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Design in Ni–Mn–In magnetic shape-memory alloy using compositional maps

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3 Author(s)
Huang, Y.J. ; School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China ; Hu, Q.D. ; Li, J.G.

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Using empirical data, a map of composition versus magnetic properties was developed to design Ni-Mn-In magnetic shape-memory alloys. By the aid of this composition map, five alloys with desired properties were designed. A linear composition dependence of martensitic transformation temperature (Tm) and alloy was revealed. A transformation from austenite to martensite could be achieved at an electron concentration of ∼7.9. As such, a series of magnetic shape-memory alloys, which work at different conditions, can be designated under the guidance of a series of contour maps derived from Tm and thermal hysteresis.

Published in:

Applied Physics Letters  (Volume:101 ,  Issue: 22 )