Microstructure, martensitic transformation and excellent shape memory effect of Ga-alloyed Cu–Al–Mn–Fe shape-memory single crystal

Shiwei Zheng; Shuaishuai Chen; Shen Hong; Zhongliang Su; Jinbin Zhang; Laisen Wang; Cuiping Wang; Shuiyuan Yang

Journal of Science: Advanced Materials and Devices (Sep 2022)

Microstructure, martensitic transformation and excellent shape memory effect of Ga-alloyed Cu–Al–Mn–Fe shape-memory single crystal

Shiwei Zheng,
Shuaishuai Chen,
Shen Hong,
Zhongliang Su,
Jinbin Zhang,
Laisen Wang,
Cuiping Wang,
Shuiyuan Yang

Affiliations

Shiwei Zheng: College of Materials of Xiamen University, Xiamen 361005, PR China; Shenzhen Research Institute of Xiamen University, Shenzhen 518055, PR China; Fujian Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, PR China
Shuaishuai Chen: College of Materials of Xiamen University, Xiamen 361005, PR China; Shenzhen Research Institute of Xiamen University, Shenzhen 518055, PR China; Fujian Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, PR China
Shen Hong: College of Materials of Xiamen University, Xiamen 361005, PR China; Shenzhen Research Institute of Xiamen University, Shenzhen 518055, PR China; Fujian Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, PR China
Zhongliang Su: Xiamen Products Quality Supervision & Inspection Institute, Xiamen 361005, PR China
Jinbin Zhang: College of Materials of Xiamen University, Xiamen 361005, PR China; Shenzhen Research Institute of Xiamen University, Shenzhen 518055, PR China; Fujian Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, PR China; Corresponding author. College of Materials of Xiamen University, Xiamen 361005, PR China.
Laisen Wang: Fujian Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, PR China
Cuiping Wang: Fujian Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, PR China
Shuiyuan Yang: College of Materials of Xiamen University, Xiamen 361005, PR China; Shenzhen Research Institute of Xiamen University, Shenzhen 518055, PR China; Fujian Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, PR China; Corresponding author. College of Materials of Xiamen University, Xiamen 361005, PR China.

Journal volume & issue: Vol. 7, no. 3
p. 100448

Abstract

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A Cu–10Al–6Mn–3Fe–4Ga (wt.%) single crystal was simply prepared, and its microstructure, reversible martensitic transformation, mechanical and SME properties were investigated. The results show that this single crystal consists of dominant 2H martensite retained L21 parent and fine Fe-rich nanoparticles. Its reversible martensitic transformation temperatures are respectively 313 K (Ms), 299 K (Mf), 339 K (As), and 354 K (Af), which are suitable for practical applications. A large stress platform with a strain of approximately 8% was associated with the reorientation of existing martensite and stabilization of stress-induced martensite. Furthermore, full shape recovery characteristics are obtained all the time while changing the pre-strains from 6% to 11%. The maximum shape memory effect is up to 9.2% with a 100% shape recovery rate.

Published in Journal of Science: Advanced Materials and Devices

ISSN: 2468-2284 (Print); 2468-2179 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/journal-of-science-advanced-materials-and-devices

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