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Near-net-shape forming of alumina powder under hot pressing and hot isostatic pressing SCIE SCOPUS

Title
Near-net-shape forming of alumina powder under hot pressing and hot isostatic pressing
Authors
Kim, KTKwon, YSKim, HG
Date Issued
1997-09
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
Densification and deformation of alumina powder under hot pressing and hot isostatic pressing were investigated. Finite element calculations were performed by implementing constitutive equations for grain growth, power law creep and diffusional creep in the user defined subroutine CREEP of ABAQUS. An alumina compact of valve head shape was produced under hot pressing and Its forming process was predicted by the finite element calculation. Densification behavior of an alumina powder compact encapsulated by a stainless steel container was also investigated under hot isostatic pressing. Inhomogeneous deformations of an alumina powder compact due to the shield effect of a container during hot isostatic pressing were observed experimentally and predicted by the finite element analysis. (C) 1997 Elsevier Science Ltd.
Keywords
near-net-shape forming; alumina; hot pressing; hot isostatic pressing; densification; POWER-LAW CREEP; DENSIFICATION; CERAMICS
URI
https://oasis.postech.ac.kr/handle/2014.oak/21214
DOI
10.1016/S0020-7403(97)00003-9
ISSN
0020-7403
Article Type
Article
Citation
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, vol. 39, no. 9, page. 1011 - 1022, 1997-09
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김기태KIM, KI TAE
Dept of Mechanical Enginrg
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