Comparative analysis of Mechanical properties, microstructures of Ti۶Al۴V parts manufactured by Electron Beam Welding and Selective Laser Melting

Finding a suitable manufacturing process has a crucial role in determining the mechanical properties and performance of titanium alloy components. This review paper propounds a comparative analysis of two prevalent manufacturing processes, Laser Beam Welding (LBW) and Selective Laser Melting (SLM), for Ti۶Al۴V alloy in terms of mechanical properties, microstructure and strength. LBW involves the fusion of material through laser heating, resulting in welded joints. SLM, on the other hand, utilizes a layer-by-layer melting and solidification process to directly fabricate components. Both processes were evaluated based on their impact on the Ti۶Al۴V material properties.In terms of mechanical properties, SLM-produced Ti۶Al۴V parts exhibited high strength rather than LBW due to the fine and dense microstructure achieved. Microstructural analysis revealed that SLM enabled the production of controlled and refined microstructures, while LBW resulted in coarser grain structures. Regarding strength, SLM parts approached or even exceeded the strength of conventionally manufactured Ti۶Al۴V components due to their fine microstructure and absence of weld interfaces. Overall, this comparative and review study has provided valuable vision into the mechanical properties, microstructure and strength of Ti۶Al۴V components produced using LBW and SLM processes based on several investigations which have been performed before to offer a way to opt for an applicable manufacturing process based on specific application requirements such as strength, ductility.

کلیدواژه ها:

“Selective Laser Melting(SLM)” ، “Laser Beam Welding(LBW)” ، “Ti۶AL۴V” ، “Microstructure” ، “Mechanial properties” ، “Additive Manufacturing