Shape recovery performance of a (V, C)-containing Fe–Mn–Si–Ni–Cr shape memory alloy fabricated by laser powder bed fusion

• DOI: 10.1016/j.jmrt.2022.08.143
• Publication Date: 2022-09-05T07:19:45Z
• Authors: I. Ferretto; D. Kim; M. Mohri; E. Ghafoori; W.J. Lee; C. Leinenbach
• Keywords: Elasticity

In the present work, a Fe–Mn–Si shape memory alloy containing V and C has been fabricated by laser powder bed fusion for first time. A pronounced pseudo-elasticity compared to similar but conventionally manufactured is achieved after aging treatment, as result of fine microstructure developed during process evaporation Mn. The formation high precipitate densities also responsible improved thermo-mechanical properties. size density precipitates significantly vary with conditions account important variation in material's performance. maximum observed samples aged at 750 °C 6 h. recovery strain upon unloading exceeds values more than 50%.