| Effect of heat treatment on eutectic silicon morphology and mechanical property of Al-Si-Cu-Mg cast alloys | |
| R. X. Li; R. D. Li; Y. H. Zhao; C. X. Li; X. F. Sun; H. R. Guan; Z. Q. Hu | |
| 2004 | |
| Source Publication | Transactions of Nonferrous Metals Society of China
 |
| ISSN | 1003-6326 |
| Volume | 14Issue:3Pages:496-500 |
| Abstract | Through morphology observation on silicon particles of Al-Si-Cu-Mg cast alloy, it is found that during solution treatment the evolution of eutectic silicon morphology and their effect on mechanical properties can be classified into three stages. In the initial stage, necking, stubbing and fragmentation of silicon particles result in the improvement of plasticity of alloy. In the intermediate stage, the mechanical properties of 354 alloy attain peak values due to spheroidization of silicon particles. In the final stage, the drop of hardness and strength is related to the deterioration of silicon morphology. The facets and lap occur in silicon particles and the coarsening process of silicon follows LSW model. During aging, the clusters of excess silicon can work as barriers for dislocation movement and thus enhance the strength of alloy. On the other hand, excess Si affects the process of aging precipitation and leads to a fine and highly dense distribution of GP zones, finally effectively strengthens the alloy. |
| description.department | shenyang inst aeronaut engn, dept mat engn, shenyang 110034, peoples r china. shenyang univ technol, sch mat sci & engn, shenyang 110023, peoples r china. chinese acad sci, inst met res, shenyang 110016, peoples r china.;li, rx (reprint author), shenyang inst aeronaut engn, dept mat engn, shenyang 110034, peoples r china;runxiali@hotmail.com |
| Keyword | Al-si-cu-mg Alloy Eutectic Silicon Mechanical Property Heat Treatment Quantitative Metallography Phase |
| URL | 查看原文 |
| WOS ID | WOS:000222451000017 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/35418 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | R. X. Li,R. D. Li,Y. H. Zhao,et al. Effect of heat treatment on eutectic silicon morphology and mechanical property of Al-Si-Cu-Mg cast alloys[J]. Transactions of Nonferrous Metals Society of China,2004,14(3):496-500. |
| APA | R. X. Li.,R. D. Li.,Y. H. Zhao.,C. X. Li.,X. F. Sun.,...&Z. Q. Hu.(2004).Effect of heat treatment on eutectic silicon morphology and mechanical property of Al-Si-Cu-Mg cast alloys.Transactions of Nonferrous Metals Society of China,14(3),496-500. |
| MLA | R. X. Li,et al."Effect of heat treatment on eutectic silicon morphology and mechanical property of Al-Si-Cu-Mg cast alloys".Transactions of Nonferrous Metals Society of China 14.3(2004):496-500. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment