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A modified approach to modeling of diffusive transformation kinetics from nonisothermal data and experimental verification

Chen, Xiangjun, Xiao, Namin, Cai, Minghui, Li, Dianzhong, Li, Guangyao, Sun, Guangyong and Rolfe, Bernard F. 2016, A modified approach to modeling of diffusive transformation kinetics from nonisothermal data and experimental verification, Metallurgical and materials transactions a: physical metallurgy and materials science, vol. 47, no. 9, pp. 4732-4740, doi: 10.1007/s11661-016-3608-2.

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Title A modified approach to modeling of diffusive transformation kinetics from nonisothermal data and experimental verification
Author(s) Chen, Xiangjun
Xiao, Namin
Cai, Minghui
Li, Dianzhong
Li, Guangyao
Sun, Guangyong
Rolfe, Bernard F.ORCID iD for Rolfe, Bernard F. orcid.org/0000-0001-8516-6170
Journal name Metallurgical and materials transactions a: physical metallurgy and materials science
Volume number 47
Issue number 9
Start page 4732
End page 4740
Total pages 9
Publisher Springer
Place of publication New York, N.Y.
Publication date 2016-09
ISSN 1073-5623
Keyword(s) Science & Technology
Technology
Materials Science
Metallurgy & Metallurgical Engineering
Summary An inverse model is proposed to construct the mathematical relationship between continuous cooling transformation (CCT) kinetics with constant rates and the isothermal one. The kinetic parameters in JMAK equations of isothermal kinetics can be deduced from the experimental CCT kinetics. Furthermore, a generalized model with a new additive rule is developed for predicting the kinetics of nucleation and growth during diffusional phase transformation with arbitrary cooling paths based only on CCT curve. A generalized contribution coefficient is introduced into the new additivity rule to describe the influences of current temperature and cooling rate on the incubation time of nuclei. Finally, then the reliability of the proposed model is validated using dilatometry experiments of a microalloy steel with fully bainitic microstructure based on various cooling routes.
Language eng
DOI 10.1007/s11661-016-3608-2
Field of Research 091207 Metals and Alloy Materials
091307 Numerical Modelling and Mechanical Characterisation
Socio Economic Objective 861205 Sheet Metal Products
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Minerals, Metals & Materials Society and ASM International
Persistent URL http://hdl.handle.net/10536/DRO/DU:30084471

Document type: Journal Article
Collections: School of Engineering
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