Mobility of quenched-in defects, non-linear anelasticity and stabilisation of martensite in copper-based alloys

Non-linear anelasticity of several Cu-based $\beta_1\,'$ martensitic alloys, exhibiting different stabilization properties, has been studied over wide temperature (8 to 300 K) and strain amplitude (2*10$^{-7}$ to 2*10$^{-4}$) ranges. Temperature ranges of quenched-in defect mobility were found to be similar for stabilizing Cu-Zn-A1 and for Cu-A1-Ni alloy, which is not prone to the stabilization, but different for two stabilizing alloys (Cu-A1-Be and Cu-Zn-A1). On the other hand, the interaction modes of quenched-in defects with linear/planar lattice defects differ significantly for Cu-A1-Ni and Cu-Zn-A1 alloys