Elastocaloric effects in ultra-fine grained NiTi microwires processed by cold-drawing

Efficient elastocaloric cooling in shape memory alloys requires a stable superelastic behavior in which high yield strength is needed. Here Ni50.4Ti49.6 microwires with diameter 130 μm and ultra-fine grains ∼30 nm were prepared by multi-step cold-drawing and low-temperature annealing. Enhanced cycli...

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Bibliographic Details
Main Authors: Xuexi Zhang, Mingfang Qian, Xuejie Zhu, Cheng Shang, Lin Geng
Format: Article
Language:English
Published: AIP Publishing LLC 2018-03-01
Series:APL Materials
Online Access:http://dx.doi.org/10.1063/1.5021631