HARDENING BEHAVIOR OF THE AS-CAST Al-Mg-Sc-Zr ALLOY
文献类型：期刊论文
| 作者 | Du Gang; Yang Wen; Yan Desheng; Rong Lijian |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2011-03-11 |
| 卷号 | 47期号:3页码:311-316 |
| 关键词 | Al-Mg-Sc-Zr alloy annealing precipitation strengthening microstructure |
| ISSN号 | 0412-1961 |
| DOI | 10.3724/SP.J.1037.2010.00645 |
| 通讯作者 | Rong Lijian(ljrong@imr.ac.cn) |
| 英文摘要 | Addition of minor Sc and Zr to the Al-Mg alloys can effectively improve the recrystallization temperature and strength of the alloys due to the formation of L1(2) structured Al-3(Sc, Zr) precipitates. To optimize the mechanical properties of the Al-Mg-Sc-Zr alloys, it is important to understand the precipitation behavior of the Al-3(Sc, Zr) precipitates and the corresponding strengthening effect during the annealing of Al-Mg-Sc-Zr alloys. In this work, isothermal annealing at the temperatures between 250 and 450 degrees C was conducted to study the precipitation behavior of Al-3(Sc, Zr) particles in the as-cast Al-6Mg-0.2Sc-0.15Zr alloy (mass fraction, %). The results show that dramatic precipitation hardening occurred with the formation of the coherent Al-3(Sc, Zr) precipitates during the annealing. Precipitation process of the Al-3(Sc, Zr) accelerates with the increase of the annealing temperature. After the sample was annealed at 300 degrees C for 24 h, the Al-3(Sc, Zr) particles were in a size of 5 nm and the yield strength of the as-cast alloy can be increased by 90 MPa. Severe coarsening of Al-3(Sc, Zr) occurred when the annealing temperature is above 400 degrees C. After annealed at 450 degrees C for 24 h, average particle size of Al-3(Sc, Zr) particles was found increase to 30 nm, with the corresponding precipitation strengthening effect to be about 30 MPa. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000289587300009 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/106601]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Rong Lijian |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du Gang,Yang Wen,Yan Desheng,et al. HARDENING BEHAVIOR OF THE AS-CAST Al-Mg-Sc-Zr ALLOY[J]. ACTA METALLURGICA SINICA,2011,47(3):311-316. |
| APA | Du Gang,Yang Wen,Yan Desheng,&Rong Lijian.(2011).HARDENING BEHAVIOR OF THE AS-CAST Al-Mg-Sc-Zr ALLOY.ACTA METALLURGICA SINICA,47(3),311-316. |
| MLA | Du Gang,et al."HARDENING BEHAVIOR OF THE AS-CAST Al-Mg-Sc-Zr ALLOY".ACTA METALLURGICA SINICA 47.3(2011):311-316. |
入库方式： OAI收割
来源：金属研究所
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