Microstructures and mechanical properties of micro friction stir welding (μFSW) of 6061-T4 aluminum alloy

被引：40

作者：

Huang, Yongxian ^{[1
]}

Meng, Xiangchen ^{[1
]}

Lva, Zongliang ^{[1
]}

Huang, Tifang ^{[1
]}

Zhang, Yabin ^{[1
]}

Cao, Jian ^{[1
]}

Zhou, Li ^{[2
]}

Feng, Jicai ^{[1
]}

机构：

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

[2] Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai 264209, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2019年 / 8卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Micro friction stir welding; Ultra-thin sheet; 6061-T4; alloy; Microstructure; Mechanical property;

D O I：

10.1016/j.jmrt.2017.10.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Micro friction stir welding (mu FSW) was successfully performed to join the ultra-thin 6061-T4 sheet with the thickness of 0.5 mm. The optimum plunging depth of 0.05 mm was obtained and reduction ratio was lower than 0.2%. Based on better dynamic flow induced by the triflat pin, the good surface appearance at the wider process window was obtained, while the grain size at the nugget zone was finer than that by the taper pin. Increasing welding speed caused that tensile property increased firstly and then decreased with high welding speed than 500 mm/min. The maximum values of tensile strength and elongation of the ir,FSW joint using the triflat pin reached 220.3 MPa and 11.7%, which were 91.9% and 54.4% of base material, respectively. (C) 2018 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda.

引用

页码：1084 / 1091

页数：8

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