Phase Transformation and Microstructures in Ni and Cu Base Ferromagnetic Shape Memory Alloys

Takuro Kushima; Koichi Tsuchiya; Yasuyoshi Sho; Takafumi Yamada; Yoshikazu Todaka; Minoru Umemoto

doi:10.4028/www.scientific.net/MSF.539-543.3157

Paper Titles

Computer Simulation on Formation of Precision Forgings of Titanium Alloy and Superalloy
p.3130

Properties of Boron Fiber Reinforced Aluminum Matrix Composites Fabricated by Pulsed Current Hot Pressing (PCHP)
p.3139

Self-Healing of Creep Cavities by Boron Segregation and Boron Nitride Precipitation Autonomously Developed during High Temperature Use
p.3145

TiNi Shape Memory Alloys for MEMS: Thin Film Deposition, Thermophysical Properties and Laser Micromachining Characteristics
p.3151

Phase Transformation and Microstructures in Ni and Cu Base Ferromagnetic Shape Memory Alloys
p.3157

Effect of Aging on Microstructure and Martensitic Transformation in Ti-Zr-Ni Shape Memory Alloys
p.3163

Functionally Graded Ti-Ni Shape Memory Alloys
p.3169

Mechanical Properties of Fe-Pd Ferromagnetic Shape Memory Alloy Thin Films Prepared by Dual Source DC Sputtering
p.3173

The Effect of Crucible Configuration on Joule and Pinch Effects in EMCC Process of Silicon
p.3179

HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Phase Transformation and Microstructures in Ni and...

Phase Transformation and Microstructures in Ni and Cu Base Ferromagnetic Shape Memory Alloys

Abstract:

Effect of chemical composition was investigated on martensitic transformation temperatures, Curie temperature, magnetization and microstructures for Ni-(Mn, Fe, Co)-Ga and Cu-Mn-Ga systems. In the Ni-(Mn, Fe, Co)-Ga alloys, which is a modification of Ni-Mn-Ga systems, the Af and TC over 400 K were achieved. Cu-Mn-Ga alloy exhibited shape memory effect at temperatures above 373 K and had TC over 400 K. Furthermore, Cu-Mn-Ga exhibits good ductility even in polycrystalline condition unlike the case of Ni-Mn-Ga. Effect of addition of the fourth element to improve the magnetic property is under investigation.