CALPHAD-based alloy design for advanced automotive steels – Part II: Compositional and microstructural modification for advanced carburizing steels

Sung Chul Cha; Seung Hyun Hong; Myung Yeon Kim; Jihye Park; Jae Hyeok Shim; Woo Sang Jung; Markus Rath; Ernst Kozeschnik

doi:10.1016/j.calphad.2016.04.008

CALPHAD-based alloy design for advanced automotive steels – Part II: Compositional and microstructural modification for advanced carburizing steels

Sung Chul Cha
, Seung Hyun Hong
, Myung Yeon Kim
, Jihye Park
, Jae Hyeok Shim
, Woo Sang Jung
, Markus Rath
, Ernst Kozeschnik

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

15 Citations (Scopus)

Abstract

The CALPHAD-based computational techniques established in the first part of this series [1] have been applied for the development of advanced carburizing steels used for gears in vehicle transmissions. To improve the strength and hardenability of a conventional carburizing steel, the alloying composition has been modified based on the calculation of phase equilibria and the prediction of mechanical properties such as the yield and tensile strengths, hardness, and volume fractions of martensite and bainite. The size and density of carbides precipitated with V, Nb or Ti microalloying elements as well as their austenite grain size have been predicted by thermo-kinetic simulation to optimize the microstructure. The reliability of the computational results has been experimentally confirmed by comparing the austenite grain size and the hardness of the newly developed carburizing steels with those of the conventional carburizing steels.

Original language	English
Pages (from-to)	172-180
Number of pages	9
Journal	Calphad: Computer Coupling of Phase Diagrams and Thermochemistry
Volume	54
DOIs	https://doi.org/10.1016/j.calphad.2016.04.008
Publication status	Published - 1 Sept 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd

Keywords

Alloy design
Computer simulation
Grain growth
Mechanical property
Precipitation
Steels

Access to Document

10.1016/j.calphad.2016.04.008

Cite this

Cha, S. C., Hong, S. H., Kim, M. Y., Park, J., Shim, J. H., Jung, W. S., Rath, M., & Kozeschnik, E. (2016). CALPHAD-based alloy design for advanced automotive steels – Part II: Compositional and microstructural modification for advanced carburizing steels. Calphad: Computer Coupling of Phase Diagrams and Thermochemistry, 54, 172-180. https://doi.org/10.1016/j.calphad.2016.04.008

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abstract = "The CALPHAD-based computational techniques established in the first part of this series [1] have been applied for the development of advanced carburizing steels used for gears in vehicle transmissions. To improve the strength and hardenability of a conventional carburizing steel, the alloying composition has been modified based on the calculation of phase equilibria and the prediction of mechanical properties such as the yield and tensile strengths, hardness, and volume fractions of martensite and bainite. The size and density of carbides precipitated with V, Nb or Ti microalloying elements as well as their austenite grain size have been predicted by thermo-kinetic simulation to optimize the microstructure. The reliability of the computational results has been experimentally confirmed by comparing the austenite grain size and the hardness of the newly developed carburizing steels with those of the conventional carburizing steels.",

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Cha, SC, Hong, SH, Kim, MY, Park, J, Shim, JH, Jung, WS, Rath, M & Kozeschnik, E 2016, 'CALPHAD-based alloy design for advanced automotive steels – Part II: Compositional and microstructural modification for advanced carburizing steels', Calphad: Computer Coupling of Phase Diagrams and Thermochemistry, vol. 54, pp. 172-180. https://doi.org/10.1016/j.calphad.2016.04.008

CALPHAD-based alloy design for advanced automotive steels – Part II: Compositional and microstructural modification for advanced carburizing steels. / Cha, Sung Chul; Hong, Seung Hyun; Kim, Myung Yeon et al.
In: Calphad: Computer Coupling of Phase Diagrams and Thermochemistry, Vol. 54, 01.09.2016, p. 172-180.

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

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AU - Cha, Sung Chul

AU - Hong, Seung Hyun

AU - Kim, Myung Yeon

AU - Park, Jihye

AU - Shim, Jae Hyeok

AU - Jung, Woo Sang

AU - Rath, Markus

AU - Kozeschnik, Ernst

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ER -

CALPHAD-based alloy design for advanced automotive steels – Part II: Compositional and microstructural modification for advanced carburizing steels

Abstract

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Keywords

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