Modeling residual porosity in thick components consolidated by spark plasma sintering

SCRIPTA MATERIALIA

卷:76

Article

Milligan, J.¹  Hendrickx, P.¹  Tuencay, M. M.¹  Olevsky, E. A.²  Brochu, M.¹ 

[1] McGill Univ, Aluminum Res Ctr REGAL, Dept Min & Mat Engn, Montreal, PQ H3A 0C5, Canada

[2] San Diego State Univ, Powder Technol Lab, San Diego, CA 92182 USA

关键词: Spark plasma sintering;    Aluminum alloys;    Sintering;    Powder consolidation;   

DOI  :  10.1016/j.scriptamat.2013.12.014

来源: Elsevier

【 摘 要 】

A constitutive model for densification during spark plasma sintering was adapted and applied to an aluminum magnesium alloy to determine the effect of increasing sample thickness on residual porosity after sintering. The contributions of electromigration, sintering stresses and external load (on creep, diffusion and yielding) were all taken into consideration, as well as the effect of pressure on increasingly thick components. The results show that the overall description of the spark plasma sintering process agrees with the experimental results. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free