Analysis of the Plasticity-Enhancing Mechanisms in 12 pctMn Austeno-ferritic Steel by In Situ Neutron Diffraction
SCIE
SCOPUS
- Title
- Analysis of the Plasticity-Enhancing Mechanisms in 12 pctMn Austeno-ferritic Steel by In Situ Neutron Diffraction
- Authors
- Lee, S; Woo, W; Decooman, BC
- Date Issued
- 2014-12
- Publisher
- SPRINGER
- Abstract
- The tensile behavior of ductile ultra-high strength Fe-12 pctMn-0.3 pctC-2 pctAl austeno-ferritic steel was studied by in situ neutron diffraction measurement of the elastic lattice strains, dislocation density, stacking fault probability, and strain-induced transformation kinetics. Micro-yielding was observed in austenite, and the plastic deformation of ferrite remained very limited throughout the deformation. The analysis identified three contributions to the strain hardening: twinning-induced plasticity, transformation-induced plasticity, and the accumulation of a high density of geometrically necessary dislocations accommodating the strain mismatch at the phase boundaries.
- Keywords
- TWIP STEEL; DEFORMATION; DISLOCATION; BEHAVIOR; TRANSFORMATION; CRYSTALS; KINETICS; GRAIN
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11633
- DOI
- 10.1007/S11661-014-2593-6
- ISSN
- 1073-5623
- Article Type
- Article
- Citation
- METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, vol. 45A, no. 13, page. 5823 - 5828, 2014-12
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