Abstract

The Fe–0.44%C–1.8%Si–1.3%Mn–0.82%Cr–0.28%Mo steel treated by the quenching–partitioning process showed a product of strength and elongation of 30 GPa % with yield stress of 1350 MPa. Such a combination of high ultimate tensile strength and good ductility is attributed to a high portion of retained austenite (≥20%) transforming to martensite under tension. The high yield stress is provided by carbon supersaturation of austenite and a high dislocation density in this phase.

中文翻译：

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残余奥氏体在中碳Q&P钢高强塑性中的意义

摘要

经过淬火-配分工艺处理的Fe-0.44%C-1.8%Si-1.3%Mn-0.82%Cr-0.28%Mo钢的强度和伸长率乘积为30 GPa%，屈服应力为1350 MPa。这种高极限抗拉强度和良好延展性的结合归因于大部分残余奥氏体（≥20%）在拉伸下转变为马氏体。高屈服应力是由奥氏体的碳过饱和和该相中的高位错密度提供的。