LD10铝合金活性TIG焊接接头的组织与力学性能  

Microstructure and Mechanical Properties of Active TIG Welded Joint of LD10 Aluminum Alloy

作　　者：王健存 曲文卿[1] 牟国倩 庄鸿寿[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]北京飞宇微电子有限责任公司,北京100027

出　　处：《热加工工艺》2017年第1期81-83,87,共4页Hot Working Technology

摘　　要：采用活性TIG焊焊接LD10铝合金,对比三种不同焊接方式,观察金相组织,进行拉伸试验,分析了焊接接头的组织和性能。结果表明,活性剂在直流TIG焊接过程中能去除铝合金表面氧化膜,使直流正极性A-TIG焊得以实现。活性剂能改善焊接接头气孔现象,同时细化晶粒。活性焊接接头具有较高的拉伸强度。LD10 aluminum alloy was welded by using three different active TIG weldings. The microstructure and properties of the welded joints were studied by means of metallographie observation and tensile test. The results show that the active flux can remove oxidation film of the aluminum alloy in DC TIG welding, and the DC positive A-TIG welding is realized. The active flux can decrease pores and refine grain. The active flux can increase tensile strength of welded joints.

关 键 词：LD10 直流正极性A-TIG焊 活性剂 

分 类 号：TG406[金属学及工艺—焊接] TG444.7