Fusion boundary microstructure evolution and mechanical properties of cold metal transfer welded dissimilar A5754 and A5083 joint

被引：16

作者：

Rajeshkumar, R. ^{[1
]}

Niranjani, V. L. ^{[2
]}

Devakumaran, K. ^{[3
]}

Banerjee, Kumkum ^{[1
]}

机构：

[1] Natl Inst Technol Karnataka, Surathkal, India

[2] Def Met Res Lab, Hyderabad, Telangana, India

[3] BHEL Corp, Welding Res Inst, Trichy, India

来源：

MATERIALS LETTERS | 2021年 / 284卷

关键词：

Welding; Interfaces; Microstructure; Mechanical properties;

D O I：

10.1016/j.matlet.2020.128877

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fusion boundary microstructure evolution and its effect on tensile properties of cold metal transfer (CMT) welded joint of dissimilar A5754 and A5083 is studied. Non-dendritic equiaxed fine zone (EQZ) is newly evolved and located between PMZ and weld metal zone (WMZ). The Si films are distributed as continuous layers at grain boundaries (GBs) of EQZ, these films are comparatively less and are distributed in a non continuous manner at GBs of partially melted zone (PMZ). EQZ of A5083 side exhibits finer grains than A5754 side. The narrower EQZ width, finer grains at EQZ, finer dendrites at WMZ interface and larger distribution of secondary phase particles at PMZ and heat affected zone (HAZ) increase strength of A5083 side. (c) 2020 Elsevier B.V. All rights reserved.

引用

页数：3

共 10 条

[1] An investigation on the dissimilar friction stir welding of T-joints between AA5754 aluminum alloy and poly(methyl methacrylate) [J].