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Shear deformation with imposed hydrostatic pressure for enhanced compaction of powder
journal contribution
posted on 2008-05-01, 00:00 authored by Rimma Lapovok, D Tomus, C BettlesIn this paper equal channel angular extrusion with back pressure was used to compact Ti-6Al-4V powder at 400 °C, achieving relative densities of 98.3-98.6% and green strengths up to 750 MPa. The novelty of the approach arises from the notion that severe shear deformation is an important factor for consolidation. Improved compaction is related to enhanced self-diffusion through the creation of additional diffusion paths (defects) and the imposed hydrostatic pressure. The role of deformation mechanisms in improving compaction is discussed. © 2008 Acta Materialia Inc.
History
Journal
Scripta materialiaVolume
58Issue
10Pagination
898 - 901Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
1359-6462Language
engPublication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2008, ElsevierUsage metrics
Categories
Keywords
Science & TechnologyTechnologyNanoscience & NanotechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringScience & Technology - Other TopicsMaterials ScienceTi-6Al-4V powder compactionequal channel angular extrusionback pressureporesdensityCONSOLIDATIONVOIDSMechanical EngineeringCondensed Matter Physics
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