The Effect of Primary Laves Phase on Notch Sensitivity in Thermo-span Superalloy
文献类型：期刊论文
| 作者 | Zhang, Weiwei2,3; Tan, Yuanguo4; Tariq, Naeem ul Haq1; Si, Tianxiao5; Wang, Zhiyuan2,3; Xin, Xin3; Sun, Wenru3 |
| 刊名 | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
 |
| 出版日期 | 2022-11-18 |
| 页码 | 11 |
| ISSN号 | 1059-9495 |
| 关键词 | crack propagation Laves phases notch sensitivity thermo-Span alloy gamma ' phases |
| DOI | 10.1007/s11665-022-07355-6 |
| 通讯作者 | Zhang, Weiwei(wwzhang16s@imr.ac.cn) |
| 英文摘要 | Laves phases are regarded as topologically close pack phases in superalloys, which damage mechanical properties, especially notch sensitivity of the material. However, here we innovatively found that the formation of large blocky primary Laves phase in Thermo-Span alloys does not cause notch sensitivity. The influence of primary Laves phases on the notch sensitivity was investigated via electron backscattered diffraction, transmission electron microscopy, and scanning electron microscopy. We found that primary Laves phases eliminate the notch sensitivity through inhibition of gamma' phase precipitation. The reduction of gamma' phases resulted in a decrease in grain-interior strength along with improvement in plasticity, thereby promoting the occurrence of intragranular plastic deformation. The intragranular plastic deformation can coordinate with incompatible deformation among neighboring grains, and thus crack initiation and propagation at grain boundaries was inhibited. These findings provide a new understanding of Laves phases; more importantly, providing a way to improve/eliminate the notch sensitivity of the alloy. Moreover, Abaqus software was employed to assess the stress distribution at different parts of combined-stress rupture samples. It was revealed that the difference in stress distribution at the notched and smooth regions is the main reason associated with different fracture locations for the samples with different resistance to crack initiation and propagation. |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000885233600005 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176764]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, Weiwei |
| 作者单位 | 1.Pakistan Inst Engn & Appl Sci, Dept Met & Mat Engn, Islamabad, Pakistan 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Univ Southampton, Fac Engn & Environm, Mech Engn Grp, Southampton, Hants, England 5.Shenyang Univ Technol, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Weiwei,Tan, Yuanguo,Tariq, Naeem ul Haq,et al. The Effect of Primary Laves Phase on Notch Sensitivity in Thermo-span Superalloy[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2022:11. |
| APA | Zhang, Weiwei.,Tan, Yuanguo.,Tariq, Naeem ul Haq.,Si, Tianxiao.,Wang, Zhiyuan.,...&Sun, Wenru.(2022).The Effect of Primary Laves Phase on Notch Sensitivity in Thermo-span Superalloy.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,11. |
| MLA | Zhang, Weiwei,et al."The Effect of Primary Laves Phase on Notch Sensitivity in Thermo-span Superalloy".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2022):11. |
入库方式： OAI收割
来源：金属研究所
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