Grain structure control of TC11 alloy in laser direct energy deposition by a static magnetic field

Abstract

This paper describes a novel in-situ adjustment method of static magnetic field (SMF) for laser additive manufacturing, which realizes the change of grain morphology and weave structure without changing the composition and performing post-processing. The TC11 alloy was prepared by laser direct energy deposition (LDED) under static SMF. The results show that a transverse static SMF of 0.5 T effectively suppresses the tendency of columnar crystals to grow continuously along the build direction and the dominant weaving direction of 〈0001〉 texture, and reduces the anisotropy of the TC11 alloy.