Consideration of particle rearrangement during the modeling of spark plasma densification of Al–Mg alloy powders. (June 2015)

• Record Type: Journal Article
• Authors: Hendrickx, P.; Milligan, J.; Brochu, M.
• Is Part Of: Scripta materialia. Volume 102(2015)
• Page Start: 7
• Page End: 10
• Publication Date: 2015-06
• Subjects: Spark plasma sintering -- Aluminum alloys -- Sintering -- Powder consolidation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.01.003
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : A constitutive model of powder densification during spark plasma sintering was adapted to introduce the contribution of particle rearrangement. Such contribution was quantified by a particle-packing factor describing changes in packing states upon compaction of spherical and non-spherical powder particles. To validate this addition, atomized and cryomilled aluminum–magnesium powders were sintered using single-step and two-step sintering schedules. Densification simulations of each powder and sintering schedule agreed well with experimental results, supporting the proposed description of the particle rearrangement contribution.