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Modelling the shape change of parts produced by hot iostatic pressing of powders
Luleå tekniska universitet.
University of Zimbabwe.
1988 (English)In: HIP: proceedings of the International Conference on Hot Isostatic Pressing, Luleå, 15-17 June 1987 / [ed] Tore Garvare, Luleå: CENTEK , 1988, 107-115 p.Conference paper (Refereed)
Abstract [en]

Densification in a HIP cycle is non-uniform because of the temperature gradient in the powder body. This gradient gives rise to a densification front, which moves from the surface inward. The densification front will, in reality, be more or less diffuse, but may be considered as extremely sharp for the purpose of modelling the shape and dimensional changes of idealized powder bodies. The geometrical considerations presented show that extreme shape change can occur in a practical HIP cycle. As an example, a square cross-section powder body acquires a star-like shape, in which the angle at the edges depends solely on the densification ratio. The results may serve as a base for an improved powder capsule design, taking into account the effects of non-uniform densification

Place, publisher, year, edition, pages
Luleå: CENTEK , 1988. 107-115 p.
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-40439Local ID: f9581240-88cf-11de-8da0-000ea68e967bISBN: 91-86998-34-XOAI: oai:DiVA.org:ltu-40439DiVA: diva2:1013961
Conference
International Conference on Hot Isostatic Pressing : 15/06/1987 - 17/06/1987
Note
Godkänd; 1988; 20090814 (andbra)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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