Microstructure evolutions and deformation mechanisms of a Ni-based GH3536 Superalloy during loading at 293 K and 77 K
文献类型：期刊论文
| 作者 | Wang, Yong-Qiang1,2; Yuan, Chao1; Zhang, Bing1,2; Gao, Xin-Yu1,2; Qiao, Shi-Chang1,2; Wen, Xin1,2; Chen, Yi-Peng1,2; Wang, Feng-Zhen1,2 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 206页码:13 |
| 关键词 | Nickel -based superalloys Mechanical properties Deformation mechanism Microstructure Twinning |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2023.113422 |
| 通讯作者 | Yuan, Chao(ychao@imr.ac.cn) |
| 英文摘要 | In this study, tensile tests and interrupted experiments at different true strain levels were performed at 293 K and 77 K to reveal the deformation mechanisms of GH3536 superalloy during loading. The microstructure evolutions of the alloy with strain at both temperature were studied via Transmission electron microscopy (TEM), and dislocation densities were calculated by X-ray diffraction (XRD) for quantifying the forest hardening contribution to the flow stress. Deformation twins were rarely observed in the GH3536 superalloy specimens deformed at 293 K, where deformation occurred solely by dislocation slip. While twinning was initially found at a strain of similar to 7% at 77 K, and the corresponding stress at which twinning occurs is 808 +/- 46 MPa. The twin volume fractions, their widths and spacings were determined by electron backscatter diffraction (EBSD), which is used to investigate the twin evolution of GH3536 alloy at 77 K. The deformation mechanisms of GH3536 alloy, as well as its twinning behaviors, depend on the competition between the maximum flow stress and critical stress for twinning. The maximum flow stress is large enough to activate twinning at cryogenic temperature, resulting in the transition of deformation mechanisms for GH3536 alloy as SLIP (dislocation slip) at 293 K and TWIP+SLIP (deformation twinning and dislocation slip) at 77 K, and the improved combination of ductility and strength at 77 K compared to 293 K is derived from additional deformation mode provided by twinning during the process of deformation. |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001110022900001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177306]  |
| 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.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yong-Qiang,Yuan, Chao,Zhang, Bing,et al. Microstructure evolutions and deformation mechanisms of a Ni-based GH3536 Superalloy during loading at 293 K and 77 K[J]. MATERIALS CHARACTERIZATION,2023,206:13. |
| APA | Wang, Yong-Qiang.,Yuan, Chao.,Zhang, Bing.,Gao, Xin-Yu.,Qiao, Shi-Chang.,...&Wang, Feng-Zhen.(2023).Microstructure evolutions and deformation mechanisms of a Ni-based GH3536 Superalloy during loading at 293 K and 77 K.MATERIALS CHARACTERIZATION,206,13. |
| MLA | Wang, Yong-Qiang,et al."Microstructure evolutions and deformation mechanisms of a Ni-based GH3536 Superalloy during loading at 293 K and 77 K".MATERIALS CHARACTERIZATION 206(2023):13. |
入库方式： OAI收割
来源：金属研究所
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