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Open AccessArticle

A Novel Extrusion for Manufacturing TiBw/Ti6Al4V Composite Tubes with a Quasi-Continuous Reinforced Structure

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
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Materials 2017, 10(4), 375; https://doi.org/10.3390/ma10040375
Received: 7 March 2017 / Revised: 23 March 2017 / Accepted: 29 March 2017 / Published: 31 March 2017
The present work introduces a novel extrusion with filler material to produce the high-performance TiBw/Ti-6Al-4V composite tube with a quasi-continuous reinforced structure. A simulation was adopted to study the effect of the filler material on the shape accuracy of the tubes. Based on the simulation results, the flow stress of the filler material was not the important factor, but the friction coefficient between the filler and TiBw/Ti-6Al-4V composite and the canning shape were critical to the tube precision. The microstructure and mechanical performance for the as-extruded TiBw/Ti-6Al-4V composite tubes were systematically investigated. After extrusion, the transverse section microstructure of the TiBw/Ti6Al4V composite tube remained quasi-continuous and the TiBw were rotated to align the extrusion direction. Moreover, the tensile strength and elongation reached 1240 MPa and 13.5%, resulting from dynamic recrystallization and whisker rotation. View Full-Text
Keywords: titanium matrix composites; tube; hot extrusion; microstructure; mechanical performance titanium matrix composites; tube; hot extrusion; microstructure; mechanical performance
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Yang, J.; Jiao, X.; Chen, W.; Zhang, W.; Wang, G. A Novel Extrusion for Manufacturing TiBw/Ti6Al4V Composite Tubes with a Quasi-Continuous Reinforced Structure. Materials 2017, 10, 375.

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