A Robust Numerical Method for Validating Mesoscopic Grain Boundary Sliding Controlled Flow Model for Structural Superplasticity

Sriharsha Sripathi; Anantha Padmanabhan

doi:10.4028/www.scientific.net/MSF.735.246

Paper Titles

Modeling the Super Plastic Forming of a Multi-Sheet Diffusion Bonded Titanium Alloy Demonstrator Fan Blade
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Instrumentation and Control of a Bulge Test on a Superplastic Pb-Sn Alloy
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Experimental Study of the Mechanical Behavior of Materials under Transient Regimes of Superplastic Deforming
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Finite Element Simulation for Superplastic Blow Forming of Toroidal Ti-6Al-4V Fuel Tank
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A Robust Numerical Method for Validating Mesoscopic Grain Boundary Sliding Controlled Flow Model for Structural Superplasticity
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Low Temperature Superplasticity of Ti-6Al-4V Processed by Warm Multidirectional Forging
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Superplasticity of Mg-Zn-Y Alloy Prepared by Extrusion of Machined Chip
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Effect of Mg Content on High Strain Rate Superplasticity of Al-Mg-Sc-Zr Alloys Subjected to Equal-Channel Angular Pressing
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HomeMaterials Science ForumMaterials Science Forum Vol. 735A Robust Numerical Method for Validating...

A Robust Numerical Method for Validating Mesoscopic Grain Boundary Sliding Controlled Flow Model for Structural Superplasticity

Abstract:

Structural superplasticity is observed in materials of different classes with μm–, sub–μm– or nm– grain size. In all cases mesoscopic grain/interphase boundary sliding (~ grain diameter or more) is suggested to be the rate controlling mechanism. Sub–μm grained metallic and ceramic systems are analyzed here and good agreement with experimental results is established. Compared with earlier works, the numerical procedure is more robust and the free energy of activation for the rate controlling process is matched with the value for the same obtained using Eshelby’s equation.

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Materials Science Forum (Volume 735)

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246-250

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https://doi.org/10.4028/www.scientific.net/MSF.735.246

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Online since:

December 2012

Authors:

Sriharsha Sripathi, Anantha Padmanabhan

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Mesoscopic Grain Boundary Sliding, Rate Controlling Process, Structural Superplasticity, Sub-Micrometer Grained Materials, Superplastic Ceramics

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