Enhanced superelasticity and notable elastocaloric effect of Cu71Al17.5Mn11.5 shape memory alloys by laser-based powder bed fusion

IF 4.2 Q2 ENGINEERING, MANUFACTURING

Additive manufacturing letters Pub Date : 2025-04-01 DOI:10.1016/j.addlet.2025.100281

Xiang Li , Zeming Fan , Qijie Zhai , Gang Wang , Xiang Lu , Hanyang Qian , Rui Cai , Daqiang Jiang , Jian Liu

{"title":"Enhanced superelasticity and notable elastocaloric effect of Cu71Al17.5Mn11.5 shape memory alloys by laser-based powder bed fusion","authors":"Xiang Li , Zeming Fan , Qijie Zhai , Gang Wang , Xiang Lu , Hanyang Qian , Rui Cai , Daqiang Jiang , Jian Liu","doi":"10.1016/j.addlet.2025.100281","DOIUrl":null,"url":null,"abstract":"<div><div>Cu-based shape memory alloys (SMAs) with highly oriented columnar grains and high densities are promising candidates for solid-state refrigeration. In this work, the Cu<sub>71</sub>Al<sub>17.5</sub>Mn<sub>11.5</sub> alloys with a strong 〈001〉 texture columnar grains and a high relative density were fabricated using laser-based powder bed fusion of metals (PBF-LB/M) technique. The Cu<sub>71</sub>Al<sub>17.5</sub>Mn<sub>11.5</sub> alloys exhibited enhanced superelasticity, with a superelastic strain of 6.2 %. A maximum recoverable strain of 8.5 % was achieved under 9 % compressive loading, which includes both superelastic and elastic strain components. Additionally, a notable elastocaloric temperature change of 8.0 K was achieved upon fast unloading under adiabatic conditions. The phase transformation behavior has been systematically investigated by the digital image correlation (DIC) and the transmission wide-angle X-ray diffraction measurements. The current results suggest that the additive manufacturing could be a promising route for near-net-shape high-performance Cu-based elastocaloric refrigerants.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"13 ","pages":"Article 100281"},"PeriodicalIF":4.2000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Additive manufacturing letters","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772369025000155","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}

引用次数: 0

Abstract

Cu-based shape memory alloys (SMAs) with highly oriented columnar grains and high densities are promising candidates for solid-state refrigeration. In this work, the Cu₇₁Al_17.5Mn_11.5 alloys with a strong 〈001〉 texture columnar grains and a high relative density were fabricated using laser-based powder bed fusion of metals (PBF-LB/M) technique. The Cu₇₁Al_17.5Mn_11.5 alloys exhibited enhanced superelasticity, with a superelastic strain of 6.2 %. A maximum recoverable strain of 8.5 % was achieved under 9 % compressive loading, which includes both superelastic and elastic strain components. Additionally, a notable elastocaloric temperature change of 8.0 K was achieved upon fast unloading under adiabatic conditions. The phase transformation behavior has been systematically investigated by the digital image correlation (DIC) and the transmission wide-angle X-ray diffraction measurements. The current results suggest that the additive manufacturing could be a promising route for near-net-shape high-performance Cu-based elastocaloric refrigerants.

Abstract Image