| Cyclic and static creep behavior of Al-Cu alloy composite reinforced with in-situ Al2O3 and TiB2 particulates | |
| Z. Y. Ma; S. C. Tjong; Z. G. Wang | |
| 1999 | |
| Source Publication | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| ISSN | 0921-5093 |
| Volume | 264Issue:1-2Pages:177-187 |
| Abstract | Static and cyclic creep tests were carried out in tension at 573-623 K on Al-4wt.%Cu alloy (Al2O3.TiB2/Al-Cu) composite reinforced with in-situ 11.1 vol.%Al2O3 and 8.9 vol.%TiB2 particulates. The Al2O3.TiB2/Al-Cu composite exhibited an apparent stress exponent of 11.8-12.6 and 22.2-23.3 and an apparent activation energy of 337 and 421 kJ/mol for static and cyclic creep, respectively. The values of apparent stress exponent and activation energy for cyclic creep of the Al2O3.TiB2/Al-Cu composite were much higher than those obtained from the static creep measurements. Cyclic creep retardation (CCR) behavior was observed in the Al2O3.TiB2/Al-Cu composite. Furthermore, the steady state creep rate for cyclic creep tended to decrease with increasing the loading frequency and percentage of unloading amount. The CCR behavior is explained in terms of the storage of anelastic strain delaying nonrecoverable creep during the on-load cycles. Finally, the creep rupture behavior of the Al2O3.TiB2/Al-Cu composite is best described by Monkman-Grant and Dobes-Milicka empirical equations. (C) 1999 Elsevier Science S.A. All rights reserved. |
| description.department | city univ hong kong, dept phys & mat sci, kowloon, hong kong. chinese acad sci, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china.;tjong, sc (reprint author), city univ hong kong, dept phys & mat sci, 83 tat chee ave, kowloon, hong kong |
| Keyword | Static Creep Test Cyclic Creep Test Al-cu Alloy High-temperature Creep Metal-matrix Composites Aluminum Composites Sic Composites Steady-state Microstructure Stress 2124-al Rupture |
| URL | 查看原文 |
| WOS ID | WOS:000079863100018 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/37457 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Z. Y. Ma,S. C. Tjong,Z. G. Wang. Cyclic and static creep behavior of Al-Cu alloy composite reinforced with in-situ Al2O3 and TiB2 particulates[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1999,264(1-2):177-187. |
| APA | Z. Y. Ma,S. C. Tjong,&Z. G. Wang.(1999).Cyclic and static creep behavior of Al-Cu alloy composite reinforced with in-situ Al2O3 and TiB2 particulates.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,264(1-2),177-187. |
| MLA | Z. Y. Ma,et al."Cyclic and static creep behavior of Al-Cu alloy composite reinforced with in-situ Al2O3 and TiB2 particulates".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 264.1-2(1999):177-187. |
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