Open AccessEffects of quenched-in vacancies on the reverse martensitic phase transformation temperature of the Cu-11.9Al-2.5Mn(wt%) shape memory alloy studied by internal friction
Author(s) -
Qingzhou Wang,
Lu Dong-Mei,
Cui Chun-Xiang,
Han Fu-Sheng
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.7083
Subject(s) - materials science , shape memory alloy , alloy , quenching (fluorescence) , diffusionless transformation , internal friction , phase (matter) , thermodynamics , condensed matter physics , martensite , composite material , microstructure , optics , physics , chemistry , organic chemistry , fluorescence
By internal friction techniquethe behaviors of quenched-in vacancies and their influence on the reverse martensitic phase transformation (MT) temperature of the Cu-11.9Al-2.5Mn (wt%) shape memory alloy have been studied. Investigations on the specimens subjected to various cooling regimes indicate that rapid cooling rate leads to relatively high reverse MT temperature. For the water-quenched specimensthe reverse MT temperature bears a non-monotonic relationship to quenching temperature. This phenomenon may be related to the different formation energies of vacancies in ordered and disordered phases.