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

  • Yusong Fan
  • , Guhui Gao*
  • , Zongyan Liu
  • , Xuan Cheng
  • , Dezhen Yang
  • , Xiaolu Gui
  • , Zhiping Xiong
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)784-792
Number of pages9
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume56
Issue number3
DOIs
Publication statusPublished - Mar 2025
Externally publishedYes

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