Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 639, Issue -, Pages 187-191Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2015.05.002
Keywords
Fe-Mn-Al-C steels; kappa-carbide; Strain hardening rate; Planar slip; Deformation mechanism
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Funding
- China Scholarship Council, China (CSC) [201306080065]
- Natural Science Foundation of Hebei Province, China [E2010001390]
- Fundamental Research Foundation of Central Universities [N100602004]
- Australian Research Council, Australia
- Australian Microscopy & Microanalysis Research Facility node at the University of Sydney
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The influence of Al content on the microstructure, deformation behavior and strain hardening rate of aged high strength low density Fe-Mn-Al-C steels was investigated. Increasing the Al content in the steels increases the volume fraction of shearable nanocrystalline coherent kappa-carbide precipitates. This results in strengthening the strain softening effect on glide planes and a decreased density of slip bands, leading to significant decrease of the strain hardening rate. (C) 2015 Elsevier B.V. All rights reserved.
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