Effect of temperature on the mechanical properties of Al-Si-Cu-Mg-Ni-Ce alloy
文献类型：期刊论文
| 作者 | Liu, H. Q.1; Pang, J. C.1,2; Wang, M.1; Li, S. X.1; Zhang, Z. F.1,2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2021-09-08 |
| 卷号 | 824页码:10 |
| ISSN号 | 0921-5093 |
| 关键词 | Cast Al-Si alloy High-temperature tension Strengthening precipitate Constitutive equation |
| DOI | 10.1016/j.msea.2021.141762 |
| 通讯作者 | Pang, J. C.(jcpang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 英文摘要 | High-temperature performance is a key factor to concern for the application of cast Al-Si alloys. The evolution of microstructures and mechanical properties of a multiphase Al-Si-Cu-Mg-Ni-Ce alloy during tension in a temperature range from 25 degrees C (ambient temperature) to 425 degrees C was investigated. The results show that the main strengthening precipitates of the alloy are theta' and Q phases. They are stable at 25-250 degrees C, while dissolve rapidly above 250 degrees C during tension. The damage initiates and propagates in the form of cracking of brittle phases. The fracture mechanism transforms from quasi-cleavage to coexistence of quasi-cleavage and dimple as temperature increases. The Ce-bearing phase Al20Ti2Ce promotes the damage occurrence below 350 degrees C while hinders crack propagation at 425 degrees C. The ultimate tensile strength (UTS) and yield strength (YS) decrease as the tensile temperature increases. The decreasing rate of UTS can be divided into three stages which is associated with the decreasing rate of strengthening precipitates. An empirical constitutive equation is proposed to describe the relationship between UTS and tensile temperature. It provides a good estimation for both cast and wrought Al alloys and the predicted strengths are in good agreement with the experimental results. |
| 资助项目 | National Nat-ural Science Foundation of China (NSFC)[51871224] ; Liao Ning Revitalization Talents Program[XLYC1808027] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000689227900002 |
| 资助机构 | National Nat-ural Science Foundation of China (NSFC) ; Liao Ning Revitalization Talents Program |
| 源URL | [http://ir.imr.ac.cn/handle/321006/166867]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Pang, J. C.; Zhang, Z. F. |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, H. Q.,Pang, J. C.,Wang, M.,et al. Effect of temperature on the mechanical properties of Al-Si-Cu-Mg-Ni-Ce alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,824:10. |
| APA | Liu, H. Q.,Pang, J. C.,Wang, M.,Li, S. X.,&Zhang, Z. F..(2021).Effect of temperature on the mechanical properties of Al-Si-Cu-Mg-Ni-Ce alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,824,10. |
| MLA | Liu, H. Q.,et al."Effect of temperature on the mechanical properties of Al-Si-Cu-Mg-Ni-Ce alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 824(2021):10. |
入库方式： OAI收割
来源：金属研究所
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