Effect of Water Cooling on the Performances of Friction Stir Welding Heat-Affected Zone

被引：69

作者：

Zhang, H. J. ^{[1
]}

Liu, H. J. ^{[1
]}

Yu, L. ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2012年 / 21卷 / 07期

关键词：

aluminum; mechanical testing; welding; 6061-T6; ALUMINUM; ALLOY; TEMPERATURE; FRACTURE; STRENGTH; JOINTS; PLATE;

D O I：

10.1007/s11665-011-0060-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The heat-affected zone (HAZ) is generally the intrinsic weakest location of the normal friction stir welded precipitate hardened aluminum alloys. In order to improve the mechanical properties of the HAZ by controlling the temperature level, underwater friction stir welding (FSW) of an Al-Cu aluminum alloy was conducted in the present study. The results indicate that the hardness of the HAZ can be improved through underwater FSW. Microstructural analysis reveals that the hardness improvement is attributed to the lowering of precipitate coarsening level and the narrowing of precipitate free zone, which are essentially induced by the variations of welding thermal cycles under the cooling effect of water.

引用

页码：1182 / 1187

页数：6

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