Alloy design for laser powder bed fusion additive manufacturing: a critical review

Abstract

Highlights Process features and typical defects of L-PBF are summarized. Printability of Fe-based, Ni-based, Al-based and Ti-based alloys is summarized and discussed. The application of weldability criteria in assessing printability during L-PBF for each alloy is evaluated. Strategies used in alloy design for L-PBF are summarized and categorized into crack mitigation-oriented, microstructure manipulation-oriented and machine learning-assisted approaches.