| Evaluation of Radiation Response in CoCrFeCuNi High-Entropy Alloys | |
Wang Y ; Zhang K(张坤); Feng YH(冯义辉); Li YS; Tang WQ; Wei BC(魏炳忱)
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| Source Publication | ENTROPY
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| 2018-11-01 | |
| Volume | 20Issue:11Pages:Ar-835 |
| ISSN | 1099-4300 |
| Abstract | CoCrFeCuNi high-entropy alloys (HEAs) prepared by arc melting were irradiated with a 100 keV He+ ion beam. Volume swelling and hardening induced by irradiation were evaluated. When the dose reached 5.0 x 10(17) ions/cm(2), the Cu-rich phases exhibited more severe volume swelling compared with the matrix phases. This result indicated that the Cu-rich phases were favorable sites for the nucleation and gathering of He bubbles. X-ray diffraction indicated that all diffraction peak intensities decreased regularly. This reduction suggested loosening of the irradiated layer, thereby reducing crystallinity, under He+ ion irradiation. The Nix-Gao model was used to fit the measured hardness in order to obtain a hardness value H-0 that excludes the indentation size effect. At ion doses of 2.5 x 10(17) ions/cm(2) and 5.0 x 10(17) ions/cm(2), the HEAs showed obvious hardening, which could be attributed to the formation of large amounts of irradiation defects. At the ion dose of 1.0 x 10(18) ions/cm(2), hardening was reduced, owing to the exfoliation of the original irradiation layer, combined with recovery induced by long-term thermal spike. This study is important to explore the potential uses of HEAs under extreme irradiation conditions. |
| Keyword | high-entropy alloy ion irradiation hardening behavior volume swelling |
| DOI | 10.3390/e20110835 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000451308800027 |
| WOS Keyword | PRINCIPAL-ELEMENT ALLOYS ; ION-IRRADIATION ; FATIGUE BEHAVIOR ; SOLID-SOLUTION ; VISCOUS-FLOW ; HELIUM ; NANOINDENTATION ; MICROSTRUCTURE ; TEMPERATURE ; RELAXATION |
| WOS Research Area | Physics, Multidisciplinary |
| WOS Subject | Physics |
| Funding Organization | National Natural Science Foundation of China [51401028, 51271193, 11402277, 11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040303] |
| Classification | 二类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/78153 |
| Collection | 微重力重点实验室 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Wang Y,Zhang K,Feng YH,et al. Evaluation of Radiation Response in CoCrFeCuNi High-Entropy Alloys[J]. ENTROPY,2018,20,11,:Ar-835. |
| APA | Wang Y,张坤,冯义辉,Li YS,Tang WQ,&魏炳忱.(2018).Evaluation of Radiation Response in CoCrFeCuNi High-Entropy Alloys.ENTROPY,20(11),Ar-835. |
| MLA | Wang Y,et al."Evaluation of Radiation Response in CoCrFeCuNi High-Entropy Alloys".ENTROPY 20.11(2018):Ar-835. |
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| irJ2018082.pdf（3503KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
| IrJ2018376.pdf（3503KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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