The shape memory effect is resulted from the reverse motion of Shockley partial dislocations which change εmartensite back to austenite. In Fe-Mn-Si alloys, the shape memory effect is obtained by the reverse transformation of stress-induced E martens...
The shape memory effect is resulted from the reverse motion of Shockley partial dislocations which change εmartensite back to austenite. In Fe-Mn-Si alloys, the shape memory effect is obtained by the reverse transformation of stress-induced E martensite during heating.
The reversibility of the motion of partial dislocations will not lead to a complete recovery. There are many factors influencing the shape memory effect like as alloy composition, Neel temperature, transformation temperature, applied stress and strain, annealing and quenching temperature, deformation and recovery annealing temperature etc.
In this paper, shape memory effect by training treatment(cold working-
annealing) and deformation temperature between -20℃ and 200℃ with
amount of strain was improved in Fe-l5Mn-5Cr-10Co-3Si alloys Training
treatment suppresses slip deformation and lower the stress for induced εmartensite transformation through introducing the stacking faults which can
act as nucleation embryo for εmartensite.