Mechanism of notch sensitivity elimination via precipitating Laves phases at grain boundaries in a low expansion superalloy
文献类型：期刊论文
| 作者 | Zhang, Weiwei2,3; Tan, Yuanguo1; Xin, Xin2,3; Sun, Wenru2,3 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 18页码:3094-3103 |
| 关键词 | Thermo-span alloy Notch sensitivity Laves Crack propagation |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2022.03.134 |
| 通讯作者 | Xin, Xin(xxin@imr.ac.cn) ; Sun, Wenru(wrsun@imr.ac.cn) |
| 英文摘要 | The effect of Laves phase on the notch sensitivity of Thermo-Span alloy has been systematically investigated in the study via scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electron backscattered diffraction (EBSD). The results show that amounts of secondary Laves phase increase and g0 phase decrease with the dissolution of primary Laves phase. The g0 phase depletion zones are formed at the vicinity of secondary Laves phases, which are the critical factor eliminating the notch sensitivity. The g0 phase depletion zones around secondary Laves phases at grain boundaries (GBs) resulted in a decrease in GBs strength along with improvement in plasticity. Therefore, GBs can accommodate high strain localization and produce Geometrically Necessary Dislocation (GND) to coordinate incompatible deformation among neighboring grains. Thus, the resistance to crack initiation and propagation at GBs is improved. Subsequently, the accumulated strain at GBs activates multiple slip systems to further coordinate deformation between GBs and intragranular regions.& nbsp;(C) The Author(s) 2022. Published by B.V.& nbsp; |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000795544300006 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.imr.ac.cn/handle/321006/174034]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xin, Xin; Sun, Wenru |
| 作者单位 | 1.Univ Southampton, Fac Engn & Environm, Mech Engn Grp, Southampton, England 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Zhang, Weiwei,Tan, Yuanguo,Xin, Xin,et al. Mechanism of notch sensitivity elimination via precipitating Laves phases at grain boundaries in a low expansion superalloy [J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2022,18:3094-3103. |
| APA |
Zhang, Weiwei,Tan, Yuanguo,Xin, Xin,&Sun, Wenru.(2022). Mechanism of notch sensitivity elimination via precipitating Laves phases at grain boundaries in a low expansion superalloy .JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,18,3094-3103. |
| MLA |
Zhang, Weiwei,et al." Mechanism of notch sensitivity elimination via precipitating Laves phases at grain boundaries in a low expansion superalloy ".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 18(2022):3094-3103. |
入库方式： OAI收割
来源：金属研究所
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