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Influence of Cr on microstructure and elastocaloric effect in Ni-Mn-In-Co-Cr polycrystalline alloys
Shen, Ao; Sun, Wen; Zhao, Dewei; Liu, Jian
2018
发表期刊PHYSICS LETTERS A
卷号382期号:39页码:2876-2879
摘要Ni-Mn-based metamagnetic shape memory alloys have been proposed as potential elastocaloric refrigerants. The intrinsic brittleness of the alloys has limited their cooling application. Introducing a soft second phase is an effective way to reduce the brittleness. From the viewpoint of application, the effect of second phase on elastocaloric effect should be illustrated. In this paper, we have investigated the microstructure, martensitic transformation and elastocaloric effect of Ni45Mn37-xIn13Co5Crx (x = 0, 1 and 2) polycrystalline alloys. Single-phase and precipitates-containing microstructures are obtained for the undoped and doped alloys, respectively. The precipitates in Cr-doped alloys enhances the fracture strength but significantly hinders the martensitic transformation. Balancing the fracture strength and martensitic transformation, the Ni45Mn36In13Co5Cr alloy with small amount of precipitates along grain boundaries exhibits large cooling effects of 4-6 K in the temperature range of 317-353 K. (C) 2018 Elsevier B.V. All rights reserved.
关键词Shape-memory Alloys Hysteresis Single
学科领域Polymer Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17135
专题2018专题
推荐引用方式
GB/T 7714
Shen, Ao,Sun, Wen,Zhao, Dewei,et al. Influence of Cr on microstructure and elastocaloric effect in Ni-Mn-In-Co-Cr polycrystalline alloys[J]. PHYSICS LETTERS A,2018,382(39):2876-2879.
APA Shen, Ao,Sun, Wen,Zhao, Dewei,&Liu, Jian.(2018).Influence of Cr on microstructure and elastocaloric effect in Ni-Mn-In-Co-Cr polycrystalline alloys.PHYSICS LETTERS A,382(39),2876-2879.
MLA Shen, Ao,et al."Influence of Cr on microstructure and elastocaloric effect in Ni-Mn-In-Co-Cr polycrystalline alloys".PHYSICS LETTERS A 382.39(2018):2876-2879.
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