An 8 K elastocaloric temperature change induced by 1.3% transformation strain in Ni₄₄Mn_{45 − x}Sn₁₁Cu_x alloys

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• 作者：Yang Li^a ; ^b ; ^c ; Wen Sun^b ; ^c ; Dewei Zhao^b ; ^c ; ^d ; Hui Xu^a ; ^{huixu8888@shu.edu.cn} ; Jian Liu^b ; ^c ; ^{liujian@nimte.ac.cn}
• 关键词：Elastocaloric effect ; Martensitic transformation ; Ni-Mn-Sn-Cu
• 刊名：Scripta Materialia
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：130
• 期：Complete
• 页码：278-282
• 全文大小：1001 K
• 卷排序：130

文摘

The influence of Cu substitution for Mn on martensitic transformation, superelasticity and associated elastocaloric effect in Ni44Mn45 − xSn11Cux (x = 0–4) magnetic shape memory alloys has been investigated. The transformation temperatures were tuned around room temperature by increasing the Cu content. Ni44Mn41Sn11Cu4 exhibits a giant adiabatic cooling of − 8 K at a small transformation strain of 1.3%, indicating it as a promising candidate material for elastocaloric refrigeration.