Effect of Alloying and Ageing on Parameters of the B2↔R Transition in TiNi-Me Alloys
Institute of Metal Physics, National Academy of Sciences of the Ukraine, Department of Phase Transformations, 36 Vernadsky St., 252142 Kiev, Ukraine
Specific splitting of the l/3(hkl) reflections along with the B2(CsCl)-matrix reflections at the B2↔IC↔C(R) transition at T≤TRcor was observed. Linear size of the R-phase needle-like domain structure λ1 correlates well in a reverse manner with degree of incommensurability δ1. The CDWs formation with coupling to longitudinal displacement wave is thought to be responsible for the B2↔R phase transition.
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