Formation of ultrafine grained ferrite by warm deformation of lath martensite in low-alloy steels with different carbon content

Behrang Poorganji; Goro Miyamoto; Tadashi Maki; Tadashi Furuhara

doi:10.1016/j.scriptamat.2008.03.041

Formation of ultrafine grained ferrite by warm deformation of lath martensite in low-alloy steels with different carbon content

Behrang Poorganji, Goro Miyamoto, Tadashi Maki, Tadashi Furuhara

IMR - Materials Design Division

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

Formation of ultrafine grained ferrite by warm deformation of tempered lath martensite was investigated in Fe-2Mn-(0.1-0.8)C (mass%) alloys. Analysis of initial microstructure shows that an increase in carbon content leads to a decrease of lath martensite block size. Fine equiaxed (α) grains surrounded by high-angle boundaries are formed by dynamic recrystallization. As carbon content increases, the recrystallized α grain size decreases. It is considered that dynamic recrystallization of tempered lath martensite is a continuous type.

Original language	English
Pages (from-to)	279-281
Number of pages	3
Journal	Scripta Materialia
Volume	59
Issue number	3
DOIs	https://doi.org/10.1016/j.scriptamat.2008.03.041
Publication status	Published - 2008 Aug

Keywords

Dynamic recrystallization
Grain refining
Lath martensite
Thermomechanical processing

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10.1016/j.scriptamat.2008.03.041

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title = "Formation of ultrafine grained ferrite by warm deformation of lath martensite in low-alloy steels with different carbon content",

abstract = "Formation of ultrafine grained ferrite by warm deformation of tempered lath martensite was investigated in Fe-2Mn-(0.1-0.8)C (mass%) alloys. Analysis of initial microstructure shows that an increase in carbon content leads to a decrease of lath martensite block size. Fine equiaxed (α) grains surrounded by high-angle boundaries are formed by dynamic recrystallization. As carbon content increases, the recrystallized α grain size decreases. It is considered that dynamic recrystallization of tempered lath martensite is a continuous type.",

keywords = "Dynamic recrystallization, Grain refining, Lath martensite, Thermomechanical processing",

author = "Behrang Poorganji and Goro Miyamoto and Tadashi Maki and Tadashi Furuhara",

note = "Funding Information: The financial support of the JFE 21st Century Foundation is gratefully acknowledged. T.F. also expresses sincere thanks for funding and sample preparation by JFE Steel Corporation.",

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T1 - Formation of ultrafine grained ferrite by warm deformation of lath martensite in low-alloy steels with different carbon content

AU - Poorganji, Behrang

AU - Miyamoto, Goro

AU - Maki, Tadashi

AU - Furuhara, Tadashi

N1 - Funding Information: The financial support of the JFE 21st Century Foundation is gratefully acknowledged. T.F. also expresses sincere thanks for funding and sample preparation by JFE Steel Corporation.

PY - 2008/8

Y1 - 2008/8

N2 - Formation of ultrafine grained ferrite by warm deformation of tempered lath martensite was investigated in Fe-2Mn-(0.1-0.8)C (mass%) alloys. Analysis of initial microstructure shows that an increase in carbon content leads to a decrease of lath martensite block size. Fine equiaxed (α) grains surrounded by high-angle boundaries are formed by dynamic recrystallization. As carbon content increases, the recrystallized α grain size decreases. It is considered that dynamic recrystallization of tempered lath martensite is a continuous type.

AB - Formation of ultrafine grained ferrite by warm deformation of tempered lath martensite was investigated in Fe-2Mn-(0.1-0.8)C (mass%) alloys. Analysis of initial microstructure shows that an increase in carbon content leads to a decrease of lath martensite block size. Fine equiaxed (α) grains surrounded by high-angle boundaries are formed by dynamic recrystallization. As carbon content increases, the recrystallized α grain size decreases. It is considered that dynamic recrystallization of tempered lath martensite is a continuous type.

KW - Dynamic recrystallization

KW - Grain refining

KW - Lath martensite

KW - Thermomechanical processing

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Formation of ultrafine grained ferrite by warm deformation of lath martensite in low-alloy steels with different carbon content

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Keywords

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