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Affiliation of Author(s):材料科学与技术学院

Title of Paper:Microstructure and property characteristics of thick Invar alloy plate joints using weave bead welding

Journal:JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

Key Words:Invar alloy Weave bead welding Microstructure characteristic Thick plate

Abstract:Weave bead welding was employed to join Invar alloy plates. Excellent fusion formations were produced at the side walls of the groove and the inter-layers without any clearly observed defects, such as holes, inclusions or macro-cracks. Mn and Si are segregated in the base metal, while homogeneously distributed in the weld. The Ni content decreased while the Fe content increased in weld seam. All tensile specimens suffered a ductile fracture and the strength of the weld bead was as superior as base metal. The fracture surface was composed by equiaxed dimples. The micro-hardness of weld and metal in heat-affected zone was lower than that of base metal.(C) 2017 Elsevier B.V. All rights reserved.

ISSN No.:0924-0136

Translation or Not:no

Date of Publication:2017-06-01

Co-author:Liu, Xiangbo,Wei Yanhong,Chen, Jicheng,Chen, Jie,Liu, Hongbing

Correspondence Author:Xiaohong Zhan