Martensitic transformation in Ni-Mn-Ga alloys

1 July 1996

journal article
research article
Published by Taylor & Francis in Phase Transitions

Vol. 57 (4) , 233-240
https://doi.org/10.1080/01411599608208748

Abstract

Single crystals of different compositions in shape memory alloys Ni-Mn-Ga have been studied by electron and low temperature X-ray diffraction as well as by differential scanning calorimetry. It is shown that the cooling-induced martensitic phases are long-periodic ones modulated along the (110) directions by a transverse wave of atomic shifts with 5 and 7 atomic layers periodicity for the alloys studied exhibiting a martensitic transformation at 180 K and 446 K, respectively. The transformation heats appeared to be about 10 times different for both alloys.

Keywords

This publication has 2 references indexed in Scilit:

Soft modes in Ni₂MnGa single crystals
Journal of Physics: Condensed Matter, 1994
Stress - induced martensitic transformations in Ni2MnGa
Scripta Metallurgica et Materialia, 1992