| Microstructure and mechanical properties of Mg-7Zn-3Al alloy with Nd and Y additions | |
| Alternative Title | Microstructure and mechanical properties of Mg-7Zn-3Al alloy with Nd and Y additions |
| Luo Jinhua1; Qiu Kehui1; Wang Jie2; Dong Xuguang2; Li Fensheng1 | |
| 2012 | |
| Source Publication | JOURNAL OF RARE EARTHS
 |
| ISSN | 1002-0721 |
| Volume | 30Issue:5Pages:486-491 |
| Abstract | The effects of combined addition of 0.6 wt.% Nd and 0.4 wt.% Y on the microstructure and mechanical properties of Mg-7Zn-3Al alloy were investigated. The results indicated that the Nd and Y addition led to obvious dendrite coarsening. However, it could modify the morphology and distribution of tau-Mg-32(Al,Zn)(49) intermetallics. Moreover, Al2REZn2 phase could be introduced into the alloy with the Nd and Y addition. With the effective second-phase strengthening, the ultimate tensile strength and elongation in as-cast state can be improved by the Nd and Y addition. After ageing treatment, the alloy with the Nd and Y addition exhibited better precipitation strengthening effects by forming finer MgZn2 and Mg-32(Al,Zn)(49) precipitates into the alpha-Mg matrix. As a result, the yield and ultimate strength of Mg-7Zn-3Al-0.6Nd-0.4Y alloy could be increased to 182 and 300 MPa by peak-ageing treatment. |
| Other Abstract | The effects of combined addition of 0.6 wt.% Nd and 0.4 wt.% Y on the microstructure and mechanical properties of Mg-7Zn-3Al alloy were investigated.The results indicated that the Nd and Y addition led to obvious dendrite coarsening.However,it could modify the morphology and distribution of-Mg_(32)(Al,Zn)_(49) intermetallics.Moreover,Al_2REZn_2 phase could be introduced into the alloy with the Nd and Y addition.With the effective second-phase strengthening,the ultimate tensile strength and elongation in as-cast state can be improved by the Nd and Y addition.After ageing treatment,the alloy with the Nd and Y addition exhibited better precipitation strengthening effects by forming finer MgZn_2 and Mg_(32)(Al,Zn)_(49) precipitates into the-Mg matrix.As a result,the yield and ultimate strength of Mg-7Zn3Al-0.6Nd-0.4Y alloy could be increased to 182 and 300 MPa by peak-ageing treatment. |
| Keyword | ZN-AL ALLOYS MAGNESIUM ALLOY BEHAVIOR CREEP Mg-7Zn-3Al alloy microstructure mechanical properties rare earths |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:4557984 |
| Citation statistics |
Cited Times:8[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/153453 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.Chengdu Univ Technol, Institute Mat Sci & Engn, Chengdu 610059, Peoples R China 2.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Luo Jinhua,Qiu Kehui,Wang Jie,et al. Microstructure and mechanical properties of Mg-7Zn-3Al alloy with Nd and Y additions[J]. JOURNAL OF RARE EARTHS,2012,30(5):486-491. |
| APA | Luo Jinhua,Qiu Kehui,Wang Jie,Dong Xuguang,&Li Fensheng.(2012).Microstructure and mechanical properties of Mg-7Zn-3Al alloy with Nd and Y additions.JOURNAL OF RARE EARTHS,30(5),486-491. |
| MLA | Luo Jinhua,et al."Microstructure and mechanical properties of Mg-7Zn-3Al alloy with Nd and Y additions".JOURNAL OF RARE EARTHS 30.5(2012):486-491. |
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