Crack nucleation and dislocation activities in titanium alloys with the strong transverse texture: Insights for enhancing dwell fatigue resistance
文献类型：期刊论文
| 作者 | Jia, Runchen1,4,5; Zeng, Weidong1,4,5; Zhao, Zibo2,3; Wang, Boning1,4,5; Chen, Hanwen1,4,5; Xu, Jianwei1,4,5; Wang, Qingjiang2,3 |
| 刊名 | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 175页码:20 |
| 关键词 | PR China Dwell fatigue Texture Crack initiation mechanism Facet formation Dislocations Twinning activation |
| ISSN号 | 0749-6419 |
| DOI | 10.1016/j.ijplas.2024.103938 |
| 通讯作者 | Jia, Runchen(jiarunchen@mail.nwpu.edu.cn) ; Zeng, Weidong(zengwd@nwpu.edu.cn) ; Zhao, Zibo(zbzhao@imr.ac.cn) |
| 英文摘要 | Cold dwell sensitivity of near alpha titanium alloys has posed a significant challenge to the engineering safety within the aerospace industry. However, there exists inconsistency regarding the critical facet formation mechanism between basal and prismatic nucleation. A key revelation in this paper is that the controversy surrounding the facet nucleation plane primarily arises from variations in texture: when the loading direction is parallel to the c-axis or at a 45 degrees angle, it leads to basal plane cracking, whereas loading direction perpendicular to the c-axis results in prismatic plane cracking. What's more, a large anisotropy is observed in the dwell fatigue performance in descending order: rolling direction (RD) > transverse direction (TD) >45 degrees direction. To be specific, the dwell fatigue life of RD specimens was 2 times and 4.07 times longer than that of TD and 45 degrees specimens, which exhibits excellent dwell fatigue resistance. Furthermore, the high prismatic dislocation density near the facet of RD specimen was confirmed through the Transmission Electron Microscope (TEM) and Transmission Kikuchi Diffraction (TKD) map, which is evidenced that prismatic slips lead to higher strain hardening during cyclic loading. The basal plane of facet grain is generally parallel to the facet line, indicating that the elliptical facet developed by the transgranular fracture through basal plane. Twinning activation in hard grain to accommodate deformation in Ti60 alloy is firstly observed under dwell fatigue tests, which is a product of high stress level in the hard grain. This paper unveils the significant impact of texture on dwell fatigue resistance, offering novel insights into enhancing dwell fatigue performance through texture control. |
| 资助项目 | National Major Science and Technology Project ; Youth Innovation Promotion Association CAS[2022KXJ-079] ; Construction of 'Scientists + Engineers' Team in Qinchuangyuan, Shaanxi Province[J2019-VI-0005-0119] ; [2020193] |
| WOS研究方向 | Engineering ; Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001205855400001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Major Science and Technology Project ; Youth Innovation Promotion Association CAS ; Construction of 'Scientists + Engineers' Team in Qinchuangyuan, Shaanxi Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Jia, Runchen; Zeng, Weidong; Zhao, Zibo |
| 作者单位 | 1.Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 4.Northwestern Polytech Univ, Def Technol Innovat Ctr Precis Forging & Ring Roll, Sch Mat Sci & Engn, Xian 710072, Peoples R China 5.Northwestern Polytech Univ, Shaanxi Key Lab High Performance Precis Forming Te, Xian 710072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Runchen,Zeng, Weidong,Zhao, Zibo,et al. Crack nucleation and dislocation activities in titanium alloys with the strong transverse texture: Insights for enhancing dwell fatigue resistance[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2024,175:20. |
| APA | Jia, Runchen.,Zeng, Weidong.,Zhao, Zibo.,Wang, Boning.,Chen, Hanwen.,...&Wang, Qingjiang.(2024).Crack nucleation and dislocation activities in titanium alloys with the strong transverse texture: Insights for enhancing dwell fatigue resistance.INTERNATIONAL JOURNAL OF PLASTICITY,175,20. |
| MLA | Jia, Runchen,et al."Crack nucleation and dislocation activities in titanium alloys with the strong transverse texture: Insights for enhancing dwell fatigue resistance".INTERNATIONAL JOURNAL OF PLASTICITY 175(2024):20. |
入库方式： OAI收割
来源：金属研究所
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