Enhanced elastocaloric effect and refrigeration properties in a Si-doped Ni-Mn-In shape memory alloy  

作　　者：Zhenzhuang Li Zongbin Li Yunzhuo Lu Xing Lu Liang Zuo 

机构地区：[1]School of Material Science and Engineering,Dalian Jiaotong University,Dalian 116028,China [2]Key Laboratory for Anisotropy and Texture of Materials,Ministry of Education,School of Material Science and Engineering,Northeastern University,Shenyang 110819,China

出　　处：《Journal of Materials Science & Technology》2022年第22期167-173,共7页材料科学技术（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.51771048,52171005);the Liaoning Revitalization Talents Program(Nos.XLYC1907082,XLYC1907046,XLYC1802023).

摘　　要：We demonstrate giant elastocaloric effect and outstanding refrigeration capacity in a <0 0 1>A textured Ni_(50)Mn_(35)In_(13)Si_(2) alloy with large transformation entropy change △S_(tr) and low-hysteresis △T_(hys). On unloading from a relatively low compressive stress of 300 MPa, giant adiabatic temperature variation △T_(ad) up to –17.7 K was realized. Moreover, large stress-induced entropy change △S_(σ) of 25.9 J kg^(–1)K^(–1) andgiant refrigeration capacity RC_(σ) of 1330 J kg^(–1) were achieved under the compressive stress of 300 MPa.Simultaneously achieving giant △T_(ad) and outstanding refrigeration capacity indicates that this alloy ispromising to be the candidate material for elastocaloric refrigeration.

关 键 词：Ni-Mn-In alloys Directional solidification Elastocaloric effect Martensitic transformation 

分 类 号：TG139.6[一般工业技术—材料科学与工程]