State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China<&wdkj&>Institute of Metals, College of Materials Science and Engineering, Changsha University of Science & Technology, Changsha 410004, China
Natural Science Foundation of China [52271046]; Natural Science Foundation of Hunan Province, China [2022JJ20061]; State Key Laboratory of Powder Metallurgy, Central South University; Hunan Young Scientific Innovative Talents Program [2020RC3040]; Outstanding Youth Fund of Hunan Natural Science Foundation
机构署名：
本校为其他机构
院系归属：
材料科学与工程学院
摘要：
In this study, the intrinsic heterogeneous grain structure derived from the special temperature gradient in additive manufacturing and the intragranular precipitation were utilized for constructing a high-strength Al-Mg-Sc-Zr alloy. The alternative distribution of the coarse-grained (CG) layer in the middle of the molten pool and ultrafine-grained (UFG) layer at the boundary between the adjacent two molten pools were produced by using laser powder bed fusion (L-PBF) technology. High contents of Sc and Zr elements were introduced into the Al-Mg alloy, which contributed to the stabilization of U...
