Impact Toughness of As‐Built and Heat‐Treated Near‐β Ti–5Al–5Mo–5V–3Cr–1Zr Alloys Fabricated by Selective Laser Melting and Electron Beam Melting

Herein, the effects of heat treatment on the microstructure evolution and impact toughness of selective laser‐melted (SLM) and electron beam‐melted (EBM) near‐β Ti–5Al–5Mo–5V–3Cr–1Zr (Ti55531) alloy specimens are systematically investigated. As fabricated SLM and EBM Ti55531 alloys contain metastable β and α + β microstructure, respectively. The metastable β microstructure of SLM‐fabricated Ti55531 is transformed to bilamellar, lamellar, and...