Formation of "carbide-free zones" resulting from the interplay of C redistribution and carbide precipitation during bainitic transformation

Thomas Klein; Christina Hofer; Marina Lukas; Tomasz Wojcik; Ronald Schnitzer; Matthew Galler; Gerald Ressel

doi:10.1016/j.mtla.2019.100380

Formation of "carbide-free zones" resulting from the interplay of C redistribution and carbide precipitation during bainitic transformation

Thomas Klein, Christina Hofer, Marina Lukas, Tomasz Wojcik, Ronald Schnitzer, Matthew Galler, Gerald Ressel

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

4 Citations (Scopus)

Abstract

Advanced bainitic steels exploit their constitution of a phase mixture of bainitic ferrite and retained austenite. The desired microstructures are usually adjusted via isothermal or continuous cooling treatments below the bainite-start-temperature. In the present work, we analyze the microstructural evolution during bainite formation in detail and we report on a novel mechanism for the formation of “carbide-free zones” in the close proximity of austenite. Carbides are formed in the interior of bainitic ferrite, which is isolated from surrounding austenite, while the depletion of C in the vicinity of austenite suppresses their formation.

Original language	English
Article number	100380
Journal	Materialia
Volume	7.2019
Issue number	September
DOIs	https://doi.org/10.1016/j.mtla.2019.100380
Publication status	Published - 23 Jun 2019

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abstract = "Advanced bainitic steels exploit their constitution of a phase mixture of bainitic ferrite and retained austenite. The desired microstructures are usually adjusted via isothermal or continuous cooling treatments below the bainite-start-temperature. In the present work, we analyze the microstructural evolution during bainite formation in detail and we report on a novel mechanism for the formation of “carbide-free zones” in the close proximity of austenite. Carbides are formed in the interior of bainitic ferrite, which is isolated from surrounding austenite, while the depletion of C in the vicinity of austenite suppresses their formation.",

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AU - Klein, Thomas

AU - Hofer, Christina

AU - Lukas, Marina

AU - Wojcik, Tomasz

AU - Schnitzer, Ronald

AU - Galler, Matthew

AU - Ressel, Gerald

PY - 2019/6/23

Y1 - 2019/6/23

N2 - Advanced bainitic steels exploit their constitution of a phase mixture of bainitic ferrite and retained austenite. The desired microstructures are usually adjusted via isothermal or continuous cooling treatments below the bainite-start-temperature. In the present work, we analyze the microstructural evolution during bainite formation in detail and we report on a novel mechanism for the formation of “carbide-free zones” in the close proximity of austenite. Carbides are formed in the interior of bainitic ferrite, which is isolated from surrounding austenite, while the depletion of C in the vicinity of austenite suppresses their formation.

AB - Advanced bainitic steels exploit their constitution of a phase mixture of bainitic ferrite and retained austenite. The desired microstructures are usually adjusted via isothermal or continuous cooling treatments below the bainite-start-temperature. In the present work, we analyze the microstructural evolution during bainite formation in detail and we report on a novel mechanism for the formation of “carbide-free zones” in the close proximity of austenite. Carbides are formed in the interior of bainitic ferrite, which is isolated from surrounding austenite, while the depletion of C in the vicinity of austenite suppresses their formation.

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DO - 10.1016/j.mtla.2019.100380

M3 - Article

SN - 2589-1529

VL - 7.2019

JO - Materialia

JF - Materialia

IS - September

M1 - 100380

ER -

Formation of "carbide-free zones" resulting from the interplay of C redistribution and carbide precipitation during bainitic transformation

Abstract

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