Microstructural characterization of Ni-Mn-Ga ferromagnetic shape memory alloy powders

2004 ◽  
Vol 95 (11) ◽  
pp. 6954-6956 ◽  
Author(s):  
Virgil C. Solomon ◽  
David J. Smith ◽  
YunJun Tang ◽  
Ami E. Berkowitz
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Microstructural Characterization ◽  
Ferromagnetic Shape Memory Alloy ◽  
Ferromagnetic Shape Memory

Growth and characterization of ferromagnetic shape memory alloy Co50Ni20FeGa29 single crystals

2006 ◽  
Vol 290 (2) ◽  
pp. 626-630 ◽  
Author(s):  
X.F. Dai ◽  
H.Y. Wang ◽  
L.J. Chen ◽  
X.F. Duan ◽  
J.L. Chen ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Single Crystals ◽  
Ferromagnetic Shape Memory Alloy ◽  
Ferromagnetic Shape Memory

Ferroic domain characterization of Ni55Mn20.6Ga24.4 ferromagnetic shape memory alloy

2011 ◽  
Vol 21 (9) ◽  
pp. 2015-2019 ◽  
Author(s):  
Hong-zhang SONG ◽  
Hua-rong ZENG ◽  
Yong-xiang LI ◽  
Qing-rui YIN ◽  
Xing HU
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Ferromagnetic Shape Memory Alloy ◽  
Ferromagnetic Shape Memory

scholarly journals Physical Characterization of Sintered NiMnGa Ferromagnetic Shape Memory Alloy

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4806
Author(s):  
Francesca Villa ◽  
Adelaide Nespoli ◽  
Carlo Fanciulli ◽  
Francesca Passaretti ◽  
Elena Villa
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Low Cost ◽  
Material Behavior ◽  
Powder Size ◽  
Ferromagnetic Shape Memory Alloy ◽  
Cast Material ◽  
Starting Point ◽  
Ferromagnetic Shape Memory

The present work focused on the microstructural, thermal, electrical, and damping characterization of NiMnGa samples produced through a powder pressing and a sintering process; the effect of sintering times and of the starting powder size were evaluated. Moreover, an observation of the evolution of martensitic transformation typical of NiMnGa ferromagnetic shape memory alloy was conducted in comparison with the cast material behavior and in correlation with the material densification. The optimum powder size and sintering time for the process, i.e., 50 µm or lower and 72 h, were identified considering the investigated physical properties of the sintered samples in comparison to the cast material. The corresponding sample showed the best compromise between density, thermal and electrical properties, and damping and functional behaviour. In general, the outcomes of this study could be the basis of a useful tool for production processes that include a sintering step as well as being a starting point for the evaluation of an alternative low cost fabrication method of this alloy.

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