Dependence of deformation mechanisms on micro-pores in the fourth-generation single crystal superalloy during out-of-phase thermal-mechanical fatigue
文献类型：期刊论文
| 作者 | Tan, Zihao1,2; Wang, Xinguang1; Ge, Zhicheng3; Mu, Yahang1,2; Li, Yongmei1,2; Pang, Jianchao1; Tao, Xipeng1; Zou, Mingke1; Yang, Yanhong1; Liu, Jide1 |
| 刊名 | INTERNATIONAL JOURNAL OF FATIGUE
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 180页码:13 |
| 关键词 | Fourth -generation single crystal superalloy Thermal -mechanical fatigue Micro -pores Deformation mechanism Twinning |
| ISSN号 | 0142-1123 |
| DOI | 10.1016/j.ijfatigue.2023.108086 |
| 通讯作者 | Wang, Xinguang(xgwang11b@imr.ac.cn) ; Sun, Xiaofeng(xfsun@imr.ac.cn) |
| 英文摘要 | The high-temperature and long-term solution heat treatments of fourth-generation single crystal (SX) superalloys have sparked an increasing number of homogenization pores in the alloy. Out-of-phase (OP) thermal-mechanical fatigue (TMF) experiments were conducted to elucidate the effect of pores on the fatigue behaviors and deformation mechanisms. The results showed that the plastic deformation was mainly concentrated upon gamma matrix in regions away from pores, more specifically, intrinsic stacking fault (ISF) and extrinsic stacking fault (ESF) as well as dislocation cross-slipping were detected. In areas near micropores, however, the gamma/gamma '-structure was subjected to severe twinning shearing. High-resolution observation illustrated that the amount of ESF and a/6 112 twinning dislocations had remarkably increased. Besides, the partial dislocations were more prone to move in different slipping systems at these regions with considerable stress concentration. These factors collectively enabled the formation of deformation twins from the edge of micro-pores. Moreover, the twinning nucleation could occur near both H-pores and S-pores, while the increasing pore size would enhance the nucleation and propagation of pore-induced twins by a large margin. These findings reported have provided important guidance for the future application of the fourth-generation SX superalloys. |
| 资助项目 | National Key R & D Program of China[2017YFA0700704] ; Middle-aged and Youth Tal- ents in Scientific and Technological Innovation Project of Shenyang[RC220440] ; Excellent Youth Foundation of Liaoning Province[2021-YQ-02] ; National Science and Technology Major Project[2017 -VI -0002-0072] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001139985700001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key R & D Program of China ; Middle-aged and Youth Tal- ents in Scientific and Technological Innovation Project of Shenyang ; Excellent Youth Foundation of Liaoning Province ; National Science and Technology Major Project |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Xinguang; Sun, Xiaofeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan, Zihao,Wang, Xinguang,Ge, Zhicheng,et al. Dependence of deformation mechanisms on micro-pores in the fourth-generation single crystal superalloy during out-of-phase thermal-mechanical fatigue[J]. INTERNATIONAL JOURNAL OF FATIGUE,2024,180:13. |
| APA | Tan, Zihao.,Wang, Xinguang.,Ge, Zhicheng.,Mu, Yahang.,Li, Yongmei.,...&Sun, Xiaofeng.(2024).Dependence of deformation mechanisms on micro-pores in the fourth-generation single crystal superalloy during out-of-phase thermal-mechanical fatigue.INTERNATIONAL JOURNAL OF FATIGUE,180,13. |
| MLA | Tan, Zihao,et al."Dependence of deformation mechanisms on micro-pores in the fourth-generation single crystal superalloy during out-of-phase thermal-mechanical fatigue".INTERNATIONAL JOURNAL OF FATIGUE 180(2024):13. |
入库方式： OAI收割
来源：金属研究所
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