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Effects of Nano TiC Particles on Recrystallization and Mechanical Properties of Al-Zn-Mg-Cu Alloy

1
School of Materials Engineering, Jiangsu University of Technology, Changzhou 213001, China
2
Key Laboratory of Advanced Materials Design and Additive Manufacturing of Jiangsu Province, Changzhou 213001, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(7), 753; https://doi.org/10.3390/met9070753
Received: 24 May 2019 / Revised: 2 July 2019 / Accepted: 3 July 2019 / Published: 4 July 2019
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Abstract

The recrystallization and mechanical properties of 7085 alloy and TiC/7085 composites with different nano TiC content (0.1, 0.3, 0.5, and 1 wt%) were investigated in this work. Results showed that as the TiC content increased from 0.1 to 1 wt%, dynamic recrystallization was promoted in which the composites proceeded by hot deformation; after T6 treatment, static recrystallization was hindered. In addition, the ultimate strength of composites first increased and then decreased with the increase of nano TiC particle content from 0.1 to 1 wt%. When the content of nano TiC particles reached 0.5 wt%, the tensile strength of the nanocomposites was improved to 608 MPa, 12% higher than that of 7085 alloy, via the reinforcing particle strengthening mechanism. Due to the grain coarsening and the TiC particle cluster, the ultimate tensile strength of 1 wt% TiC/7085 composite decreased to 585 MPa. View Full-Text
Keywords: nano TiC particles; 7085 alloy; recrystallization; particle strengthening nano TiC particles; 7085 alloy; recrystallization; particle strengthening
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Yao, X.; Zhou, D.; Lu, Y.; Li, X.; Wang, J.; Bai, Z.; Huang, Y. Effects of Nano TiC Particles on Recrystallization and Mechanical Properties of Al-Zn-Mg-Cu Alloy. Metals 2019, 9, 753.

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