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Affiliation of Author(s):材料科学与技术学院

Title of Paper:Microstructure and mechanical properties of the MLMPW on Invar alloy

Journal:Mater. Res. Express

Abstract:The Multi-layer and Multi-pass Welding (MLMPW) is employed in joining 19.05mmthick Invar alloy plates. The microstructure and mechanical properties of the welded joint are investigated. It is revealed that a perfect joint can be obtained with appropriate welding parameters and the proper cleaning before welding. Tensile specimens indicate a fracture pattern of ductile fracture. The fracture surface of the specimens are consisted of equiaxed dimples. Besides, the tensile strength of weld bead reaches more than 80% of the base metal. The microhardness of the heat affected zone is lower than that of the base metal. ©2019 IOP Publishing Ltd.

Translation or Not:no

Date of Publication:2019-01-01

Co-author:凌万里,高奇玉,颜廷艳,Liu Zili

Correspondence Author:Xiaohong Zhan