Plastic instability at elevated temperatures in a TRIP-assisted steel
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- 作者：Junying Mina ; junying.min@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Louis G. Hector Jr.b ; Ling Zhangc ; Li Sund ; John E. Carsleyb ; Jianping Linc
- 关键词：Quenching and partitioning (Q&P) steel ; Serrated flow ; Ultimate tensile strength (UTS) ; Portevin&ndash ; Le Châ ; telier (PLC) ; Dynamic strain aging (DSA)
- 刊名：Materials & Design
- 出版年：2016
- 出版时间：5 April 2016
- 年：2016
- 卷：95
- 期：Complete
- 页码：370-386
- 全文大小：3492 K
文摘
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A TRIP-assisted steel was tensile tested at wide temperature/strain rate range.
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Serrated flow was observed in a specific temperature/strain rate range.
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Strain rate contours were indicative of plastic instability and Type A PLC bands.
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Negative strain rate sensitivity and serrated flow suggest dynamic strain aging.
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Carbide precipitation affects the activation energy calculation for diffusion of C.