Localized deformation due to Portevin-LeChatelier effect in 18Mn-0.6C TWIP austenitic steel
SCIE
SCOPUS
- Title
- Localized deformation due to Portevin-LeChatelier effect in 18Mn-0.6C TWIP austenitic steel
- Authors
- Chen, L; Kim, HS; Kim, SK; Cooman, BC
- Date Issued
- 2007-01
- Publisher
- IRON STEEL INST JAPAN KEIDANREN KAIKA
- Abstract
- The thermo-mechanical properties of low stacking fault energy austenitic Fe18Mn0.6C steel exhibiting twinning-induced plasticity were investigated during uniaxial tensile deformation using infrared thermography. Over a wide strain range, the plastic deformation was by the movement of very few well-defined localized deformation bands, The formation and propagation of Portevin-LeChatelier (PLC) bands lead to type A and type B serrated stress-strain curves, exhibiting a negative strain rate sensitivity. The PLC band properties were analyzed in detail: strain, strain rate and mobile dislocation density within the bands were determined. The microstructures of the un-deformed and deformed Fe18Mn0.6C TWIP steel were studied by transmission electron microscopy. The possible dynamic strain aging processes causing the localized deformation are reviewed.
- Keywords
- TWIP steel; thermo-mechanical properties; dynamic strain aging; FCC ALLOYS; STRAIN; BEHAVIOR; ORIGIN; SLIP
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/29430
- DOI
- 10.2355/isijinternational.47.1804
- ISSN
- 0915-1559
- Article Type
- Article
- Citation
- ISIJ INTERNATIONAL, vol. 47, no. 12, page. 1804 - 1812, 2007-01
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- There are no files associated with this item.
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