Mechanical properties of underwater friction stir welded 2219 aluminum alloy

来源期刊：中国有色金属学报(英文版)2010年第8期

论文作者：刘会杰 张会杰 黄永宪 于雷

文章页码：1387 - 1391

Key words：aluminum alloy; underwater friction stir welding; mechanical property

Abstract: Underwater friction stir welding of 2219 aluminum alloy was carried out in order to further improve the joint performances by varying welding temperature history. The results indicated that the tensile strength of the joint can be improved from 324 MPa by external water cooling action in normal to 341 MPa. However, the plasticity of the joint is deteriorated. The underwater joint tends to fracture at the interface between the weld nugget zone and the thermal mechanically affected zone on the advancing side during tensile test, which is significantly different from the normal joint.

基金信息：the National Key Technology Research and Development Program of China