Heat Treatment Effects on Wire and Arc Additive Manufactured ER308L Components
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Abstract
The development of numerous techniques and technologies for adding materials has led to the rise in popularity of additive manufacturing techniques over the past two decades. Wire and Arc Additive Manufacturing (WAAM) is one of these Additive Manufacturing processes that gained its importance for manufacturing metal components on a large scale with high quality. The enhancements in surface quality, mechanical properties and step-down of the residual stresses are critical for the WAAM process. During the WAAM process, excessive heat accumulation can inhibit the bead's exact control and lead to mechanical properties and microstructure differences. Hence, heat treatment is essential to achieve isotropic properties. In the present work, SS-308L is used as wire material and components are deposited using WAAM. These specimens are subjected to various heat treatment processes and the surface roughness, hardness tests are done according to ASTM standards.
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