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Gradient Structures in Thin-Walled Metallic Tubes Produced by Continuous High Pressure Tube Shearing Process
journal contribution
posted on 2017-11-01, 00:00 authored by Rimma Lapovok, Y Qi, H P Ng, L S Toth, Y Estrin© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A new severe plastic deformation process, the authors refer to as High Pressure Tube Shearing (HPTS), is proposed. This type of deformation processing enhances the strength of the walls of metallic tubes by producing gradient microstructures with ultrafine grained layers in near-surface regions. The thickness of the layers associated with a gradient in microstructure can be controlled by tuning the rotational and translational speeds of the process. The paper describes several examples of steel and titanium tubes processed by different variants of HPTS. The possibility of producing gradient microstructures with ultrafine grained layers at inner or outer surface of a tube, or at both surfaces is demonstrated by in-depth theoretical analysis, finite element simulations, and experimental investigation of the microstructure and texture of tube walls.
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Journal
Advanced Engineering MaterialsVolume
19Issue
11Article number
1700345Pagination
1 - 14Publisher
WileyLocation
London, Eng.Publisher DOI
ISSN
1438-1656eISSN
1527-2648Language
engPublication classification
C1 Refereed article in a scholarly journalUsage metrics
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