文献类型：期刊文献

英文题名：Additively manufactured Ni-15Fe-5Mo Permalloy via selective laser melting and subsequent annealing for magnetic-shielding structures: Process, microstructural and soft-magnetic characteristics

作者：Li, Bo[1];Fu, Wangqi[1];Xu, Haisheng[2];Qian, Bo[1];Xuan, Fuzhen[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Addit Mfg & Intelligent Equipment Res Inst, Shanghai 200237, Peoples R China;[2]Hubei Sanjiang Space Jiangbei Machinery Engn Co L, Xiaogan 432000, Peoples R China;[3]East China Univ Sci & Technol, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China

年份：2020

卷号：494

外文期刊名：JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

收录：;EI(收录号：20193607405102);WOS:【SCI-EXPANDED(收录号:WOS:000488040000003)】；

基金：The authors gratefully acknowledge the support by International Collaboration Program of Science and Technology Commission of Shanghai Municipality, China (No. 19110712500) and National Natural Science Foundation of China (No. 51505293).

语种：英文

外文关键词：Additive manufacturing; Selective laser melting; Soft magnetic materials; Permalloy; Magnetic anisotropy; Hierarchical microstructure

摘要：Selective laser melting (SLM) and subsequently recrystallization annealing was employed to additively manufacture Ni-15Fe-5Mo Permalloy magnetic shielding structures for applications. The experimental works of SLM process optimization were completed to obtain the tailored parameters for acquiring samples with a high relative bulk density of 99.86% and a relatively low surface roughness. The hierarchical and anisotropic microstructure characteristics and their effects on the mechanical and soft magnetic properties of SLM-printed and subsequently annealed samples were focused on to explain some mechanism issues in terms of the comparisons on those before and after the anneal. The recrystallization annealing did not significantly alter the preferred orientations of the crystallographic textures. The SLM-printed microstructural evolution, including residual-stress relief, grain boundary density variation, elimination of cellular substructural walls, and composition re-homogenization, contributed to the promotion of the synthetical magnetic characteristics in the Ni-15Fe-5Mo Permalloy. The anisotropy characteristic of as-printed and subsequently annealed microstructures induced the typical phenomenon of magnetic anisotropy exhibiting when the magnetic induction was changed corresponding to the SLM building direction.