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The effect of non-uniform densification during hot isostatic pressing
Luleå tekniska universitet.
Luleå tekniska universitet.
1992 (English)In: Hot isostatic pressing: theory and applications : proceedings of the third international conference, Osaka, Japan, 10-14 June 1991 / [ed] M. Koizumi, Elsevier, 1992, p. 23-28Conference paper, Published paper (Refereed)
Abstract [en]

Hot isostatic pressing (HIPing) is an extremely efficient way of densifying ceramic and metallic powders, or for healing porosity in castings. However, depending on the parameters of pressure, temperature, heating rate and sample size, can result in a non-uniform mode of densification. This mainly occurs when a rapidly heated sample, or a sample of large size, densifies quickly at the surface to produce in effect a fully dense, hard shell. It is shown that there can be a number of negative factors resulting from this, including reduced rates of densification, decrease of effective pressure, sample shape change, non-uniform shrinkage and the development of residual stresses in the sample etc. The materials mentioned are copper, steel, and Al sub 2 O sub 3

Place, publisher, year, edition, pages
Elsevier, 1992. p. 23-28
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-27158Local ID: 07f398a0-194b-11de-ae94-000ea68e967bISBN: 1-85166-744-X (print)OAI: oai:DiVA.org:ltu-27158DiVA, id: diva2:1000339
Conference
Hot Isostatic Pressing : 10/06/1991 - 14/06/1991
Note

Godkänd; 1992; 20090325 (andbra)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-02-06Bibliographically approved

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