Effect of Tempering Temperature on Strength and Toughness of Novel Carbide-Free Bainite/Martensite Duplex Phase Steel

The effect of tempering temperature on strength and toughness of the novel carbide free bainite/martensite (CFB/M) duplex steel was investigated. The results showed that the CFB/M mixed microstructure has better tempering stability than single martensite microstructure. The steel has good combinatio...

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Bibliographic Details
Published inJournal of iron and steel research, international Vol. 9; no. 1; pp. 46 - 49
Main Authors Liu, D-Y, Bai, B-Z, Fang, H-S, Yang, Z-G, Zhang, C, Yan, W-Y
Format Journal Article
LanguageEnglish
Published Tsinghua University, Beijing 100084, China 01.05.2002
Subjects
bainite/martensite
carbide
free
microstructure
strength
tempering
toughness
carbide free bainite/martensite mixed microstructure
tempering
strength
toughness
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Summary:The effect of tempering temperature on strength and toughness of the novel carbide free bainite/martensite (CFB/M) duplex steel was investigated. The results showed that the CFB/M mixed microstructure has better tempering stability than single martensite microstructure. The steel has good combination of strength and toughness after tempering at 350 ℃, because the CFB in CFB/M mixed microstructure separates the original austenite grains and causes the refinement of lath martensite, and thermal and mechanical stable retained austenite in CFB is deformed absorbing energy and blocking crack propagation.
Bibliography:11-3678/TF
TG14
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SourceType-Scholarly Journals-1
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ISSN:1006-706X
2210-3988