Effect of rotational speed and feed rate on microstructure and mechanical properties of 6061 aluminum alloy manufactured by additive friction stir deposition

被引：24

作者：

Chen, Gang ^{[1
]}

Wu, Kai ^{[1
]}

Wang, Yu ^{[1
]}

Zhu, Zhixiong ^{[2
]}

Nie, Pan ^{[2
]}

Hu, Fengfeng ^{[2
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Peoples R China

[2] Aerosp Engn Equipment Suzhou Co Ltd, Suzhou 215200, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2023年 / 127卷 / 3-4期

关键词：

Additive friction stir deposition; 6061 aluminum alloy; Ultimate tensile strength; Grain size;

D O I：

10.1007/s00170-023-11527-6

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Additive friction stir deposition (AFSD) is attractive for its ability to create freeform and fully dense structures without melting and solidification. Hence, additive friction stir deposition is an alternative to fusion-based additive manufacturing technology. In this study, the influence of the AFSD parameter (i.e., rotational speed and feed rate) on the mechanical properties and microstructure of 6061 aluminum alloy is investigated. The as-deposited 6061 aluminum alloy exhibits a relatively homogeneous microstructure with extensive equiaxed grains. Compared to the feedstock material, the ultimate tensile strength of the as-deposited 6061 aluminum alloy decreased to 65% from 320 to 210 MPa. The results of electron backscatter diffraction indicate that continuous dynamic recrystallization occurs during the AFSD process. Furthermore, it is evidence that the grain size and ultimate tensile strength are positively correlated with feed rate and rotational speed, whereas the elongation at break decreases with the increase in feed rate and rotational speed.

引用

页码：1165 / 1176

页数：12

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