Effect of Tool Pin Eccentricity on the Microstructure and Mechanical Properties of Friction Stir Processed Al-6061 Alloy

被引：6

作者：

Chen, Yu ^{[1
]}

Wang, He ^{[2
]}

Ding, Hua ^{[2
]}

Zhao, Jingwei ^{[3
]}

Zhang, Fenghe ^{[1
]}

Ren, Zhaohui ^{[1
]}

机构：

[1] Northeastern Univ, Sch Mech Engn & Automat, Shenyang 110819, Liaoning, Peoples R China

[2] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China

[3] Univ Wollongong, Sch Mech Mat Mechaton & Biomed Engn, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2019年 / 28卷 / 05期

基金：

美国国家科学基金会;

关键词：

aluminum alloy; friction stir processing; mechanical properties; microstructure; pin eccentricity; PARAMETERS; PROFILE; ZONE; HARDNESS; COPPER;

D O I：

10.1007/s11665-019-04025-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three different stir tools with the pin eccentricity of 0, 0.4 and 0.8mm were applied to the friction stir processing (FSP) of Al-6061 alloy. Results show that the pin-affected zone (PAZ) enlarges and the grain size in the stir zone (SZ) decreases as the pin eccentricity increases. Moreover, the low peak FSP temperature induced by the pin eccentricity gives rise to the coarsening of strengthening precipitates in the SZ. Compared with the pin-eccentric FSP samples, the SZ produced without pin eccentricity exhibits the highest hardness and yield strength due to the high amount of fine precipitates. However, the application of pin eccentricity elevates the overall tensile properties of FSP samples through changing the failure location from heat-affected zone (HAZ) to SZ.

引用

页码：2845 / 2852

页数：8

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