Investigation on Microstructure and Residual Stress Distribution in Dissimilar AA3105/AA2024 Friction Stir Joints

IF 2.2 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Engineering and Performance Pub Date : 2024-06-12 DOI:10.1007/s11665-024-09681-3

H. Kheirabadi, B. Beidokhti, S. Khadivi, A. Davodi

引用次数: 0

Abstract

The microstructure, mechanical properties and residual stress of dissimilar AA3105/ AA2024 friction stir welds have been investigated. The formation of voids was observed at high rotational speeds and low transverse speeds due to the high weld heat input and abnormal stirring. The precipitate fragmentation was noticeable at higher tool rotational speed. The highest hardness was obtained at the AA2024 side of the joints due to the presence of precipitates. The results showed that the welding transverse speed has more effect on UTS than the rotational speed. Tensile residual stresses were found at the AA2024-T6 side and the welding line; while residual stresses at the AA3105 side were compressive.

Abstract Image

查看原文本刊更多论文

对异种 AA3105/AA2024 摩擦搅拌接头微观结构和残余应力分布的研究

研究了异种 AA3105/ AA2024 搅拌摩擦焊缝的微观结构、机械性能和残余应力。由于高焊接热输入和非正常搅拌，在高转速和低横向速度下观察到空洞的形成。在工具转速较高时，析出物碎裂现象明显。由于析出物的存在，接头 AA2024 侧的硬度最高。结果表明，焊接横向速度比旋转速度对 UTS 的影响更大。在 AA2024-T6 侧和焊接线处发现了拉伸残余应力；而在 AA3105 侧则发现了压缩残余应力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Materials Engineering and Performance 工程技术-材料科学：综合

CiteScore

3.90

自引率

13.00%

发文量

1120

审稿时长

4.9 months

期刊介绍： ASM International''s Journal of Materials Engineering and Performance focuses on solving day-to-day engineering challenges, particularly those involving components for larger systems. The journal presents a clear understanding of relationships between materials selection, processing, applications and performance. The Journal of Materials Engineering covers all aspects of materials selection, design, processing, characterization and evaluation, including how to improve materials properties through processes and process control of casting, forming, heat treating, surface modification and coating, and fabrication. Testing and characterization (including mechanical and physical tests, NDE, metallography, failure analysis, corrosion resistance, chemical analysis, surface characterization, and microanalysis of surfaces, features and fractures), and industrial performance measurement are also covered