Investigation on the Influence Mechanism of Mg Contents on the Hot Cracking Behavior of Al-Cu-Mg Alloys
文献类型：期刊论文
| 作者 | Su, Ming1; Zhou, Minghui2; Yue, Chunyu2; Zhou, Lixin1; Zheng, Wentao2; Zheng, Bowen2; Zuo, Xiaojiao2; Yuan, Xiaoguang2 |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
 |
| 出版日期 | 2024-11-13 |
| 页码 | 20 |
| ISSN号 | 1073-5615 |
| DOI | 10.1007/s11663-024-03280-2 |
| 通讯作者 | Zhou, Lixin(lxzhou@imr.ac.cn) ; Yuan, Xiaoguang(yuanxg@sut.edu.cn) |
| 英文摘要 | The present work focuses on the mechanisms of liquid film feeding and intermetallic compounds interface property in the Mg content of Al-Cu-Mg alloys hot cracking behavior. Experimental results reveal that two types of hot cracking microstructure are observed when the mushy zone of Al-Cu-Mg alloys is constituted of liquid film and spherical solid grains. One type is attributed to the premature formation of a closed region which prevents the feeding of the liquid film and insufficient feeding of the liquid film, while the other is formed due to unstable intermetallic compounds. Combined with multiscale simulation calculations, it is demonstrated that in alloys which hot cracking is induced by the formation of a premature closed zone and insufficient liquid film feeding, the Al-4.0Cu-1.5Mg alloy exhibits the highest residual liquid film feeding volume (Vresidual*) value of 5.59 x 104 mu m3, indicating the lowest hot cracking susceptibility. Therefore, in the absence of dendrite bridging effects on hot cracking formation, the mechanism by which grain refinement affects hot cracking is to decrease the solid phase shrinkage volume (Vs*) while increasing the liquid film feeding volume (Vfeeding*), thereby reducing the tendency for hot cracking initiation. Furthermore, molecular dynamics (MD) simulation is used to calculate the interface stability of different intermetallic compounds. The results demonstrate that the interfacial separation works for Al2CuMg//Al and Al2CuMg//Al2Cu are 28.805 and 2.849 J/m2, respectively. These values are higher than those for AlCuMg//Al and AlCuMg//Al2Cu (26.939 and 2.473 J/m2), indicating that interfaces with AlCuMg as the matrix are more susceptible to be separated. When the Mg element content exceeds 1.5 wt pct, the formation of the unstable AlCuMg phase increases the sources of hot cracks. The research findings of this work provide design insights and theoretical guidance for development alloys with low hot cracking susceptibility. |
| 资助项目 | National Natural Science Foundation of China[51875365] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001353860800001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhou, Lixin; Yuan, Xiaoguang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Ming,Zhou, Minghui,Yue, Chunyu,et al. Investigation on the Influence Mechanism of Mg Contents on the Hot Cracking Behavior of Al-Cu-Mg Alloys[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2024:20. |
| APA | Su, Ming.,Zhou, Minghui.,Yue, Chunyu.,Zhou, Lixin.,Zheng, Wentao.,...&Yuan, Xiaoguang.(2024).Investigation on the Influence Mechanism of Mg Contents on the Hot Cracking Behavior of Al-Cu-Mg Alloys.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,20. |
| MLA | Su, Ming,et al."Investigation on the Influence Mechanism of Mg Contents on the Hot Cracking Behavior of Al-Cu-Mg Alloys".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE (2024):20. |
入库方式： OAI收割
来源：金属研究所
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