Ravi Kumar, B (2012) Tensile deformation characteristics of bulk ultrafine-grained austenitic stainless steel produced by thermal cycling. Scripta Materialia, 66 (9). pp. 634-637.
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Abstract
Deformation microstructures of bulk ultrafine-grained austenitic AISI 304L stainless steels were analysed by Electron backscatter diffraction. Samples with grain sizes below 500nm showed transition from grain-scale deformation to the collective phenomenon of shear banding. It was assisted by strain-induced grain rotation and coalescence. This phenomenon was suppressed in samples with a bi-modal grain size distribution (maxima at ~650nm and ~1400nm) due to deformation induced martensite formation yielding high tensile strength and ductility (1348 MPa ultimate tensile strength at 0.36 max. true strain).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Stainless steel; ultrafine grain; plastic deformation; electron backscattered diffraction; deformation induced martensite |
| Subjects: | Materials Science > Phase Transformation Materials Science > Materials Charcterization |
| Divisions: | Material Science and Technology |
| Depositing User: | Dr Ravi Kumar B |
| Date Deposited: | 17 Apr 2012 05:09 |
| Last Modified: | 15 Jan 2014 07:36 |
| URI: | http://eprints.nmlindia.org/id/eprint/4985 |
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