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, DW; Heung Nam Han; Sung-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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