Identification of the Norton-Green Compaction Model for the Prediction of the Ti-6Al-4V Densification During the Spark Plasma Sintering Process

One of the main challenges for the industrialization of the spark plasma sintering (SPS) is to resolve issues linked to the compaction of real parts with complex shapes. The modeling of powder compaction is an interesting tool to predict how the densification field varies during sintering. However,...

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Published inAdvanced engineering materials Vol. 18; no. 10; pp. 1720 - 1727
Main Authors Manière, Charles, Kus, Ugras, Durand, Lise, Mainguy, Ronan, Huez, Julitte, Delagnes, Denis, Estournès, Claude
Format Journal Article
LanguageEnglish
Published Blackwell Publishing Ltd 01.10.2016
Wiley
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ISSN1438-1656
1527-2648
DOI10.1002/adem.201600348

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Summary:One of the main challenges for the industrialization of the spark plasma sintering (SPS) is to resolve issues linked to the compaction of real parts with complex shapes. The modeling of powder compaction is an interesting tool to predict how the densification field varies during sintering. However, expressing the behavior law which reflect the powder compaction is often a difficult and long step in the model establishment. In this paper, a simple methodology for the identification of the densification parameters is proposed. Dense and porous creep tests combined with SPS die compaction tests are employed to determine a complete densification law on a Ti–6Al–4V alloy directly in a SPS machine. The compaction model obtained is successfully validated through prediction of the densification of new SPSed samples. An in situ SPS identification, using a complete and non‐reductive method of the Norton‐Green law is performed on a Ti–6Al–4V materials. The identified model is tested on two independent SPS experiments for the densification of this powder material and shows very good prediction of the experimental sintering trajectory.
Bibliography:ArticleID:ADEM201600348
istex:B45AEF4F70EDC92B96A8A200901B695D2065E465
The support of the Plateforme Nationale CNRS de Frittage Flash (PNF2/CNRS) is gratefully appreciated. C. M. and C. E. thank the French National Research Agency (ANR) for financial support of this study within project ANR09 MAPR-007 Impulsé.
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ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201600348