| Title |
Effect of Alloying elements on the Reverse Transformation Behaviour from martensite to Austenite in Metastable Austenitic Fe - Cr - Ni Steels |
| Authors |
이영국(Young Kook Lee); 권오준(Oh Joon Kwon) |
| Abstract |
Laboratory experiments were performed to investigate the effect of alloying elements on the reverse transformation behaviour from martensite(α`) to austenite(γ). The amount of deformation induced martensite was increased with decreasing the carbon content and increasing carbide precipitates. The mechanism of the austenite reversion was changed from the shear transformation to the diffusional transformation with increasing the carbon content in Fe-16% Cr-10% Ni alloys. The age hardening was observed during reversion heat treatment in the Ti-added Fe-Cr-Ni steel. Abnormally coarse grain structure was observed in the steels with high austenite stability which contained both strain induced martensite and retained austenite. The grain structure was formed due to the strain induced grain boundary migration. |