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<p>A novel chemically heterogenous high carbon bainitic steel was developed via controlling initial partitioning of austenite stabilized element (Mn) and strong carbide-forming element (V), fast heating to austenization and low-temperature austempering treatments. The newly developed bainitic steel with exciting high yield strength and ductility is expected to break the dilemma of strength-ductility trade-off. The increased yield strength is primarily originated from precipitation strengthened retained austenite and refined bainitic matrix, while the good ductility benefits from Mn-induced chemical heterogeneity.</p>

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Enhanced Strength and Ductility of Chemically Heterogeneous Bainitic Steel Via Precipitation Strengthened Retained Austenite

  • 期刊论文

  • 发表日期：

    2025年1月24日

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  • Yusong Fan,
  • Guhui Gao,
  • Zongyan Liu,
  • Xuan Cheng,
  • Dezhen Yang,
  • Xiaolu Gui,
  • Zhiping Xiong

摘要

A novel chemically heterogenous high carbon bainitic steel was developed via controlling initial partitioning of austenite stabilized element (Mn) and strong carbide-forming element (V), fast heating to austenization and low-temperature austempering treatments. The newly developed bainitic steel with exciting high yield strength and ductility is expected to break the dilemma of strength-ductility trade-off. The increased yield strength is primarily originated from precipitation strengthened retained austenite and refined bainitic matrix, while the good ductility benefits from Mn-induced chemical heterogeneity.