Scripta Materialia 162, 397, 2019
Strain-magnetization effect in superelastic Ni-Mn-Ga microfiber
Yangyong Zhao, Maodong Kang, Jing Xue, Jiang Ju, Mengmeng Wang, Shubin Wang, Yong Zhang, Manuel Vázquez, Haiyan Gao, Jun Wang
doi.org/10.1016/j.scriptamat.2018.12.002
Ni-Mn-Ga microfiber with a diameter of 80 μm was produced by glass-coated melt spinning method at the laboratories of ICMM/CSIC. Its martensitic transformation and reverse transformation temperature are 279 K and 290 K, respectively. The as-cast microfiber shows nearly fully recoverable superelastic strain as large as ~10%, and perfect strain-magnetization effect, as the stress-induced martensite phase has lower initial susceptibility and higher saturation magnetization than the austenite one. This microfiber has large perspectives as non-destructive and non-contact monitor sensing material.
This article derives from the stay of Yangyong Zhao in the GNMP group in 2017 within the collaboration established with Prof. Yong Zhang from the State Key Laboratory of Advanced Metals and Materials, University of Science and Technology Beijing, China.