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Defect Structure Parameters of Deformed Polycrystals on Micro- and Mesolevel of Grain Sizes
p.1
The Flow Behavior of Ultrafine-Grained Materials
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Shape Memory Effect and Superelasticity in Single Crystals of High-Strength Ferromagnetic Alloys
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Geometrically Necessary Dislocations in Deformed Martensitic Steel
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Study of Strain-Induced Change in Structural Characteristics and Long-Range Order in Ni3Al Alloy
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Hierarchically Organized Structures of Hardened Composition in Metal and Cement System
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Alloys Based on Crystallochemical and Geometric Parameters of Palladium Crystal Structure
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Study of Stress Relaxion in Ni3Ge Single Crystals with Anomalous Temperature Strengthening
p.49

The Flow Behavior of Ultrafine-Grained Materials

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Abstract:

Processing through the application of severe plastic deformation (SPD) leads to very significant grain refinement with grains that are typically in the submicrometer or even the nanometer range. These ultrafine-grained (UFG) materials provide an opportunity for achieving exceptional flow properties including high strength at ambient temperature and, if the very small grains are reasonably stable, superplastic elongations at high testing temperatures. These flow characteristics are examined for materials processed using the two SPD procedures of equal-channel angular pressing (ECAP) and high-pressure torsion (HPT).

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Periodical:

Advanced Materials Research (Volume 1013)

Pages:

7-14

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1013.7

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Online since:

October 2014

Authors:

Terence Langdon*

Keywords:

Equal-Channel Angular Pressing, Flow Processes, High-Pressure Torsion, Superplasticity, Ultrafine Grains

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