Vibrational properties of shape-memory alloys

A Planes, L Mañosa - Solid state physics, 2001 - Elsevier
Publisher Summary This chapter discusses vibrational properties of shape-memory alloys.
The crystal structure of a given material depends on its energy and also its entropy, which …

Large temperature span and giant refrigerant capacity in elastocaloric Cu-Zn-Al shape memory alloys

L Mañosa, S Jarque-Farnos, E Vives… - Applied Physics …, 2013 - pubs.aip.org
We report on the elastocaloric effect in a Cu-Zn-Al shape memory alloy. We show that both
the isothermal entropy and adiabatic temperature changes are large and reproducible upon …

Effects of ageing on bainitic and thermally induced martensitic transformations in ductile Cu–Al–Mn-based shape memory alloys

Y Sutou, N Koeda, T Omori, R Kainuma, K Ishida - Acta Materialia, 2009 - Elsevier
The effects of ageing at 473–573K on the hardness, microstructure and thermoelastic
martensitic transformation in Cu–Al–Mn-based shape memory alloys were investigated. It …

Transformation stress of shape memory alloy CuZnAl: Non-Schmid behavior

S Alkan, Y Wu, A Ojha, H Sehitoglu - Acta Materialia, 2018 - Elsevier
We establish an atomistically-informed model for predicting the non-Schmid behavior of
critical stresses for bcc to orthorhombic (L2 1 to 18R) martensitic transformation in CuZnAl …

The martensitic phases and their stability in Cu Zn and Cu Zn Al alloys—I. The transformation between the high temperature β phase and the 18R martensite

JL Pelegrina, M Ahlers - Acta metallurgica et materialia, 1992 - Elsevier
The stability between the high temperature β phase and the orthorhombic martensite in Cu
Zn and Cu Zn Al single crystals is analyzed. Experimental results for high electron …

Evolution of martensitic transformation in Cu–Al–Ni shape memory alloys during low-temperature aging

V Recarte, RB Pérez-Sáez, ML Nó… - Journal of materials …, 1999 - cambridge.org
The effect of thermal aging at 473 K on martensitic transformation characteristics have been
studied in the Cu–Al–Ni shape memory alloys. An increase of martensitic transformation …

Effects of aging treatment on the microstructure and superelasticity of columnar-grained Cu71Al18Mn11 shape memory alloy

J Liu, H Huang, J Xie - International Journal of Minerals, Metallurgy, and …, 2016 - Springer
The effect of aging treatment on the superelasticity and martensitic transformation critical
stress in columnar-grained Cu 71 Al 18 Mn 11 shape memory alloy (SMA) at the …

Ageing of martensite: stabilisation and ferroelasticity in Cu-based shape memory alloys

M Ahlers, JL Pelegrina - Materials Science and Engineering: A, 2003 - Elsevier
The changes in Gibbs energy were evaluated for the atomic configurations resulting after
different diffusional processes, in order to detect the mechanisms that are responsible for …

Stabilization and two-way shape memory effect in Cu-Al-Ni single crystals

E Cingolani, M Ahlers, J Van Humbeeck - Metallurgical and Materials …, 1999 - Springer
The two-way shape memory effect (TWME) induced by stabilization of the martensite phase
during aging has been studied in Cu-13.4 Al-4.0 Ni (mass pct) single crystals. The influence …

The two way shape memory effect in Cu Zn Al single crystals: role of dislocations and stabilization

E Cingolani, M Ahlers, M Sade - Acta metallurgica et materialia, 1995 - Elsevier
The two way shape memory effect (TWME) has been studied in single crystals of Cu Zn
Al alloys in which dislocations have been introduced by plastic deformation of the …