文献类型：期刊文献

英文题名：General Investigations on Manufacturing Quality of Permalloy via Selective Laser Melting for 3D Printing of Customized Magnetic Shields

作者：Li, Bo[1];Zhang, Lei[1];Fu, Wangqi[1];Xu, Haisheng[2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Hubei Sanjiang Space Jiangbei Machinery Engn Co L, Xiaogan 432000, Peoples R China

年份：2020

卷号：72

期号：8

起止页码：2834

外文期刊名：JOM

收录：;EI(收录号：20200207995731);WOS:【SCI-EXPANDED(收录号:WOS:000554771700008)】；

语种：英文

外文关键词：Magnetism - Ternary alloys - Nickel alloys - Selective laser melting - Surface roughness - Gyroscopes - Iron alloys

摘要：Selective laser melting (SLM)-assisted 3D printing was employed to directly fabricate Ni-Fe-based permalloy magnetic shields of fiber optic gyroscopes in spacecraft. Process optimization was conducted for the quantitative analyses of the influences of laser processing parameters on the bulk density and surface roughness of the as-printed parts. It contributed to the determination of the suitable SLM process conditions to improve the as-printed quality and further explore the formation mechanisms of Ni-Fe-Mo soft magnets. The SLM-generated microstructures with hierarchical characteristics, involving molten pools or tracks, austenite grains and cellular substructures, were dissected before and after the recrystallization annealing treatment. The soft magnetic properties of as-printed permalloy Ni-15Fe-5Mo with and in the absence of the annealing were comparatively evaluated, proving to be comparable to those of the conventionally processed permalloy parts. The lightweight magnetic shields were 3D-printed, showing the feasibility and applicability of SLM.