电焊机2023，Vol.53Issue(12)：95-100,6.DOI:10.7512/j.issn.1001-2303.2023.12.15
不同气氛对2219铝合金TIG焊接头组织和性能的影响
Effect of Different Shielding Gases on the Microstructure and Properties of 2219 Aluminum Alloy TIG Welding Joint
杨康 1唐瑜 1汪鹏举 1林鹏 1张志伟 1李乔 1喻宽 1邹金才1
作者信息
- 1. 四川航天长征装备有限公司,四川 成都 610100
- 折叠
摘要
Abstract
In the paper,as the object,15 mm thick 2219 Aluminum alloy are welded by TIG with helium and argon protect-ing respectively,and the effect of different processes on the structure and performance of the joints are analyzed.The results show that:compared with joints welded with argon protected,the joints welded with helium protected have a larger hardness in the over-aging zone,due to the larger single-time heat input in the bottom layer.The α grains in the weld area grow,and the θ-phase increase,which increases the hardness and tensile strength of the joint,but the elongation decreases significantly.Appropriate welding speed and current can refine the crystal grains and inhibit the precipitation of the second term at the joint,thereby improving the mechanical properties of the joint.关键词
保护气体/2219铝合金/TIG焊/接头组织/力学性能Key words
shielding gases/2219 Aluminum Alloy/TIG Welding/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
杨康,唐瑜,汪鹏举,林鹏,张志伟,李乔,喻宽,邹金才..不同气氛对2219铝合金TIG焊接头组织和性能的影响[J].电焊机,2023,53(12):95-100,6.
