Abstract
The characteristics of the structure formed by quenching in textured sheets of austenitic Fe-32.86 and 30.65 wt%Ni alloys were investigated by optical and electron microscopy. The results obtained are as follows:
(1) The plate-liked α′ martensite grew through the recrystallized austenite grain boundaries when the orientation of adjacent those grains was within some narrow range varying with the sheet width and cold rolling reduction.
(2) Stacking faults were observed in the Fe-32.86 wt%Ni alloy, and a structure, which seems to be hcp structure, was observed in the Fe-30.65 wt%Ni alloy. The hcp structure satisfies the orientation relationship between the austenite and hcp martensite lattices.
