I. I. Musabirov, Kh. Ya. Mulyukov, V. V. Koledov, V. G. Shavrov, “Thermal expansion of Ni$_{2.08}$Mn$_{0.96}$Ga$_{0.96}$ alloy”, Zhurnal Tekhnicheskoi Fiziki, 2011, Volume 81, Issue 3,Pages 108

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Thermal expansion of Ni$_{2.08}$Mn$_{0.96}$Ga$_{0.96}$ alloy

I. I. Musabirov^a, Kh. Ya. Mulyukov^a, V. V. Koledov^b, V. G. Shavrov^b

^a Institute for Metals Superplasticity Problems of RAS, Ufa
^b Institute of Radioengineering and Electronics of the Russian Academy of Sciences, Moscow

Abstract: The temperature dependence of the thermal expansion of polycrystalline Ni$_{2.08}$Mn$_{0.96}$Ga$_{0.96}$ alloy samples is studied in the as-cast state and after homogenizing annealing. A sample in which twins are mainly oriented normal to the sample length shortens jumpwise during the martensitic transformation. A sample in which twins are parallel to its length elongates jumpwise. After annealing, both samples do not exhibit a jumplike change in length during the phase transformation. When an annealed sample is cooled in a magnetic field, its length again changes jumpwise in the phase transformation range.

Received: 02.06.2010