Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy
文献类型：期刊论文
| 作者 | Kong, Wei-Wen1,2; Yuan, Chao2; Zhang, Bao-Ning2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2020-07-22 |
| 卷号 | 791页码:12 |
| 关键词 | Superalloy High cycle fatigue Failure mode Dislocation structure Fatigue life |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2020.139775 |
| 通讯作者 | Yuan, Chao(ychao@imr.ac.cn) |
| 英文摘要 | High cycle fatigue properties with different stress levels were performed on GH4742 alloy at room temperature (RT) and 750 degrees C by staircase method. Comparative analyses of failure mode were made at the two different temperatures. The results show that failure mode changes gradually from surface defects failure to interior crystallographic facets failure with increasing temperature. Meanwhile, at 750 degrees C, the majority of specimens present crystallographic facets failure, while only three of initiations with higher stress level are associated with surface inclusions. The reasons for surface defects initiations are related to local stress concentration under lower temperatures or higher stress levels. The effects of competing failure modes on fatigue properties, including fatigue life and fatigue damage rate, were discussed in detail, which is consistent with the results fitted by Basquin relationship. Transmission Electron Microscope observation reveals that gamma' particles are sheared by dislocations at RT, whereas at 750 degrees C, climbing, bypassing and shearing mechanisms operate simultaneously, which is due to the higher thermal activation energy and stacking fault energy at 750 degrees C. |
| 资助项目 | National Science and Technology Major Project[2017-VI-0018-0090] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000551484000040 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Science and Technology Major Project |
| 源URL | [http://ir.imr.ac.cn/handle/321006/139969]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yuan, Chao |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kong, Wei-Wen,Yuan, Chao,Zhang, Bao-Ning. Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,791:12. |
| APA | Kong, Wei-Wen,Yuan, Chao,&Zhang, Bao-Ning.(2020).Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,791,12. |
| MLA | Kong, Wei-Wen,et al."Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 791(2020):12. |
入库方式： OAI收割
来源：金属研究所
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