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Materials 2017, 10(2), 109; doi:10.3390/ma10020109

Microstructure Evolution and Mechanical Properties of Al-TiB2/TiC In Situ Aluminum-Based Composites during Accumulative Roll Bonding (ARB) Process

1
Nano Structural Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
2
Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
3
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Javier Narciso
Received: 28 September 2016 / Revised: 15 December 2016 / Accepted: 19 January 2017 / Published: 25 January 2017
(This article belongs to the Section Advanced Composites)
View Full-Text   |   Download PDF [11521 KB, uploaded 25 January 2017]   |  

Abstract

In this study, a kind of Al-TiB2/TiC in situ composite was successfully prepared using the melt reaction method and the accumulative roll-bonding (ARB) technique. The microstructure evolution of the composites with different deformation treatments was characterized using field emission scanning electron microscopy (FESEM) and a transmission electron microscope (TEM). The mechanical properties of the Al-TiB2/TiC in situ composite were also studied with tensile and microhardness tests. It was found that the distribution of reinforcement particles becomes more homogenous with an increasing ARB cycle. Meanwhile, the mechanical properties showed great improvement during the ARB process. The ultimate tensile strength (UTS) and microhardness of the composites were increased to 173.1 MPa and 63.3 Hv after two ARB cycles, respectively. Furthermore, the strengthening mechanism of the composite was analyzed based on its fracture morphologies. View Full-Text
Keywords: accumulative roll bonding (ARB); Al alloy matrix composites; mechanical properties; microstructure accumulative roll bonding (ARB); Al alloy matrix composites; mechanical properties; microstructure
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Nie, J.; Wang, F.; Li, Y.; Cao, Y.; Liu, X.; Zhao, Y.; Zhu, Y. Microstructure Evolution and Mechanical Properties of Al-TiB2/TiC In Situ Aluminum-Based Composites during Accumulative Roll Bonding (ARB) Process. Materials 2017, 10, 109.

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