The Intrinsic Relationship Between Microstructure Evolution and Thermal Fatigue Behavior of a Single-Crystal Cobalt-Base Superalloy
文献类型：期刊论文
| 作者 | Gui, Wei-Min; Zhang, Hong-Yu; Yang, Min; Jin, Tao; Sun, Xiao-Feng; Zheng, Qi; Zheng, Q (reprint author), Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China. |
| 刊名 | CHINESE ACAD SCIENCES, INST METAL RESEARCH
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 30期号:12页码:1192-1200 |
| ISSN号 | 1006-7191 |
| 关键词 | Cobalt-base Superalloys Heat Treatment Thermal Fatigue Carbide Oxidation |
| 英文摘要 | The intrinsic relationship between the microstructure evolution and thermal fatigue behavior of a single-crystal cobalt-base superalloy has been investigated. The thermal fatigue tests are performed cyclically between room temperature and 1050 degrees C using V-notch plate specimens. Three states of thermal fatigue specimens are selected: the as-cast, solutionized as well as aged states. The solution treatment is carried out at 1260 degrees C for 24 h, which results in the dissolution of most of interdendritic continuous primary carbides. The subsequent aging treatment is carried out at 1100 degrees C for 100 h after solution treatment, resulting in the precipitation of a profusion of chain- and point-like M23C6 carbides in the matrix. The results indicate that the heat treatment can improve the thermal fatigue properties of the alloy and the effect of the solution treatment is more prominent than that of the aging treatment. The coarse and continuously distributed primary carbides in the as-cast state are changed into small and discontinuous distribution by heat treatment, which is the dominant factor in the improvement of thermal fatigue property. Additionally, the effect of oxidation behavior during thermal fatigue test on the thermal fatigue behavior is also studied.; The intrinsic relationship between the microstructure evolution and thermal fatigue behavior of a single-crystal cobalt-base superalloy has been investigated. The thermal fatigue tests are performed cyclically between room temperature and 1050 degrees C using V-notch plate specimens. Three states of thermal fatigue specimens are selected: the as-cast, solutionized as well as aged states. The solution treatment is carried out at 1260 degrees C for 24 h, which results in the dissolution of most of interdendritic continuous primary carbides. The subsequent aging treatment is carried out at 1100 degrees C for 100 h after solution treatment, resulting in the precipitation of a profusion of chain- and point-like M23C6 carbides in the matrix. The results indicate that the heat treatment can improve the thermal fatigue properties of the alloy and the effect of the solution treatment is more prominent than that of the aging treatment. The coarse and continuously distributed primary carbides in the as-cast state are changed into small and discontinuous distribution by heat treatment, which is the dominant factor in the improvement of thermal fatigue property. Additionally, the effect of oxidation behavior during thermal fatigue test on the thermal fatigue behavior is also studied. |
| 学科主题 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China [51331005, 51601192, 51671188, 11332010]; High Technology Research and Development Program of China [2014AA041701] |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78960]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zheng, Q (reprint author), Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Gui, Wei-Min,Zhang, Hong-Yu,Yang, Min,et al. The Intrinsic Relationship Between Microstructure Evolution and Thermal Fatigue Behavior of a Single-Crystal Cobalt-Base Superalloy[J]. CHINESE ACAD SCIENCES, INST METAL RESEARCH,2017,30(12):1192-1200. |
| APA | Gui, Wei-Min.,Zhang, Hong-Yu.,Yang, Min.,Jin, Tao.,Sun, Xiao-Feng.,...&Zheng, Q .(2017).The Intrinsic Relationship Between Microstructure Evolution and Thermal Fatigue Behavior of a Single-Crystal Cobalt-Base Superalloy.CHINESE ACAD SCIENCES, INST METAL RESEARCH,30(12),1192-1200. |
| MLA | Gui, Wei-Min,et al."The Intrinsic Relationship Between Microstructure Evolution and Thermal Fatigue Behavior of a Single-Crystal Cobalt-Base Superalloy".CHINESE ACAD SCIENCES, INST METAL RESEARCH 30.12(2017):1192-1200. |
入库方式： OAI收割
来源：金属研究所
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