金属学报(英文版)
金屬學報(英文版)
금속학보(영문판)
ACTA METALLURGICA SINICA
2003年
3期
221-225
,共5页
shape memory alloy%TiNi film%pre-strain%phase transformation
The effect of pre-strain on phase transformation of TiNi shape memory alloy film was studied by differential scanning calorimeter measurement (DSC). Compared with un deformed TiNi film, the reverse transformation of pre-strained specimens was elevated to a higher temperature on the first heating, but martensite and reverse transforma tion on subsequent thermal cycles occurred at a lower temperature. The evolution of transformation behavior in pre-strained TiNi film was related to the change of elastic strain energy, irreversible energy and internal stress field.