Abstract

The influence of heating rate on the annealing and transformation behavior is investigated in TRIP steel having martensite as the starting microstructure. A higher heating rate preserves the hierarchical structure of the initial microstructure before starting the reverse transformation. As the heating rate increases, the reversely transformed austenite has a propensity to develop a fine lath morphology, a consequence of the retention of pre-existing austenite and its growth along the lath boundary.

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