Effect of aging on fatigue-crack growth behavior of a high-temperature titanium alloy
文献类型：期刊论文
| 作者 | J. R. Liu ; S. X. Li ; D. Li ; R. Yang |
| 刊名 | Materials Transactions
 |
| 出版日期 | 2004 |
| 卷号 | 45期号:5页码:1577-1585 |
| 关键词 | aging effect fatigue crack growth behavior high-temperature titanium alloy high-cycle fatigue microstructural influences silicide precipitation room-temperature stress ratio ti-6al-4v fracture propagation tensile phase |
| ISSN号 | 1345-9678 |
| 中文摘要 | The effects of aging on the room-temperature fatigue-crack growth (FCG) behavior of a newly developed high-temperature near-a titanium alloy (Ti-5.6Al-4.8Sn-2Zr-1.0Mo-0.32Si-0.8Nd) with both bimodal and lamellar microstructures were investigated. The results indicate that aging had a relatively small effect on the FCG behaviors of the concerned alloy. The effect of aging is more pronounced on the lamellar than on the bimodal microstructure. This effect reduces with aging time especially for the lamellar microstructure. TEM and SEM studies were performed to gain insight into the deformation behavior and crack propagation mechanisms of the alloy. Dependence of the FCG rates on aging treatment is rationalized by considering changes in crack path tortuosity, roughness-induced crack closure and deformation uniformity. Slip reversibility is also considered. The work suggests that the amount and size of alpha(2) particles based on Ti3Al is mainly responsible for this dependence in the high DeltaK range. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35461]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. R. Liu,S. X. Li,D. Li,et al. Effect of aging on fatigue-crack growth behavior of a high-temperature titanium alloy[J]. Materials Transactions,2004,45(5):1577-1585. |
| APA | J. R. Liu,S. X. Li,D. Li,&R. Yang.(2004).Effect of aging on fatigue-crack growth behavior of a high-temperature titanium alloy.Materials Transactions,45(5),1577-1585. |
| MLA | J. R. Liu,et al."Effect of aging on fatigue-crack growth behavior of a high-temperature titanium alloy".Materials Transactions 45.5(2004):1577-1585. |
入库方式： OAI收割
来源：金属研究所
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