State Key Laboratory of Solidification Processing;
Northwestern Polytechnical University;
Xi'an 710072;
China;
Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design;
MIIT China;
Northwestern Polytechnical University;
Xi'an 710072;
China;
Al-Mg-Sc-Zr alloys; Additive manufacturing; Directed energy deposition; Columnar-to-equiaxed transition; Phase precipitation;