Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing
文献类型：期刊论文
| 作者 | Huo, Yaoxin3; Lu, Zhengguan1; Cheng, Min3; Fan, Jinping3; Qiao, Junwei3; Xu, Lei1; Guo, Ruipeng3; Yang, Rui1; Liaw, P. K.2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2023-09-06 |
| 卷号 | 883页码:9 |
| 关键词 | Titanium alloys Dwell effect Fatigue damage Powder metallurgy Hot isostatic pressing |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2023.145503 |
| 通讯作者 | Cheng, Min(chengmin@tyut.edu.cn) ; Xu, Lei(lxu@imr.ac.cn) ; Guo, Ruipeng(grp88620@163.com) |
| 英文摘要 | Dwell fatigue of titanium alloys used in aeroengine industry has threatened the reliability of aircraft for decades. Powder metallurgy (PM) through hot isostatic pressing (HIP) can fabricate titanium-alloy components with complex structures, and the mechanical properties are close to wrought alloys. Unfortunately, the dwell-fatigue behavior of the as-HIPed titanium-alloy powder components has not been reported in previous studies. The present work firstly investigated the effects of the peak stress (sigma p) and stress ratio (R) on the dwell-fatigue behavior and damage mechanism of the as-HIPed Ti-6Al-4V powder compact. With increasing sigma p, the dwell fatigue lives (NLCDF) decrease, but the dwell debit increases. The lowest NLCDF has been obtained at R = 0.1. With increasing R, the fatigue behavior of dwell fatigue is approaching to creep fatigue. When R is negative, the introduction of a lower reverse stress reduces the cumulated max plastic strain, resulting in the increment of NLCDF. Moreover, a crack-initiation and propagation model based on soft-hard grain pairs has been proposed to describe the dwell-fatigue mechanism. In addition, the dwell debit of PM Ti-6Al-4V alloys is similar to or even lower than that of wrought alloys. Improving the microstructure homogeneity of the material may be the key to further reducing the dwell effect. |
| 资助项目 | National Natural Science Foundation of China[52205407] ; Natural Science Foundation of Shanxi Province, China[202203021221072] ; Natural Science Foundation of Shanxi Province, China[202203021212237] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; National Science Foundation[DMR-1611180] ; National Science Foundation[1809640] ; National Science Foundation[2226508] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001090622300001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Shanxi Province, China ; CAS Project for Young Scientists in Basic Research ; National Science Foundation |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177930]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Cheng, Min; Xu, Lei; Guo, Ruipeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA 3.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huo, Yaoxin,Lu, Zhengguan,Cheng, Min,et al. Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,883:9. |
| APA | Huo, Yaoxin.,Lu, Zhengguan.,Cheng, Min.,Fan, Jinping.,Qiao, Junwei.,...&Liaw, P. K..(2023).Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,883,9. |
| MLA | Huo, Yaoxin,et al."Understanding the dwell-fatigue-damage mechanism of powder metallurgy Ti-6Al-4V alloys fabricated by hot isostatic pressing".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 883(2023):9. |
入库方式： OAI收割
来源：金属研究所
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