The effects of the addition of quaternary element, Co, to polycrystalline NiMnGa alloys on their magnetic and shape memory properties have been investigated. NiCoMnGa polycrystalline alloys have been found to demonstrate good shape memory and superelasticity behavior under compression at temperatures greater than 100 C with about 3% transformation strain and low-temperature hysteresis. It is also possible to train the material to demonstrate a large two-way shape memory effect.
|Number of pages
|Journal of Materials Engineering and Performance
|Published - Oct 2013
Bibliographical noteFunding Information:
The authors gratefully acknowledge the financial support from National Science Foundation (NSF) CMMI Award #0954541. Financial support for a student researcher was provided by the KY NSF EPSCoR Program and NSF Award #0814194. This study at SIUC was supported by the Office of Basic Energy Sciences, Material Sciences Division of the U.S. Department of Energy (Contract No. DE-FG02-06ER46291).
- magnetic measurements
- magnetically ordered materials
- martensitic transformations
- metals and alloys
- shape memory
ASJC Scopus subject areas
- Materials Science (all)
- Mechanics of Materials
- Mechanical Engineering