| Investigation on the incipient plasticity of (001)-oriented CoCrFeNi micropillar | |
| Zhang, Qiang1; Rui SS(芮少石)2; Song, Ligang1; Pei, Yaowu1; Zhu, Fei1; Ma, Xianfeng1 | |
| Corresponding Author | Zhu, Fei([email protected]) ; Ma, Xianfeng([email protected]) |
| Source Publication | SCRIPTA MATERIALIA
 |
| 2024-11-01 | |
| Volume | 252Pages:6 |
| ISSN | 1359-6462 |
| Abstract | Micro-level mechanical tests are of extreme sensitivity to the initial internal state and early response of materials. The stability of elastic property and yield behavior of macro-level polycrystal specimens fade significantly under micro-level uniaxial loading state. In this study, the incipient plasticity and underlying mechanisms of mediumentropy alloy CoCrFeNi were investigated by in-situ micropillar compression. Stress fluctuations at elastic stage of (001)-oriented pillar were observed in the stress-strain curves and then evidenced by TEM characterization as the activation of leading partial dislocations. The discreteness of yield strength was thus attributed to the impediment of pre-formed stacking faults. Furthermore, a model illustrating the incipient plasticity and its consequences on micropillar compression tests was proposed after an evaluation on twinning stress of alloys with low stacking fault energy. |
| Keyword | Single cyrstal Micro-pillar compression Incipient plasticity In -situ test |
| DOI | 10.1016/j.scriptamat.2024.116250 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001262598900001 |
| WOS Keyword | HIGH-ENTROPY ALLOY ; MECHANICAL-PROPERTIES ; DEFORMATION ; STRESS ; SIZE ; MICROSTRUCTURE ; NUCLEATION ; DEPENDENCE ; STRENGTH |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | Guangdong Major Project of Basic and Applied Basic Research[2019B030302011] ; National Natural Science Foundation of China[U2032143] ; National Natural Science Foundation of China[12305325] ; Guangdong Basic and Applied Basic Research[2022A1515110802] ; Guangdong Basic and Applied Basic Research[2023A1515011596] ; Guangdong Provincial International Sci & Tech Cooperation Program[2020A0505020005] ; Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China ; Zhuhai-Hong Kong -Macao Science and Technology Cooperation Program of Zhuhai City, China[ZH2207 - 7301-210009-P-WC] ; Sinoma Institute of Materials Research (Guang Zhou) Co., Ltd (SIMR) |
| Funding Organization | Guangdong Major Project of Basic and Applied Basic Research ; National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research ; Guangdong Provincial International Sci & Tech Cooperation Program ; Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China ; Zhuhai-Hong Kong -Macao Science and Technology Cooperation Program of Zhuhai City, China ; Sinoma Institute of Materials Research (Guang Zhou) Co., Ltd (SIMR) |
| Classification | 一类 |
| Ranking | 2 |
| Contributor | Zhu, Fei ; Ma, Xianfeng |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95895 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Guangdong, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Qiang,Rui SS,Song, Ligang,et al. Investigation on the incipient plasticity of (001)-oriented CoCrFeNi micropillar[J]. SCRIPTA MATERIALIA,2024,252:6.Rp_Au:Zhu, Fei, Ma, Xianfeng |
| APA | Zhang, Qiang,芮少石,Song, Ligang,Pei, Yaowu,Zhu, Fei,&Ma, Xianfeng.(2024).Investigation on the incipient plasticity of (001)-oriented CoCrFeNi micropillar.SCRIPTA MATERIALIA,252,6. |
| MLA | Zhang, Qiang,et al."Investigation on the incipient plasticity of (001)-oriented CoCrFeNi micropillar".SCRIPTA MATERIALIA 252(2024):6. |
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