Process Parameter and Dimension-Dependent Mn Vaporization During Laser Powder Bed Fusion of an Fe–Mi–Si–Cr-Based Shape Memory Alloy

Abstract

Shape Memory Alloys

In article number 2500327, Anastasiya Toenjes and Maylin Homfeldt investigate laser-induced compositional grading due to Mn vaporization during PBF-LB/M of a Fe–Mi–Si–Cr-based shape memory alloy. This vaporization can deplete the stabilizing element enough to trigger a phase transformation, leading to cracking. The cover sample shows a tree-like crack pattern, with EBSD data mapping the transformation like a tree crown.