Deakin University
Browse

File(s) under permanent embargo

A Modified Approach to Modeling of Diffusive Transformation Kinetics from Nonisothermal Data and Experimental Verification

Version 2 2024-06-06, 01:57
Version 1 2016-06-28, 23:47
journal contribution
posted on 2024-06-06, 01:57 authored by X Chen, N Xiao, M Cai, D Li, G Li, G Sun, Bernard RolfeBernard Rolfe
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.

History

Journal

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

Volume

47

Pagination

4732-4740

Location

New York, N.Y.

ISSN

1073-5623

eISSN

1543-1940

Language

English

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2016, The Minerals, Metals & Materials Society and ASM International

Issue

9

Publisher

SPRINGER