A novel low cost 2000 MPa grade ultra-high strength steel with balanced strength and toughness

Y. H. Gao, S. Z. Liu, Xiaobing Hu, Q. Q. Ren, Y. Li, Vinayak P Dravid, C. X. Wang*

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

A novel low cost martensitic based ultra-high strength steel (UHSS) with a tensile strength of 2020 MPa and fracture toughness of 105 MPa m1/2 achieved by nanoscale β-NiAl and M2C precipitates was developed. The strength and toughness of this experimental alloy are comparable to those of the commercially used UHSSs strengthened by only M2C carbides. However, the raw materials cost of this experimental steel is greatly reduced because of low Ni–Co concentration.

Original languageEnglish (US)
Pages (from-to)298-302
Number of pages5
JournalMaterials Science and Engineering A
Volume759
DOIs
StatePublished - Jun 24 2019

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Keywords

  • Low cost
  • MC secondary carbides
  • Martensitic steels
  • Ultra high strength-facture toughness balance
  • β-NiAl particles

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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