Inhibiting weld cracking in high-strength aluminium alloys
文献类型：期刊论文
| 作者 | Hu, Yanan; Wu, Shengchuan; Guo, Yi; Shen, Zhao; Korsunsky, Alexander M.; Yu, Yukuang; Zhang, Xu; Fu, Yanan; Che, Zhigang; Xiao, Tiqiao |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2022 |
| 卷号 | 13期号:1页码:5816 |
| DOI | 10.1038/s41467-022-33188-x |
| 文献子类 | Article |
| 英文摘要 | Cracking from a fine equiaxed zone (FQZ), often just tens of microns across, plagues the welding of 7000 series aluminum alloys. Using a multiscale correlative methodology, from the millimeter scale to the nanoscale, we shed light on the strengthening mechanisms and the resulting intergranular failure at the FQZ. We show that intergranular AlCuMg phases give rise to cracking by micro-void nucleation and subsequent link-up due to the plastic incompatibility between the hard phases and soft (low precipitate density) grain interiors in the FQZ. To mitigate this, we propose a hybrid welding strategy exploiting laser beam oscillation and a pulsed magnetic field. This achieves a wavy and interrupted FQZ along with a higher precipitate density, thereby considerably increasing tensile strength over conventionally hybrid welded butt joints, and even friction stir welds. Fusion welding of 7000 series aluminum alloy is plagued by cracking from a fine equiaxed zone (FQZ). Here, the authors quantify key softening mechanisms, show the damage accumulation sequence, and propose a hybrid laser/arc welding strategy to mitigate the FQZ and increase weld strength and toughness. |
| 电子版国际标准刊号 | 2041-1723 |
| 语种 | 英语 |
| WOS记录号 | WOS:000865250300017 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299962]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Hu, Yanan,Wu, Shengchuan,Guo, Yi,et al. Inhibiting weld cracking in high-strength aluminium alloys[J]. NATURE COMMUNICATIONS,2022,13(1):5816. |
| APA | Hu, Yanan.,Wu, Shengchuan.,Guo, Yi.,Shen, Zhao.,Korsunsky, Alexander M..,...&Withers, Philip J..(2022).Inhibiting weld cracking in high-strength aluminium alloys.NATURE COMMUNICATIONS,13(1),5816. |
| MLA | Hu, Yanan,et al."Inhibiting weld cracking in high-strength aluminium alloys".NATURE COMMUNICATIONS 13.1(2022):5816. |
入库方式： OAI收割
来源：高能物理研究所
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。