Mechanical twinning and dislocation slip multilayered deformation microstructures in β-type Ti–Mo base alloy

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 {332} twinning in the Ti–10Mo–1Fe region from...

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Bibliographic Details
Published in:Scripta materialia 2015-06, Vol.102, p.79-82
Main Authors: Min, Xiaohua, Emura, Satoshi, Meng, Fanqiang, Mi, Guangbao, Tsuchiya, Koichi
Format: Article
Language:English
Subjects:
Deformation
Dislocations
Ductility
Hot rolling
Interface
Microstructure
Multilayered deformation microstructures
Slip
Titanium
Titanium alloys
Titanium base alloys
Twinning
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Summary: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 {332} 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 β-type titanium alloys.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2015.02.018