TY - JOUR

T1 - Isothermal B2 → B19′ martensitic transformation in Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy

AU - Resnina, N.

AU - Belyaev, S.

AU - Shelyakov, A.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Isothermal martensitic transformation from cubic B2 phase to monoclinic B19′ phase is observed by calorimetric measurement at a constant temperature that is higher than the start temperature of the forward martensitic transformation found during continuous cooling. The dependences of the alloy volume undergone the forward transformation under isothermal condition on the holding temperature and time are obtained. It is assumed that the realization of the phase transformation under isothermal conditions is caused by a relaxation of elastic energy accumulated in the sample due to the formation of quasi-static strain nanodomains.

AB - Isothermal martensitic transformation from cubic B2 phase to monoclinic B19′ phase is observed by calorimetric measurement at a constant temperature that is higher than the start temperature of the forward martensitic transformation found during continuous cooling. The dependences of the alloy volume undergone the forward transformation under isothermal condition on the holding temperature and time are obtained. It is assumed that the realization of the phase transformation under isothermal conditions is caused by a relaxation of elastic energy accumulated in the sample due to the formation of quasi-static strain nanodomains.

KW - Differential scanning calorimetry (DSC)

KW - Isothermal martensitic transformation

KW - Phase transformation kinetics

KW - Shape memory alloys (SMA)

KW - Titanium-nickel alloy

UR - http://www.scopus.com/inward/record.url?scp=84948712249&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2015.09.024

DO - 10.1016/j.scriptamat.2015.09.024

M3 - Article

AN - SCOPUS:84948712249

VL - 112

SP - 106

EP - 108

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

ER -