Paper Titles
Preface
Overview of Quick Plastic Forming Technology
p.3
Superplasticity of Ultrafine-Grained Aluminum Alloy Processed by ECAP and Warm Rolling
p.13
Superplastic Forming and Foaming Process for Porous Aluminum Plates
p.23
Production of Ti-6Al-4V Sheets for Low Temperature Superplastic Forming
p.31
Fibre Reinforced Refractory Castables :An Alternative Solution for SPF Die Manufacturing
p.37
Superplastic Titanium Tanks for Propulsion System of Satellites
p.43
The Applications of SPF/DB Combined with Welding Technologies
p.49
Grain Refinement and High Temperature Deformation in Friction Stir Processed Sheets of Magnesium Alloys
p.55

Production of Ti-6Al-4V Sheets for Low Temperature Superplastic Forming

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Abstract:

The availability to produce Ti-6Al-4V sheet material with submicron-grained microstructure for superplastic forming (SPF) has been studied. The laboratory scale sheets with an average grain size of 0.3 μm and the commercial size sheets with an average grain size of 0.65 μm were produced by pack rolling manufacturing technique from the forgings with pre-formed submicrocrystalline (SMC) structure. The sheets possessing isotropic mechanical properties in the sheet plane had higher yield strength, ultimate tensile strength. Over the exceptionally low temperature range of 700-750°C the SMC sheets demonstrated enhanced superplastic properties, namely an initial flow stress of 20-25 MPa and elongation more than 600% at the strain rate of 3×10-4/s. The sheet material with SMC structure was characterized by well formability compared to a conventional sheet under low temperature superplastic conditions.

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Periodical:

Materials Science Forum (Volumes 551-552)

Pages:

31-36

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.551-552.31

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Online since:

July 2007

Authors:

Gennady A. Salishchev, Oleg R. Valiakhmetov, Werner Beck, F.H. Froes

Keywords:

Fabrication of Sheet Material, Submicrocrystalline Structure, Super Plastic Forming (SPF), Superplastic Properties, Two-Phase Titanium Alloy

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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