Effects of Cu addition on the microstructure and mechanical properties of as-cast and heat treated Mg-6Zn-4Al magnesium alloy
文献类型：期刊论文
| 作者 | Zhu, Shaozhen ; Luo, Tianjiao ; Zhang, Tingan ; Li, Yingju ; Yang, Yuansheng |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2017-03-24 |
| 卷号 | 689页码:203-211 |
| 关键词 | Magnesium alloy Mg-Zn-Al Cu addition Heat treatment Mechanical properties |
| ISSN号 | 0921-5093 |
| 通讯作者 | Yang, YS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| 中文摘要 | The microstructure and mechanical properties of as-cast and heat treated Mg-6Zn-4Al-xCu (x=0, 0.5, 1.0 and 1.5 wt%) alloys were investigated in this work. The results show that the grain sizes of the alloys decrease considerably with increasing Cu addition, and the eutectics are refined with 0.5% Cu addition. The icosahedral quasi-crystalline phase is observed in Mg-6Zn-4Al and Cu-containing alloys, and the MgAlCu phase forms in the Cu-containing alloys because of Cu addition. Compared with Mg-6Zn-4Al alloy, the Cu-containing alloys exhibit improved age-hardening response during single-aging treatment. In addition, high-density fine precipitates are formed in the matrix during double-aging treatment, resulting in remarkable improvement of the tensile strength. The double aged Mg-6Zn-4Al-0.5Cu alloy shows the relatively optimal tensile properties. The yield strength, ultimate tensile strength and elongation are 202 MPa, 312 MPa and 7%, respectively, which is attributed to the combined effects of fine grains and the uniform distribution of high-density fine precipitates. It is noticed that the ductility of as-aged Cu-containing alloys is lower than that of the as-aged Mg-6Zn-4Al alloy due to the stress concentration during the tensile stress caused by the residual phases distributed along the grain boundaries after solution treatment. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program of China [2013CB632205]; National Key Research and Development Program of China [2016YFB0301105]; National Natural Science Foundation of China [51274184] |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78220]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Zhu, Shaozhen,Luo, Tianjiao,Zhang, Tingan,et al. Effects of Cu addition on the microstructure and mechanical properties of as-cast and heat treated Mg-6Zn-4Al magnesium alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,689:203-211. |
| APA | Zhu, Shaozhen,Luo, Tianjiao,Zhang, Tingan,Li, Yingju,&Yang, Yuansheng.(2017).Effects of Cu addition on the microstructure and mechanical properties of as-cast and heat treated Mg-6Zn-4Al magnesium alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,689,203-211. |
| MLA | Zhu, Shaozhen,et al."Effects of Cu addition on the microstructure and mechanical properties of as-cast and heat treated Mg-6Zn-4Al magnesium alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 689(2017):203-211. |
入库方式： OAI收割
来源：金属研究所
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