Abstract
Laser surface alloying is one of the recent technologies used in the manufacturing sector for improving the surface properties of metals. Aluminum alloys are key materials in the manufacturing sector. This favors their high demand in many industries. In this study investigation, the surface alloying of pure aluminum was conducted using a CO2 laser. Four types of alloying powders were used with a 2:1:1 combination of copper, magnesium, and manganese. The hardness of the alloyed zones of Al-CuMgMn increased by 2 to 7 times at a 1.7 kW processing laser power. To assess the rate of wear for the alloyed samples, a modified Lancaster wear coefficient was considered. When the pin-on-disc wear test at 10 N and 20 N loads was analyzed with different sliding speeds, a reduction in wear by 30–50% appeared due to surface alloying. The result shows good insight into the wear behavior. In the same way, microstructure and surface morphology studies displayed a good metallurgical bonding without defects. In a statistical sense, the friction and wear behavior matched with an asperity-based model. The experimental results revealed that laser surface alloy has more wear resistance.
Highlights
By 12%, the depth of alloying was increased by 15.6%. This shows that the heat generated from laser power has an effect on the mechanical properties such as hardness and wear resistances, which are discussed in other sections
Concentration of alloying elements are less.ofAccordingly, concentration alloying reduced elements by 35-38 from 1700 to 1900 W, the micro-hardness laser surface alloyed of samples, intermetallic formation and element segregation can be enhances the Energy Dispersive X-ray Spectroscopy (EDS) spectrums of Al-CuMgMn
When 12% of the laser power increased from 1700 W to 1900 W, the micro-hardness of the laser-surfacealloyed samples reduced by 35–38%
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. The formation of metallurgical bonding of added materials with aluminum substrate through laser played a significant role in proving surface properties such as microhardness, wear, and corrosion resistance [5,7]. One of the primary methods for obtaining materials with better mechanical properties is surface treatment technology Among these processes is laser surface alloying, which can lead to obtaining good wear resistance on aluminum substrate [8,9,10]. CO2 , Nd:YAG, excimer, and diode lasers are mainly applied [14,15,16] Take into account these methods, several researchers have attempted to employ laser surface alloying as well as dispersing in aluminum substrate. The result allows us to study the behavior of the aluminum alloyed material in depth and better understand the complexity of wear resistance and metallurgical phenomena
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
