Research Progress on Residual Stress in Metal Component Manufactured by Selective Laser Melting

Residual stress is one of the key factors leading to the failure of metal components manufactured by selective laser melting (SLM). The generation mechanism and the testing methods of residual stress during SLM manufacturing are described; the influence of SLM process parameters on residual stress is summarized; the future direction of residual stress research of SLM manufactured components is prospected.