Control of retained austenite morphology through double bainitic transformation

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• 作者：Kyeong-Won Kim^a ; ^b ; Kyung Il Kim^c ; Chang-Hoon Lee^a ; ^{lee1626@kims.re.kr" class="auth_mail" title="E-mail the corresponding author} ; Jun-Yun Kang^a ; Tae-Ho Lee^a ; Kyung-Mox Cho^b ; Kyu Hwan Oh^c
• 关键词：TRIP ; Retained austenite ; Morphology ; Tensile properties ; Semi in-situ EBSD
• 刊名：Materials Science & Engineering A
• 出版年：2016
• 出版时间：15 September 2016
• 年：2016
• 卷：673
• 期：Complete
• 页码：557-561
• 全文大小：1358 K

文摘

The feasibility controlling the morphology of retained austenite in TRIP steel was investigated utilizing double bainitic transformation which is two-step isothermal heat treatment. The change in morphology of the retained austenite from a blocky to film type improved the tensile properties owing to higher mechanical stability of film-like retained austenite.