Maji, B. C.; Krishnan, M.; Hiwarkar, V.; Samajdar, I.; Ray, R. K.
ABSTRACT
Texture evolution and microstructural changes during cold rolling and annealing of Fe-14Mn-6Si-9Cr-5Ni
shape memory alloy have been investigated. The starting solution-annealed material has a nearly random
texture with microstructure composed of equiaxed austenite grains with
e
martensite plates inside. Cold rolling induces a strong alloy type texture with Brass {011}á211ñ and Goss {011}á100ñ
as major components. Annealing of the cold-deformed material produces a nearly random texture. The microstructural investigation
reveals that with increase in cold deformation, the amount of stress-induced
e
and a¢
martensite volumes increase. The electron back-scattered diffraction (EBSD) phase mapping shows that
reversion of the e
martensite begins only after recrystallization sets in at a temperature of 1073 K.