Record link: 
http://hdl.handle.net/20.500.12708/149525
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Title: 
CALPHAD-based alloy design for advanced automotive steels – Part II: Compositional and microstructural modification for advanced carburizing steels
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Citation: 
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, 54, 172–180. https://doi.org/10.1016/j.calphad.2016.04.008
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Publisher DOI: 
10.1016/j.calphad.2016.04.008
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Cha, Sung Chul 
Hong, Seung-Hyun 
Kim, Myung-Yeon 
Park, Jihye 
Shim, Jae-Hyeok 
Jung, Woo-Sang 
Rath, Markus 
Kozeschnik, Ernst 
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Organisational Unit: 
E308-03 - Forschungsbereich Werkstofftechnik 
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Journal: 
Calphad 
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ISSN: 
0364-5916
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Date (published): 
Sep-2016
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Number of Pages: 
9
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Publisher: 
PERGAMON-ELSEVIER SCIENCE LTD
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Peer reviewed: 
Yes
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Keywords: 
Computer Science Applications; Precipitation; Computer simulation; General Chemistry; General Chemical Engineering; Alloy design; Steels; Mechanical property; Grain growth
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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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Research Areas: 
Computational Materials Science: 100%
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Science Branch: 
Werkstofftechnik
Maschinenbau
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