Martensitic transformation and elastocaloric effect of Co51.5+xV31.5-xGa17 (x=0.1, 0.2, 0.3) alloys
文献类型：期刊论文
| 作者 | He, Jing; Wei, Zhiyang; Sun, Wen; Lu, Xiang; Ma, Shengcan; Liu, Jian |
| 刊名 | INTERMETALLICS
 |
| 出版日期 | 2021 |
| 卷号 | 139 |
| 关键词 | SHAPE-MEMORY ALLOYS CO-NI-GA SUPERELASTICITY TEMPERATURES DEFORMATION STRAIN HYSTERESIS EVOLUTION DRIVEN |
| 英文摘要 | Co-V-Ga alloy, a newly discovered multifunctional material based on martensitic transformation (MT), has promising application prospects in spintronics and solid-state refrigeration fields. In this work, we investigated the MT behaviors and the elastocaloric effect (eCE) of Co51.5+xV31.5-xGa17 (x = 0.1, 0.2, 0.3) alloys. The alloys undergo a MT from paramagnetic austenite to paramagnetic martensite, accompanying by a large latent heat (about 6-9 J g-1). The MT temperature increases with the increase of the ratio of Co to V. The digital image correlation (DIC) combined with infrared thermography (IR) techniques were utilized to in situ characterize the stress-induced MT and temperature change of the sample. For the sample of x = 0.2, at a testing temperature of 301 K, it heats with a giant adiabatic temperature change up to 13.4 K upon loading, while cools only 2.4 K when stress releasing, showing an irreversible eCE. Raising the test temperature (319, 327 and 333 K) can greatly improve the reversibility of the eCE. Such an asymmetric elastocaloric temperature change at 301 K is closely related to the irreversibility of stress-induced MT, which can be attributed to several factors including the selfcooling effect, heat dissipative mechanism and the valence bond structure of Co-V-Ga alloys. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21283]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Wei, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China. 2.Ma, SC (corresponding author), Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Jiangxi Key Lab Rare Earth Magnet Mat & Devices, Ganzhou 341000, Peoples R China. 3.Wei, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | He, Jing,Wei, Zhiyang,Sun, Wen,et al. Martensitic transformation and elastocaloric effect of Co51.5+xV31.5-xGa17 (x=0.1, 0.2, 0.3) alloys[J]. INTERMETALLICS,2021,139. |
| APA | He, Jing,Wei, Zhiyang,Sun, Wen,Lu, Xiang,Ma, Shengcan,&Liu, Jian.(2021).Martensitic transformation and elastocaloric effect of Co51.5+xV31.5-xGa17 (x=0.1, 0.2, 0.3) alloys.INTERMETALLICS,139. |
| MLA | He, Jing,et al."Martensitic transformation and elastocaloric effect of Co51.5+xV31.5-xGa17 (x=0.1, 0.2, 0.3) alloys".INTERMETALLICS 139(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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