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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.

History

Journal

Advanced Engineering Materials

Volume

19

Issue

11

Article number

1700345

Pagination

1 - 14

Publisher

Wiley

Location

London, Eng.

ISSN

1438-1656

eISSN

1527-2648

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

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