Fatigue Behaviour of 7N01-T4 Aluminium Alloy Welded by Ultrasonic-Assisted Friction Stir Welding
文献类型：期刊论文
| 作者 | Zhang, Zhiqiang; He, Changshu; Li, Ying; Wei, Jingxun; Zhai, Menggang; Zhao, Su; Zhao, Xiang |
| 刊名 | MATERIALS
 |
| 出版日期 | 2020 |
| 卷号 | 13期号:20 |
| 关键词 | MATERIAL-FLOW BEHAVIOR MECHANICAL-PROPERTIES RESIDUAL-STRESSES KISSING BOND VIBRATION MICROSTRUCTURE STRENGTH JOINTS TOOL EVOLUTION |
| DOI | 10.3390/ma13204582 |
| 英文摘要 | This study investigates the effects of axial ultrasonic vibration on the microstructure evolution, residual stresses distribution and fatigue fracture behaviour of a 7N01-T4 joint, and demonstrates that ultrasonic vibration can significantly promote the flow of plasticised metals, expand the stirred zone (SZ) width and refine the grain size. The longitudinal residual stresses of the joints are dominant, and the peak longitudinal residual stresses of the thermo-mechanically affected zone (TMAZ) on the advancing side (AS) (TMAZ-AS) in the ultrasonic-assisted friction stir welding (UAFSW) joint are 31.5 MPa lower than those in the friction stir welding (FSW) joint. Compared to that of FSW joints, the fatigue strength of UAFSW joints increases by 20 MPa at 10(7) cycles (stress ratio of R = 0.1). At high-stress levels, crack initiation occurs at the TMAZ-AS, and is mainly attributed to high residual stresses and second-phase particles. At low-stress levels, fatigue cracks are likely to initiate in the transition zone (TZ). |
| 学科主题 | Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20441]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.He, CS (corresponding author), Northeastern Univ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Peoples R China. 2.He, CS (corresponding author), Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, Zhiqiang,He, Changshu,Li, Ying,et al. Fatigue Behaviour of 7N01-T4 Aluminium Alloy Welded by Ultrasonic-Assisted Friction Stir Welding[J]. MATERIALS,2020,13(20). |
| APA | Zhang, Zhiqiang.,He, Changshu.,Li, Ying.,Wei, Jingxun.,Zhai, Menggang.,...&Zhao, Xiang.(2020).Fatigue Behaviour of 7N01-T4 Aluminium Alloy Welded by Ultrasonic-Assisted Friction Stir Welding.MATERIALS,13(20). |
| MLA | Zhang, Zhiqiang,et al."Fatigue Behaviour of 7N01-T4 Aluminium Alloy Welded by Ultrasonic-Assisted Friction Stir Welding".MATERIALS 13.20(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。