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Plastic Strain due to Isothermal Transformation from Austenite to Ferrite in IF and Low Carbon Steels SCIE SCOPUS

Title
Plastic Strain due to Isothermal Transformation from Austenite to Ferrite in IF and Low Carbon Steels
Authors
Suh, DWHeung Nam HanSung-Joon Kim
Date Issued
2007-04
Publisher
JIM
Abstract
Apparent non-isotropic strain under external stress is quantified as a function of transformed fraction with dilatometric measurement and analysis for IF and low carbon steel. The non-isotropic strain of IF steel increases linearly with a transformed fraction, because fast transformation kinetics minimizes the contribution of creep in austenite and ferrite, and thereby the evolution of non-isotropic strain is mainly governed by transformation plasticity. For low carbon steel, the non-isotropic strain deviates from linear behavior in transformation segment where the creep in austenite and ferrite becomes remarkable due to the slow transformation kinetics. A diffusion controlled model describes well the effect of transformation kinetics on the evolution of non-isotropic strain during the transformation.
Keywords
steel; tran forrnation plasticity; non-isotropic strain; dilatometric analysis; EXTERNALLY APPLIED STRESS; MISMATCH PLASTICITY; SUPERPLASTICITY; IRON; MODEL
URI
https://oasis.postech.ac.kr/handle/2014.oak/25710
DOI
10.2320/MATERTRANS.48.882
ISSN
1345-9678
Article Type
Article
Citation
MATERIALS TRANSACTIONS, vol. 48, no. 4, page. 882 - 885, 2007-04
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