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Indexed by:Journal Papers

Date of Publication:2015-06-01

Journal:SCRIPTA MATERIALIA

Included Journals:SCIE、EI、Scopus

Volume:102

Page Number:79-82

ISSN No.:1359-6462

Key Words:Titanium alloys; Twinning; Multilayered deformation microstructures; Interface; Ductility

Abstract:A 10-layer Ti-10Mo-1Fe/Ti-10Mo-3Fe alternating stack material was manufactured by hot-roll bonding and heat treatment. The interfaces between layers could not be detected except for transition region in Fe concentration. However, the interfaces prevented {3 3 2}<1 1 3> twinning in the Ti-10Mo-1Fe region from expanding throughout Ti-10Mo-3Fe region which was deformed by dislocation slips despite having the same crystallographic character. The artificially multilayered twinning/dislocation slip deformation microstructures provide a novel approach for controlling the balance between uniform elongation and yield strength in beta-type titanium alloys. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.