Sb. Kustov et al., INTERNAL-FRICTION IN CU-AL-NI CRYSTALS IN MARTENSITIC PHASE AND DURING TEMPERATURE-INDUCED MARTENSITIC-TRANSFORMATION, Journal de physique. IV, 6(C8), 1996, pp. 389-392
Temperature and oscillatory strain amplitude dependences of the ultras
onic amplitude-dependent internal fiction and oscillatory anelastic st
rain at temperatures 6.5-300K have been studied in Cu-Al-Ni single cry
stals in martensitic phase. An anomalous behaviour of the amplitude de
pendent internal friction and effective Young modulus was revealed in
quenched crystals: the amplitude dependent internal friction decreases
with temperature increase at all temperatures and strain amplitudes i
nvestigated, and the Young modulus increases notably with temperature
from 70 to 200K. The anomalies in the ADIF and effective Young modulus
behaviour are attributed to peculiarities of dislocation dynamics.