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Metallurgical and Materials Transactions A

, Volume 49, Issue 6, pp 2363–2372 | Cite as

Fabrication of Carbon Nanofibers/A356 Nanocomposites by High-Intensity Ultrasonic Processing

  • Qing-Jie Wu
  • Hong Yan
Article
  • 126 Downloads

Abstract

A356 alloy reinforced with carbon nanofibers (CNFs) was fabricated by high-intensity ultrasonic vibration processing. The microstructure and mechanical properties were investigated. The distribution of CNFs became more and more uniform with the increase of ultrasonic power, and the mechanical properties of nanocomposites were significantly enhanced accordingly. The yield strength (YS), ultimate tensile strength (UTS), and microhardness of the nanocomposite increased by 38.3, 21.9, and 43.2 pct, respectively, at a CNF content of 0.9 wt pct compared with the matrix without CNF addition. The improvement in mechanical properties was the effect of CNFs on the thermal expansion mismatch strengthening of the nanocomposite, the grain refinement of the nanocomposite, and the load transfer from the matrix to the nanofibers.

Notes

Acknowledgments

This research is supported by the National Natural Science Foundation of China (Grant No. 51364035) and the Natural Science Foundation of Jiangxi Province (Grant No. 20171BAB206034).

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  1. 1.School of Mechanical and Electrical EngineeringNanchang UniversityNanchangChina
  2. 2.Key Laboratory of Light Alloy Preparation & Processing in Nanchang CityNanchangChina

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