The spheroidiszing behaviur of carbides in lower bainite transformed fr- om deformed austenite in GCr15 steel has been studied experimentally.It was found that during spheroidizing,the nucleation of carbides is mainly in the higher dislocation density regions,the number of carbides decreases and the size of carbides increases as the temperature increases.Since both nuc- cation of carbides and deffussion of carbon are different in different micros- tructure,the number and size of the carbides are different.
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