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Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration

1
School of Mechanical and Electronic Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665, China
2
Guangdong Key Laboratory for Advanced Metallic Materials processing, South China University of Technology, Guangzhou 510640, China
3
National Enterprise Technology Center, Guangdong Xingfa Aluminum (jiangxi) Co. Ltd., Yichun 336000, China
*
Authors to whom correspondence should be addressed.
Metals 2019, 9(7), 763; https://doi.org/10.3390/met9070763
Received: 30 May 2019 / Revised: 4 July 2019 / Accepted: 4 July 2019 / Published: 8 July 2019
(This article belongs to the Special Issue Advances in Metal Composites and Processing Technologies)
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Abstract

Micron Ti metal particles were incorporated into SiCp/7075Al composites using pressure infiltration. The interface structure between the Ti metal particles and the matrix during the casting processes were investigated. Results show that the dispersed unreacted Ti particles form mutual diffusion layer at the interface without the formation of low-temperature intermetallic phases during the solidification processes. The interaction between the micron Ti and the molten aluminum alloy is subject to the mutual diffusion coefficient of Ti–Al rather than the reaction activation energy. The tensile strength and plasticity of the composite were improved simultaneously due to the high interfacial bonding strength and released thermal misfit stress cause by the incorporated Ti metal particles. View Full-Text
Keywords: aluminum matrix composite; interface; microstructure; mechanical property; hybrid aluminum matrix composite; interface; microstructure; mechanical property; hybrid
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Liu, Y.; Zheng, Z.; Cao, G.; Zhu, D.; Yang, C.; Luo, M. Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration. Metals 2019, 9, 763.

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