scholarly journals Martensitic transition and magnetoresistance in a Cu-Al-Mn shape-memory alloy: Influence of ageing

2002 ◽  
Vol 66 (5) ◽  
Author(s):  
Jordi Marcos ◽  
Antoni Planes ◽  
Lluís Mañosa ◽  
Amílcar Labarta ◽  
Bart Jan Hattink
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Martensitic Transition

Magnetic and transport properties of (   ) Ni35Co35Al30ferromagnetic shape memory alloy across the martensitic transition

2003 ◽  
Vol 36 (12) ◽  
pp. 1366-1370 ◽  
Author(s):  
Kanwaljeet S Sokhey ◽  
Meghmalhar Manekar ◽  
M K Chattopadhyay ◽  
Rakesh Kaul ◽  
S B Roy ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Transport Properties ◽  
Martensitic Transition

Ultrasound-induced martensitic transition in ferromagnetic Ni2.15Mn0.81Fe0.04Ga shape memory alloy

2004 ◽  
Vol 272-276 ◽  
pp. 2025-2026 ◽  
Author(s):  
V. Buchelnikov ◽  
I. Dikshtein ◽  
R. Grechishkin ◽  
T. Khudoverdyan ◽  
V. Koledov ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Martensitic Transition

Large and reversible elastocaloric effect near room temperature in a Ga-doped Ni–Mn–In metamagnetic shape-memory alloy

2017 ◽  
Vol 10 (01) ◽  
pp. 1740007 ◽  
Author(s):  
Juan-Pablo Camarillo ◽  
Christian-Omar Aguilar-Ortiz ◽  
Horacio Flores-Zúñiga ◽  
David Ríos-Jara ◽  
Daniel-Enrique Soto-Parra ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Room Temperature ◽  
Entropy Change ◽  
Martensitic Transition ◽  
Ferromagnetic Shape Memory Alloy ◽  
Temperature Changes ◽  
Elastocaloric Effect ◽  
Magnetocaloric Materials ◽  
Ferromagnetic Shape Memory

We report a giant elastocaloric effect near room temperature in a polycrystalline Ga-doped Ni–Mn–In ferromagnetic shape-memory alloy. The elastocaloric effect has been quantified by measuring both isothermal stress-induced entropy changes and adiabatic stress-induced temperature changes. A reproducible maximum entropy change, [Formula: see text] 25 [Formula: see text][Formula: see text][Formula: see text], upon cycling across the martensitic transition was obtained by application of a compressive stress of 100[Formula: see text]MPa. The corresponding maximum amount of cooling, [Formula: see text][Formula: see text]K, was measured when this stress was rapidly removed. These values are comparable with those reported for giant magnetocaloric materials, which are induced by application and release of a high magnetic field. Therefore, the studied material is a good candidate to be used in solid-state refrigeration devices based on the elastocaloric effect.

Neutron Diffraction Study of a CuAlBe Shape Memory Alloy

2011 ◽  
Vol 172-174 ◽  
pp. 178-183 ◽  
Author(s):  
Matthieu Dubois ◽  
Marie Hélène Mathon ◽  
Vincent Klosek ◽  
Gilles Andre ◽  
Alain Lodini
Keyword(s):  
Neutron Diffraction ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Texture Evolution ◽  
Neutron Diffraction Study ◽  
Raw Material ◽  
Martensitic Transition ◽  
Transition Temperatures ◽  
Austenitic Phase ◽  
Rolling Rate

This work presents the texture evolution of the austenitic phase of a copper based shape memory alloy by neutron diffraction. The Cu-11%Al-0.62%Be (in mass %) alloy was subjected to cold and hot rolling processes. The texture of the rolled samples at reduction rates of 5%, 10% and 15% respectively were compared to those of the raw material. A <001> partial fiber is observed for the raw material and cold rolled samples whereas the texture of the hot rolled sample is mainly characterized by a <111> fiber. The influence of these mechanical treatments on the transition temperatures and the hysteresis evolution was also analysed by following the integrated intensity of the {220} reflection of the austenitic phase. A shift towards low temperatures of martensitic transition temperatures is observed with the increasing of the rolling rate.

scholarly journals ATOMIC ORDERING AND MARTENSITIC TRANSITION IN A Cu-Zn-Al SHAPE MEMORY ALLOY

1991 ◽  
Vol 01 (C4) ◽  
pp. C4-259-C4-263 ◽  
Author(s):  
J. L. MACQUERON ◽  
M. MORIN ◽  
G. GUÉNIN ◽  
A. PLANES ◽  
J. ELGUETA ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Martensitic Transition ◽  
Atomic Ordering

Magnetic Field and Annealing Influence on the Martensitic Transition in Ni45.8Mn42.6In11.6 Shape Memory Alloy Ribbons

2012 ◽  
Vol 190 ◽  
pp. 307-310 ◽  
Author(s):  
Lorena González ◽  
J. García ◽  
M. Nazmunnahar ◽  
W.O. Rosa ◽  
L. Escoda ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Martensitic Transformation ◽  
Low Temperature ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
High Magnetic Field ◽  
Heusler Alloy ◽  
Vacuum Annealing ◽  
Martensitic Transition ◽  
Two Peaks

We report the effect of shorttime vacuum annealing, during 10 minutes at 923 K, 973 K, 1023 K and 1073 K, on magnetostructural properties of as-quenched ribbons of Ni45.5Mn43In11.5 Heusler alloy. The martensitic transformation is strongly sensitive to annealing treatments. The martensitic phase starting temperature is significantly shifted from 239 K towards higher temperatures around 370 K. It suffers a break down in two peaks when a field equal or higher than 500 Oe is applied to the as-quenched sample. This effect is not detected in the transformation of annealed ribbons but its signature can be observed at low temperature. Moreover, under high magnetic field up to 30 kOe temperatures associated with both martensitic and reverse transitions do not change for annealed samples, meanwhile the magnetization difference between austenite and martensite increases with the field. Nevertheless, it almost remains unchanged in the as-quenched ribbon.

Sign in / Sign up

Export Citation Format

Share Document