Abstract
Crystallographic characters of austenite and primary-carbide in hypereutectic Fe-Cr-C alloy were analyzed by EBSD and TEM. Band-structure on primary-carbide/austenite interface was observed by TEM and HRTEM. Observations proved the band-structure to be austenite plastic-deformation zone full of strip nanograins and dislocations, which is caused by thermal-mismatch-stress. The coefficient of thermal expansion anisotropy of austenite caused different deformation phenomena.
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