Modelling Shape Change of Parts Produced by Hot Isostatic Pressing of Powders

Author: Arén B.   Navara E.  

Publisher: Maney Publishing

ISSN: 1743-2901

Source: Powder Metallurgy, Vol.31, Iss.2, 1988-01, pp. : 101-105

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Abstract

Models for analysing shape changes during the hipping of powder compacts enclosed in preshaped containers are presented. Two limiting mechanisms are considered: homogeneous densification and the motion of a sharply defined densification front through the compact as hipping proceeds. The shape changes and shrinkages occurring in a number of simple one, two, and three dimensional shapes are analysed and illustrated. Although some of the assumptions implicit in the model are at variance with the conditions found in practice, it is concluded that useful insights are provided into the shape changes occurring during hipping. PM/0431