Entropy change linked to the magnetic field induced martensitic transformation in a Ni–Mn–In–Co shape memory alloy

2010 ◽  
Vol 107 (5) ◽  
pp. 053501 ◽  
Author(s):  
V. Recarte ◽  
J. I. Pérez-Landazábal ◽  
S. Kustov ◽  
E. Cesari
Keyword(s):  
Magnetic Field ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Entropy Change ◽  
The Magnetic Field

Experimental Study on Reversibility of Magnetically Controlled Shape Memory Alloy

2010 ◽  
Vol 44-47 ◽  
pp. 3100-3104 ◽  
Author(s):  
Ying Li Ding ◽  
Yong Zhi Cai ◽  
Cheng Wu Lin
Keyword(s):  
Magnetic Field ◽  
Experimental Study ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Dynamic Response ◽  
Shape Memory ◽  
High Sensitivity ◽  
Vibration Detection ◽  
Dynamic Reversibility ◽  
The Magnetic Field

This paper reports an experiment equipment which is used as reversibility research of magnetically controlled shape memory alloy (MSMA). The vibration detection is done based on dynamic reversibility of MSMA. The results show that MSMA will induce Martensitic transformation in the magnetic field. The characteristics of rapid dynamic response, high sensitivity and reversibility are found. The material is of a bright future of application in sensors and self-sensing actuator (SSA) field.

Effect of Constant-Strain Aging on Microstructure, Martensitic Transformation and Magnetic Property of Ni53Mn23.5Ga23.5 Ferromagnetic Shape Memory Alloy

2014 ◽  
Vol 1015 ◽  
pp. 114-118
Author(s):  
G.F. Dong
Keyword(s):  
Magnetic Field ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Curie Temperature ◽  
Shape Memory ◽  
Aged Sample ◽  
Ferromagnetic Shape Memory Alloy ◽  
Solution Treated ◽  
Treated Sample ◽  
Ferromagnetic Shape Memory

The effect of constant-strain aged and unaged on microstructure, martensite transformation, Curie temperature and magnetic field induction strain of Ni53Mn23.5Ga23.5ferromagnetic shape memory alloy was investigated in detail. The results show that reverse martensitic transformation temperatures of constant-strain aged sample slowly decrease, which martensitic transformation temperatures almost unchanged. In addition, Curie temperature of constant-strain aged sample is almost maintains consistent with solution-treated sample, but slowly increases saturation magnetization of constant-strain aged sample than solution-treated sample. Finally, the sample of constant-strain aged sample showed a larger magnetic field induction strain of 402 ppm.

Magnetic field induced martensitic transformation linked to the arrested austenite in a Ni-Mn-In-Co shape memory alloy

2011 ◽  
Vol 109 (9) ◽  
pp. 093515 ◽  
Author(s):  
J. I. Pérez-Landazábal ◽  
V. Recarte ◽  
V. Sánchez-Alarcos ◽  
C. Gómez-Polo ◽  
S. Kustov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory

Martensitic Transformation and Magnetic-Field-Induced Strain in Magnetic Shape Memory Alloy NiMnGa Melt-Spun Ribbon

2005 ◽  
Vol 475-479 ◽  
pp. 2009-2012 ◽  
Author(s):  
Shi Hai Guo ◽  
Yang Huan Zhang ◽  
Bai Yun Quan ◽  
Jian Liang Li ◽  
Xin Lin Wang
Keyword(s):  
Magnetic Field ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Internal Stress ◽  
Melt Spinning ◽  
Martensitic Transformation Temperature ◽  
Magnetic Shape Memory ◽  
Magnetic Shape Memory Alloy ◽  
Melt Spun

A non-stoichiometric polycrystalline Ni50Mn27Ga23 magnetic shape memory alloy was prepared by melt-spinning technology. The effects of melt-spinning on the martensitic transformation and magnetic-field-induced strain (MFIS) of the melt-spun ribbon were investigated. The experimental results show that the melt-spun ribbon undergoes the thermal-elastic martensitic transformation and exhibits the thermo-elastic shape memory effect. But the martensitic transformation temperature decreases and Curie temperature remains unchanged. A particular internal stress induced by melt-spinning made a texture structure in the melt-spun ribbon, which made the melt-spun ribbon obtain larger transition-induced strain and MFIS. The internal stress was released under cycling of magnetic field. This resulted in a decrease of MFIS of the melt-spun ribbon.

scholarly journals Long-Range Atomic Order and Entropy Change at the Martensitic Transformation in a Ni-Mn-In-Co Metamagnetic Shape Memory Alloy

Entropy ◽  
2014 ◽  
Vol 16 (5) ◽  
pp. 2756-2767 ◽  
Author(s):  
Vicente Sánchez-Alarcos ◽  
Vicente Recarte ◽  
José Pérez-Landazábal ◽  
Eduard Cesari ◽  
José Rodríguez-Velamazán
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Long Range ◽  
Entropy Change ◽  
Atomic Order ◽  
Range Atomic Order

Martensitic transformation and magnetic field induced effects in Ni42Co8Mn39Sn11 metamagnetic shape memory alloy

2016 ◽  
Vol 109 ◽  
pp. 170-176 ◽  
Author(s):  
P. Lázpita ◽  
M. Sasmaz ◽  
E. Cesari ◽  
J.M. Barandiarán ◽  
J. Gutiérrez ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory

Effects of High Magnetic Field and Tensile Stress on Martensitic Transformation Behavior and Microstructure At 4 K in Fe-Ni-C Alloys

1995 ◽  
Vol 398 ◽  
Author(s):  
H. Ohtsuka ◽  
K. Nagai ◽  
S. Kajiwara ◽  
H. Kitaguchi ◽  
M. Uehara
Keyword(s):  
Magnetic Field ◽  
Martensitic Transformation ◽  
Tensile Stress ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
High Magnetic Field ◽  
Constant Magnetic Field ◽  
Critical Magnetic Field ◽  
Transformation Behavior ◽  
The Magnetic Field

ABSTRACTEffects of high magnetic field and tensile stress on martensitic transformation behavior and microstructure at 4 K have been studied in Fe-31Ni-0.4C and Fe-27Ni-0.8C shape memory alloys. It was found that the critical magnetic field to induce martensitic transformation is between 7.5 T and 10 T. In the case of Fe-27Ni-0.8C, martensitic transformation is stress-induced at lower level of stress in magnetic field than in the case when no magnetic Field is applied. The amount of martensite formed by increasing the magnetic field under constant stress is larger than that formed by increasing the stress in the constant magnetic field.

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