电焊机2018，Vol.48Issue(5)：76-79,4.DOI:10.7512/j.issn.1001-2303.2018.05.15
A6N01铝合金CMT焊接接头组织与性能研究
Research on the microstructure and property of CMT welded joint on A6N01 aluminum alloy
朱瑞栋 1马传平 2徐晓龙3
作者信息
- 1. 中车青岛四方机车车辆股份有限公司,山东青岛266111
- 2. 西南交通大学材料科学与工程学院,四川成都611031
- 3. 四川大西洋焊接材料股份有限公司,四川自贡643010
- 折叠
摘要
Abstract
The microstructure and mechanical properties of A6N01 aluminum alloy pulse cold metal transfer (P-CMT) welded joints are observed and analyzed by OM,microhardness and tensile testers.The results show that the weld of P-CMT welded joint is a typical dendritic crystal cast structure.The side of bond close to the weld is a columnar crystal structure,while the side close to the substrate is an equiaxed grain structure.The softening zone of heat affected zone about 10mm from the center of the weld.The average tensile strength of welded joints is 203 MPa,and the average elongation after fracture A60 is 11.09％.The weld zone and the softening zone of the HAZ are the weak links of the welded joint.关键词
A6N01铝合金/P-CMT焊接/微观组织/力学性能Key words
A6N01 aluminum alloy/pulse cold metal transfer welding/microstructure/mechanical property分类
矿业与冶金引用本文复制引用
朱瑞栋,马传平,徐晓龙..A6N01铝合金CMT焊接接头组织与性能研究[J].电焊机,2018,48(5):76-79,4.
