Abstract

The driving force for dynamic transformation during double-hit hot compression of an as-cast medium-carbon low-alloy steel assessed done at 1473 K at strain rates of 0.25 and 0.50 s−1. Dynamically transformed ferrite was detected using the Kernel Average Misorientation (KAM) technique. The time interval between deformations affects the retained driving force, which decreases at a rate of 65 to 75 J/mol per second. This rate decreases with decreasing temperature due to a lower rate of recovery.

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