Densification by sintering incorporating phase transformations

The phenomenological model of sintering with phase transformations is elaborated. The additional components of the dissipative balance take into account the change of the theoretical density and the Kirkendall effect. The evolution of the phase composition of the intermetallic system is modeled and...

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Bibliographic Details
Published inScripta materialia Vol. 37; no. 5; pp. 635 - 643
Main Authors Olevsky, E., Skorohod, V., Petzow, G.
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Ltd 01.09.1997
Elsevier Science
Subjects
Applied sciences
Exact sciences and technology
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
Sintered metals and alloys. Pseudo alloys. Cermets
Phenomenological model
Phase transformation
Densification
Deformation
Sintering
Theoretical study
Diffusion coefficient
Diffusion
Powder metallurgy
Modeling
Strain rate
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Summary:The phenomenological model of sintering with phase transformations is elaborated. The additional components of the dissipative balance take into account the change of the theoretical density and the Kirkendall effect. The evolution of the phase composition of the intermetallic system is modeled and calculated for a certain Ni-Al powder system. The idea of preventing the explosive progress of the reaction by a heating-cooling scheme of the thermotreatment is suggested. The optimization of the heating regime for sintering of a certain Ni-Al powder specimen is carried out.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(97)00137-1