The Features of Deformation Behavior of Ultra-Fine Grained Titanium and Aluminum Alloys under Conditions of High Strain Rate Superplasticity

Evgeny V. Naydenkin; Il'ya V. Ratochka

doi:10.4028/www.scientific.net/MSF.584-586.159

Paper Titles

Reversal Straining to Manage Structure in Pure Aluminum under SPD
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Double-Billet Incremental ECAP
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The Influence of ECAP Die Channel Geometry on Shear Strain and Deformation Uniformity
p.145

Microstructure and Mechanical Properties of Nanostructured Intermetallic Alloy Based on Ti₂AlNb
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The Features of Deformation Behavior of Ultra-Fine Grained Titanium and Aluminum Alloys under Conditions of High Strain Rate Superplasticity
p.159

High Strain Rate Superplasticity in a Zr and Sc Modified 7075 Aluminum Alloy Produced by ECAP
p.164

Influence of Number of Passes in ECAP on Superplastic Behavior in a Magnesium Alloy
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The New Approach to Produce Al Sheets with UFG Structure Using SPD Processing
p.176

Grain Refinement and Deformation Behavior of Ultrafine Grained Pd and Pd-Ag Alloys Produced by HPT
p.182

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The Features of Deformation Behavior of Ultra-Fine Grained Titanium and Aluminum Alloys under Conditions of High Strain Rate Superplasticity

Abstract:

The stress-strain curves at high strain rate superplasticity were analyzed for Ti-6Al-4V and aluminum 1420 industrial alloys in ultra-fine grained state produced by severe plastic deformation. For both alloys the observed strengthening effect can be caused by grain growth under the above mentioned conditions resulting to increase of grain boundary sliding resistance. In the case of aluminum alloy the grain recovery can be accompanied by significant change in phase composition which is also stimulates the recrystallization process.