Application of high-pressure torsion for consolidation of ceramic powders

Kaveh Edalati; Zenji Horita

doi:10.1016/j.scriptamat.2010.03.048

Application of high-pressure torsion for consolidation of ceramic powders

Kaveh Edalati, Zenji Horita

Research output: Contribution to journal › Article › peer-review

63 Citations (Scopus)

Abstract

Alumina (α-Al₂O₃) powders were successfully consolidated by application of high-pressure torsion (HPT) at ambient temperature and by a subsequent annealing process. Introduction of strain by HPT was confirmed by peak broadening in X-ray diffraction analysis. It was shown that consolidation was greater, giving rise to increased hardness with increasing imposed strain, annealing temperature and annealing time. Scanning electron microscopy showed that consolidation occurred at lower temperatures due to the presence of strain.

Original language	English
Pages (from-to)	174-177
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	2
DOIs	https://doi.org/10.1016/j.scriptamat.2010.03.048
Publication status	Published - Jul 2010

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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abstract = "Alumina (α-Al2O3) powders were successfully consolidated by application of high-pressure torsion (HPT) at ambient temperature and by a subsequent annealing process. Introduction of strain by HPT was confirmed by peak broadening in X-ray diffraction analysis. It was shown that consolidation was greater, giving rise to increased hardness with increasing imposed strain, annealing temperature and annealing time. Scanning electron microscopy showed that consolidation occurred at lower temperatures due to the presence of strain.",

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