| EFFECTS OF HIGH TEMPERATURE SHORT TIME AGEING TREATMENT ON THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Mg-3Nd-1Zn ALLOY | |
| Wang Wenhui1,2; Wu Di1; Chen Rongshi1; Lou Changsheng2 | |
| Corresponding Author | Wu Di(dwu@imr.ac.cn) |
| 2016-05-11 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 52Issue:5Pages:567-574 |
| Abstract | Among the traditional cast magnesium alloys system, Mg-3Nd-1Zn alloy with high strength and heat resistance, has been widely applied in aeronautics such as in engine box and wing rib of airplane. In present research, the as-cast Mg-2.7Nd-0.6Zn-0.5Zr (NZ31) alloy was solution treated and then aged at temperatures ranging from 200 degrees C to 300 degrees C. The microstructures and mechanical properties of the aged specimens especially at relatively high temperature (225 similar to 300 degrees C) were systematically characterized by OM, SEM and TEM. A new kind of precipitates distributed in line was clearly found in the specimens aged at high temperature (225 similar to 275 degrees C) for a short time (15 similar to 30 min), which corresponded to a significant enhancement of hardness and tensile strength at room temperature. The TEM results showed that the precipitates distributed in line had a composition of Mg12Nd and a granular shape, and mainly formed along the (0001)(Mg) basal plane. The special distribution of the granular Mg12Nd precipitates was effective barriers to the basal slips and may probably restrain the intergranular coordination during tensile deformation, leading to a large strengthening effect, that is, the yield strength and ultimate tensile strength, of the NZ31 alloy aged at 250 similar to 275 degrees C for 20 similar to 30 min, increased by about 70% and 29% respectively, in comparison with only the solutionized one. |
| Keyword | magnesium alloy ageing treatment precipitate mechanical property |
| DOI | 10.11900/0412.1961.2015.00333 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000376471100007 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/122251 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wu Di |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China |
| Recommended Citation GB/T 7714 | Wang Wenhui,Wu Di,Chen Rongshi,et al. EFFECTS OF HIGH TEMPERATURE SHORT TIME AGEING TREATMENT ON THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Mg-3Nd-1Zn ALLOY[J]. ACTA METALLURGICA SINICA,2016,52(5):567-574. |
| APA | Wang Wenhui,Wu Di,Chen Rongshi,&Lou Changsheng.(2016).EFFECTS OF HIGH TEMPERATURE SHORT TIME AGEING TREATMENT ON THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Mg-3Nd-1Zn ALLOY.ACTA METALLURGICA SINICA,52(5),567-574. |
| MLA | Wang Wenhui,et al."EFFECTS OF HIGH TEMPERATURE SHORT TIME AGEING TREATMENT ON THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Mg-3Nd-1Zn ALLOY".ACTA METALLURGICA SINICA 52.5(2016):567-574. |
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