金属加工（热加工）Issue(6)：65-71,7.
5083铝合金薄板CMT+P焊接接头组织与力学性能研究
Study on microstructure and mechanical properties of 5083 aluminum alloy sheet CMT+P welded joint
摘要
Abstract
Cold metal transfer-pulse welding(CMT+P)of 5083 aluminum alloy sheet was carried out in this paper.The microstructure and mechanical properties of welding joint were investigated using scanning electron microhardness,microhardness tester and tensile testing machine.The results show that the welding bead was well formed.The weld microstructure is as cast equiaxed dendrite,the heat affected zone microstructure is the mixed structure of processed fibers and local equiaxed grains and the base metal is still rolled fiber structure.Bone-like or block iron rich impurity phase AlFeMn were found in welded joints and heat-affected zones.Compared with the base metal structure,the grain size of the weld area is 46.31μm,and the proportion of large-angle grain boundaries is 16.43％.The hardness of the weld area is 77～81HV,and the tensile strength of the welded joint is 295MPa,which is 89.39％of that of base metal.Elongation after fracture reaches 15％,which is 75％of the base material.关键词
5083铝合金/CMT+P焊接/微观组织/力学性能Key words
5083 aluminum alloy/CMT+P welding/microstructure/mechanical property引用本文复制引用
王军亮,穆壮壮,郁炎,王硕,孙晓毅,武国举..5083铝合金薄板CMT+P焊接接头组织与力学性能研究[J].金属加工（热加工）,2025,(6):65-71,7.基金项目
国家重点研发计划项目(2021YFB3704205). （2021YFB3704205）
