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An Upper Bound Solution Analysis of Equal Channel Angular Pressing

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Abstract:

The purpose of this study is to obtain an upper bound solution of ECAP at 0 = ψ and φ=90 deg, which aims at analysis of the relations between ECAP upper bound pressure and the die angles of φ and ψ. The results show that the value of pressing load and the equivalent strain, e ε , decreases as the angle ψ increases at φ=90 deg, but the equivalent strain, e ε , decreases rapidly and no less than 0.90. The measured maximum load required for ECAP is in good agreement with the values obtained from the upper bound solution.

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Periodical:

Journal of Metastable and Nanocrystalline Materials (Volume 23)

Pages:

109-112

DOI:

https://doi.org/10.4028/www.scientific.net/JMNM.23.109

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Online since:

January 2005

Authors:

Wei Wei, Guang Chen

Keywords:

Equal-Channel Angular Pressing (ECAP), Severe Plastic Deformation (SPD), Upper Bound Solution

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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