Finite Element Analysis of Pressure Influence on Densification of Titanium Alloy Powder under Hot Isostatic Pressing

Guo Cheng Liu; Yu Sheng Shi; Qing Song Wei; Ji Wei Wang

doi:10.4028/www.scientific.net/KEM.450.206

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 450Finite Element Analysis of Pressure Influence on...

Finite Element Analysis of Pressure Influence on Densification of Titanium Alloy Powder under Hot Isostatic Pressing

Abstract:

To investigate the influence of pressure on densification behavior of metal powder under hot isostatic pressing (HIP), the consolidation of Ti6Al4V powder at various applied pressures during HIP processes were investigated by finite element method in this paper. The plasticity and creep phenomenon of the compact under high temperature and pressure were described by the viscoplastic Perzyna model, which integrated with a modified yield criterion for porous metal materials. The thermo-mechanical coupling analysis was carried out by the finite element code MSC.Marc. The calculated results show non-uniform density distributions for the compact, but this phenomenon decreases as increasing the applied pressure. The densification rate is significantly influenced by applied pressure. The consolidation mechanisms for powder compact were also discussed.

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Periodical:

Key Engineering Materials (Volume 450)

Pages:

206-209

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.450.206

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Online since:

November 2010

Authors:

Guo Cheng Liu, Yu Sheng Shi, Qing Song Wei, Ji Wei Wang

Keywords:

Finite Element Analysis (FEA), Hot Isostatic Pressing (HIP), Pressure, Titanium Alloy

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