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| Large elastocaloric effect in Ti-Ni shape memory alloy below austenite finish temperature | |
| Luo, Xiao-Hua; Ren, Wei-Jun; Jin, Wei; Zhang, Zhi-Dong; Ren, WJ (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China. | |
| 2017-03-01 | |
| Source Publication | CHINESE PHYSICS B
 |
| ISSN | 1674-1056 |
| Volume | 26Issue:3Pages:- |
| Abstract | Solid refrigeration technology based on the elastocaloric effect has a great potential alternative to the conventional vapor compression cooling. Here we report the large elastocaloric effect in Ti-Ni (50 at%) shape memory alloy below its austenite finish temperature A(f) under different strain. Both Maxwell's and Clausius-Clapeyron equations are used to estimate the entropy change. The strain-induced entropy change increases with raising the strain and gets a maximum value at a few kelvins below A(f). The maximum entropy changes Delta S-max are -20.44 and -53.70 J/kg.K, respectively for 1% and 2% strain changes. Large entropy change may be obtained down to 20 K below A(f). The temperature of the maximum entropy change remains unchanged before the plastic deformation appears but moves towards low temperature when the plastic deformation happens.; Solid refrigeration technology based on the elastocaloric effect has a great potential alternative to the conventional vapor compression cooling. Here we report the large elastocaloric effect in Ti-Ni (50 at%) shape memory alloy below its austenite finish temperature A(f) under different strain. Both Maxwell's and Clausius-Clapeyron equations are used to estimate the entropy change. The strain-induced entropy change increases with raising the strain and gets a maximum value at a few kelvins below A(f). The maximum entropy changes Delta S-max are -20.44 and -53.70 J/kg.K, respectively for 1% and 2% strain changes. Large entropy change may be obtained down to 20 K below A(f). The temperature of the maximum entropy change remains unchanged before the plastic deformation appears but moves towards low temperature when the plastic deformation happens. |
| description.department | [luo, xiao-hua ; ren, wei-jun ; zhang, zhi-dong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [jin, wei] chinese acad sci, inst met res, shenyang 110016, peoples r china |
| Keyword | Elastocaloric Effect Martensitic Transformation Shape Memory Alloys |
| Subject Area | Physics, Multidisciplinary |
| Funding Organization | National Natural Science Foundation of China [51671192, 51531008]; Chinese Academy of Sciences [KJZD-EW-M05] |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/78263 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ren, WJ (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| Recommended Citation GB/T 7714 | Luo, Xiao-Hua,Ren, Wei-Jun,Jin, Wei,et al. Large elastocaloric effect in Ti-Ni shape memory alloy below austenite finish temperature[J]. CHINESE PHYSICS B,2017,26(3):-. |
| APA | Luo, Xiao-Hua,Ren, Wei-Jun,Jin, Wei,Zhang, Zhi-Dong,&Ren, WJ .(2017).Large elastocaloric effect in Ti-Ni shape memory alloy below austenite finish temperature.CHINESE PHYSICS B,26(3),-. |
| MLA | Luo, Xiao-Hua,et al."Large elastocaloric effect in Ti-Ni shape memory alloy below austenite finish temperature".CHINESE PHYSICS B 26.3(2017):-. |
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