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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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).
|Uncontrolled Keywords:||Stainless steel; ultrafine grain; plastic deformation; electron backscattered diffraction; deformation induced martensite|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr Ravi Kumar B|
|Deposited On:||17 Apr 2012 10:39|
|Last Modified:||15 Jan 2014 13:06|
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