Excellent elastocaloric and mechanical performance in Mn-doped Co-V-Ga as-cast polycrystalline alloy with simple preparation

doi:10.1016/j.jmrt.2023.12.034

IMR OpenIR

	Excellent elastocaloric and mechanical performance in Mn-doped Co-V-Ga as-cast polycrystalline alloy with simple preparation
	Yang, Jie 1; Tan, Changlong 1; Liu, Rui 2; Wang, Xiaochuan 1; Liu, Yang 1; Zhao, Wenbin 1; Li, Jian 1; Tian, Xiaohua 3; Zhao, Lei 1; Zhang, Kun 4
通讯作者	Tan, Changlong(changlongtan@hrbust.edu.cn) ; Zhang, Kun(kzhang@imr.ac.cn)
	2024
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	28 页码:655-667
摘要	With the rapid development of solid-state refrigeration technology, elastocaloric materials face higher re-quirements, such as a higher elastocaloric effect (eCE), better mechanical properties, and simpler and faster large-scale preparation. In this work, we propose a composition design strategy for Mn-doped Co-V-Ga shape memory alloys, which can enhance both the eCE and the mechanical properties. We combine first-principles calculations and experiments to demonstrate this strategy. Our results reveal that the lattice distortion caused by the difference in atomic radii produces a solid-solution-strengthening effect within the alloy, impeding dislocation motion and significantly improving the mechanical properties. Through composition optimization, the low-cost Co51.7V31.3Ga14.75Mn2.25 as-cast polycrystalline alloy exhibits a large adiabatic temperature change (ATad) of-11.2 K at room temperature, while its maximum compressive strength and strain can reach up to 1859 MPa and 26% at room temperature, respectively. Importantly, the alloy exhibits excellent cycle stability, and its ATad does not decay after 100 loading and unloading cycles, indicating that it has the potential for practical application. Further comparison with the annealed sample shows that the secondary defects deteriorate the ATad of the alloy. Our research provides an effective strategy for the simple, rapid and large-scale production of as-cast eCE alloys.
关键词	Elastocaloric effects Shape memory alloys Stress -induced martensitic phase transformation Mechanical properties
资助者	National Natural Science Foundation of China ; Hei- longjiang Provincial Natural Science Foundation of China
DOI	10.1016/j.jmrt.2023.12.034
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52271172] ; National Natural Science Foundation of China[52001101] ; National Natural Science Foundation of China[51971085] ; Hei- longjiang Provincial Natural Science Foundation of China[YQ2022112]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001133900200001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183046
专题	中国科学院金属研究所
通讯作者	Tan, Changlong; Zhang, Kun
作者单位	1.Harbin Univ Sci & Technol, Sch Mat Sci & Chem Engn, Harbin 150080, Peoples R China 2.Harbin Univ Sci & Technol, Sch Sci, Harbin 150080, Peoples R China 3.Harbin Univ Sci & Technol, Sch Elect & Elect Engn, Harbin 150080, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, Jie,Tan, Changlong,Liu, Rui,et al. Excellent elastocaloric and mechanical performance in Mn-doped Co-V-Ga as-cast polycrystalline alloy with simple preparation[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,28:655-667.
APA	Yang, Jie.,Tan, Changlong.,Liu, Rui.,Wang, Xiaochuan.,Liu, Yang.,...&Zhang, Kun.(2024).Excellent elastocaloric and mechanical performance in Mn-doped Co-V-Ga as-cast polycrystalline alloy with simple preparation.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,28,655-667.
MLA	Yang, Jie,et al."Excellent elastocaloric and mechanical performance in Mn-doped Co-V-Ga as-cast polycrystalline alloy with simple preparation".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 28(2024):655-667.