstructure and mechanical properties of the samples were studied. The 17-4PH high-strength steel is primarily composed of martensite, with a small number of austenite phases, and contains many dislocations. After the solution treatment, the grain size gradually increased, yielding typical martensite. The samples were subjected to an aging treatment after the solution treatment. Precipitates formed in the samples, conducive to improving their strength and hardness. The Vickers hardening and wear properties of the 17-4PH high-strength steel samples first increased and then decreased with increasing solution temperature. After the solution treatment at 1040 °C for 2 h and aging at 480 °C for 4 h, the Vickers hardening of the 17-4PH high-strength steel increased to 392 HV0.5, and the friction coefficient was approximately 0.6. These values were, respectively, 7% and 5% higher than those for the untreated samples.

The effect of solution temperature on the precipitates evolution and aging hardening response of Al-15%Mg2Si(-1%Cu) alloys

The effect of solution temperature on the aging hardening behavior of Al-15%Mg2Si(-1%Cu) alloys was studied by characterizing the precipitation behaviors of nano-precipitates. After the solution temperature rises from 520 °C to 550 °C, more solute atoms are available for precipitation, and the formation activation energies of precipitates (β'' and S) decrease. So the formation of β''/β′ in Al-15%Mg2Si alloy and S in Al-15%Mg2Si-1%Cu alloy is accelerated at a solution temperature of 550 °C, which enhances the hardness and ultimate tensile strength (UTS) of the two alloys.

Effect of Solution Temperature on Microstructure and Mechanical Properties of Selective Laser Melted Fe-22cr-5ni-0.26n Duplex Stainless Steel

Effect of Solution Temperature on Microstructure and Mechanical Properties of Selective Laser Melted Fe-22cr-5ni-0.26n Duplex Stainless Steel

Effects of Solution Temperatures on the Microstructure and Properties of a Copper Alloy by Semisolid Back Extrusion

Effects of Solution Temperatures on the Microstructure and Properties of a Copper Alloy by Semisolid Back Extrusion

Effect of Solution Temperature on Microstructure and Properties of Thixotropic Back-Extruded Tin Bronze Shaft Sleeve

Effect of Solution Temperature on Microstructure and Properties of Thixotropic Back-Extruded Tin Bronze Shaft Sleeve

Effect of Solution Temperature on Electrodeposition Behavior of Zn-Ni Alloy from Alkaline Zincate Solution

Effect of Solution Temperature on Electrodeposition Behavior of Zn-Ni Alloy from Alkaline Zincate Solution

Optimization of a Solution Treatment in the Al-Cu-Mg-Ag Alloy via a Microstructural Investigation

We investigated the effect of solution temperature (Tsol. = 440–530 °C) on the mechanical properties of the Al–3.4Cu–0.34Mg–0.3Mn–0.17Ag alloy, finding that the investigated Al alloy showed the highest mechanical strength of σUTS = ~329 MPa at a Tsol. value of 470 °C. The microstructural investigation demonstrates that the mechanical properties for different Tsol. values stem from grain growth, precipitation hardening, and the formation of large particles at the grain boundaries. On the basis of Tsol. = 470 °C, the effect of each microstructural evolution is significantly different on the mechanical properties. In this study, the relationships between the microstructural evolution and the mechanical properties were investigated with respect to different values of Tsol.

Effects of Solution Temperature and Aging Time on the Microstructure and Mechanical Properties of TG6 Titanium Alloy

Effects of Solution Temperature and Aging Time on the Microstructure and Mechanical Properties of TG6 Titanium Alloy

Effect of Solution Temperature on Corrosion Behavior of 7050 Alloy after Heat Treatment in 3.5% NaCl Solution

Effect of Solution Temperature on Corrosion Behavior of 7050 Alloy after Heat Treatment in 3.5% NaCl Solution

Effect of Heat Treatment Process on Mechanical Properties and Microstructure of S280

The effect of solution temperature and aging temperature on mechanical properties and microstructure of the new ultrahigh strength stainless steel S280 was investigated by heat treatment process experiment. The results showed that the optimal heat treatment process was as follows: heating to 1080 °C，holding for a hour, and quenching in oil; cooling to -73 °C, holding for 2 hour, and warming in air to room temperature; heating to 540~550 °C, holding for 4 hour, and cooling in air. Choosing this heat treatment process, the steel can get good coordination between strength and toughness. Analyzed by HREM, the steel had desirable microstructures, which were fine lath martensite matrix with high density dislocation and finely dispersed precipitate strengthening phase, and film-like reversed austenite precipitated from the boundary of martensite.

Effects of solution temperatures on creep resistance in a powder metallurgy nickel-based superalloy

In this study, FGH96 superalloys with different microstructures were prepared via solution heat-treatment at different temperatures. Herein, creep tests were conducted on the resulting FGH96 alloys at 704 °C and 690 MPa, and the creep properties and microstructures of the samples were found to have a complex relationship. To understand the deformation mechanism of FGH96 alloys, the γ′ distribution, grain boundary morphology (including small-angle boundaries, large-angle boundaries, and Σ3 twin boundaries), and local misorientation during creep were analyzed using scanning electron microscopy, transmission electron microscopy, and electron backscattered diffraction, respectively. The results suggest that the main creep deformation mechanism in FGH96 superalloys is microtwinning. Furthermore, we investigated the interaction between Σ3 twin boundaries and microtwins and found that the Σ3 twin boundaries had a positive effect on the creep resistance. Based on the analysis of kernel-averaged misorientation and Schmid factors of the deformed grains, we found that the higher dislocation density around the small-angle boundaries was the main reason for the greater creep rate in the subsolvus superalloy. The effects of serrated grain boundaries and weight percent of the carbide were also studied to investigate the damping of creep properties in samples that are treated at temperatures of 1180 °C or higher. The overall creep resistance was determined by the frequency and density of small-angle boundaries, large-angle boundaries, and Σ3 twin boundaries.