Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8000613 | Journal of Alloys and Compounds | 2015 | 7 Pages |
Abstract
The microstructures, martensitic transformation behaviors, mechanical and shape memory properties of two types Ni-Mn-Fe-In shape memory alloys, including Ni50Mn36+xFe8In6âx (x = 0 and 2) and Ni52Mn34+yFe8In6ây (y = 0 and 2), were investigated. Typical two-phase microstructure consisted of the tetragonal martensite and fcc γ phase is observed for all the studied alloys. The results show that the mechanical properties are remarkably improved due to the presence of a mass of γ phase. The martensitic transformation is confirmed to be fully reversible, and the transformation temperatures almost linearly increase with the increase of e/a value of martensite. The transformation hysteresis widths of the studied alloys are very small, which are responsible for good shape memory effects of the alloys. Results further show that two-phase Ni-Mn-Fe-In alloys exhibit much better shape memory properties than those reported other two-phase shape memory alloys while the alloys have equal amount of γ phase.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
S.Y. Yang, Y.D. Liu, C.P. Wang, Y. Lu, J.M. Wang, Z. Shi, X.J. Liu,