The Properties of 1500MPa Grade Alloy Steel with Carbide Free Bainite/Martensite Mixed Microstructures

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概要

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• The effect of tempering temperature on the combined strength and toughness of a low carbon Mn-Si-Cr steel with the microstructure of martensite or carbide free bainite-martensite (CFB/M) has experimentally been investigated. The study reveals that the presence of CFB in a mixed microstructure retards the softening of the steel during tempering and also retards the tempered martensite embrittlement (TME) onset temperature. The air-cooled CFB/M possesses a better combination of strength and toughness compared with water quenched full martensite after tempering within some intermediate temperature range. Filmy rather than blocky retained austenite was found in the air-cooled CFB/M microstructure. The filmy retained austenite in CFB/M has a good stability. Carbon enriched filmy retained austenite in CFB might improve the toughness of the steel after tempering at intermediate temperature range.

• 社団法人 日本鉄鋼協会の論文
• 2003-03-15

著者

• Bai B.-z.

  Department Of Materials Science And Engineering Tsinghua University

• LIU D.-Y.

  Department of Materials Science and Engineering, Tsinghua University

• YANG Z.-G.

  Department of Materials Science and Engineering, Tsinghua University

• FANG H.-S.

  Department of Materials Science and Engineering, Tsinghua University

• YANG W.-Y.

  The State Key Laboratory of Tribology, Tsinghua University

• Liu D.-y.

  Department Of Materials Science And Engineering Tsinghua University

• Yang W.-y.

  The State Key Laboratory Of Tribology Tsinghua University

• Yang Z.-g.

  Department Of Materials Science And Engineering Tsinghua University

• Fang H.-s.

  Department Of Materials Science And Engineering Tsinghua University

関連論文

• The Properties of 1500MPa Grade Alloy Steel with Carbide Free Bainite/Martensite Mixed Microstructures
• Calculation of the Equilibrium Shape of TiN Particles in Iron

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