Inhomogeneous flow and the effective pressure concept in pressure sintering

Balakrishna Bhat, T. ; Arunachalam, V. S. (1980) Inhomogeneous flow and the effective pressure concept in pressure sintering Journal of Materials Science, 15 (7). pp. 1614-1618. ISSN 0022-2461

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Official URL: http://www.springerlink.com/content/l47w620460qm53...

Related URL: http://dx.doi.org/10.1007/BF00550576

Abstract

Many of the models proposed to describe pressure sintering of solids with a randomly distributed porosity have implicit in them the effect of porosity and it is incorrect to incorporate any extra pressure intensification factor. However, usually, pores are segregated into zones which leads to inhomogeneous deformation. A consequence of this inhomogeneity is to enhance densification rates by dislocation creep and particle sliding resulting in an anomalous pressure intensification factor. Some observations on microstructural development during hot isostatic pressing are also made.

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