Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Mechanical Properties and Wear Performance of the Al7075 Composites Reinforced with Bimodal Sized SiC Particles

이종입자 강화 SiC/Al7075 금속복합재료의 압축특성 및 마모특성 연구

  • Lee, Donghyun (Composites Research Division, Korea Institute of Materials Science) ;
  • Cho, Seungchan (Composites Research Division, Korea Institute of Materials Science) ;
  • Kim, Yangdo (School of Materials Science and Engineering, Pusan National University) ;
  • Lee, Sang-Kwan (Composites Research Division, Korea Institute of Materials Science) ;
  • Lee, Sang-Bok (Composites Research Division, Korea Institute of Materials Science) ;
  • Jo, Ilguk (Composites Research Division, Korea Institute of Materials Science)
  • Received : 2017.08.24
  • Accepted : 2017.10.30
  • Published : 2017.10.31
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Abstract

In this study, we have investigated microstructure, mechanical properties and wear characteristic of aluminum metal matrix composites with a high volume fraction and uniformly dispersed SiC particles which produced by a liquid pressing process. The volume fraction of bimodal SiC/Al7075 composite was 12% higher than that of the monomodal SiC/Al7075 composite and a compressive strength is increased about 200 MPa. As a result of the abrasion test, the wear width and depth of the bimodal SiC/Al7075 composite were $285.1{\mu}m$ and $0.45{\mu}m$, respectively. The coefficient of friction of bimodal SiC/Al7075 was 0.16.

본 연구에서는 액상가압공정을 통해 고체적율의 SiC 입자가 균일 분산된 알루미늄 금속복합재료를 제조하고, 미세조직, 기계적 특성 및 내마모 특성에 대해 분석하였다. 입자크기가 다른 이종 SiC 입자가 약 60 vol.% 이상의 체적율로 균일하게 분산된 SiC/Al7075 복합재료는 단일 SiC 입자로 강화된 복합재료에 비해 체적율이 약 12% 이상 높았으며 압축강도가 200 MPa 이상 증가하였다. 내마모시험 결과 이종 SiC 입자 금속복합재료의 경우 마모너비와 깊이가 각각 $285.1{\mu}m$, $0.45{\mu}m$이며, 마찰계수는 0.16으로 내마모 특성이 가장 우수하였다.

Keywords

References

  1. Nan, C.W., and Clarke, D.R., "The Influence of Particle Size and Particle Fracture on the Elastic/plastic Deformation of Metal Matrix Composites", Acta Materialia, Vol. 44, 1996, pp. 3801-3811. https://doi.org/10.1016/1359-6454(96)00008-0
  2. Tuncer, N., Tasdelen, B., and Arslan, G., "Effect of Passivation and Precipitation Hardening on Processing and Mechanical Properties of $B_4C$-Al Composites", Ceramics International, Vol. 37, 2011, pp. 2681-2687.
  3. Avcu, E., "The Influences of ECAP on the Dry Sliding Wear Behavior of AA7075 Aluminium Alloy", Tribology International, Vol. 110, 2017, pp. 173-184. https://doi.org/10.1016/j.triboint.2017.02.023
  4. Rao, R.N., and Das, S., "Wear Coefficient and Reliability of Sliding Wear Test Procedure for High Strength Aluminium Alloy and Composite", Materials and Design, Vol. 31, 2010, pp. 3227-3233. https://doi.org/10.1016/j.matdes.2010.02.017
  5. Mandal, A., Murty, B.S., and Chakraborty, M., "Wear Behavior of Near Eutectic Al-Si Alloy Reinforced with in-situ $TiB_2$ Particles", Materials Science and Engineering A, Vol. 506, 2009, pp. 27-33. https://doi.org/10.1016/j.msea.2008.11.007
  6. Costa, H.L., Oliveira Junior, M.M., and de Mello, J.D.B., "Effect of Debris Size on the Reciprocating Sliding Wear of Aluminium", Wear, Vol. 376-377, 2017, pp. 1399-1410. https://doi.org/10.1016/j.wear.2016.10.025
  7. Lee, S.B., Lee, S.-K., Lee, S., and Kim, N.J., "Microstructure and Mechanical Properties of Two Continuous-Fiber-Reinforced Zr-Based Amorphous Alloy Composites Fabricated by Liquid Pressing Process", Metallurgical and Materials Trans. A., Vol. 39, 2008, pp. 763-771. https://doi.org/10.1007/s11661-008-9477-6
  8. Lee, H., Sohn, S.S., Jeon, C., Jo, I., Lee, S.-K., and Lee, S., "Dynamic Compressive Deformation behavior of SiC-particulate-reinforced A356 Al Alloy Matrix Composites Fabricated by Liquid Pressing Process", Materials Science and Engineering A, Vol. 680, 2017, pp. 368-377. https://doi.org/10.1016/j.msea.2016.10.102
  9. Pramanik, A., Islam, M.N., Davies, I.J., Boswell, B., Dong, Y., Basak, A.K., Uddin, M.S., Dixit, A.R., and Chattopadhyaya, S., "Contribution of Machining to the Fatigue Behaviour of Metal Matrix Composites (MMCs) of Varying Reinforcement Size", International Journal of Fatigue, Vol. 102, 2017, pp. 9-17. https://doi.org/10.1016/j.ijfatigue.2017.04.018
  10. Shen, M.J., Wang, X.J., Ying, T., Wu, K., and Song, W.J., "Characteristics and Mechanical Properties of Magnesium Matrix Composites Reinforced with Micron/Submicron/Nano SiC Particle", Journal of Alloy and Compounds, Vol. 686, 2016, pp. 831-840. https://doi.org/10.1016/j.jallcom.2016.06.232
  11. Liang, Y.N., Ma, Z.Y., Li, S.Z., Li, S., and Bi, J., "Effect of Particle Size on Wear behaviour of SiC Particlulate-reinforced Aluminum Alloy Composites", Journal of Materials Science Letters, Vol. 14, 1995, pp. 114-116. https://doi.org/10.1007/BF00456563
  12. Chung, S., and Hwang, B.H., "A Microstructural Study of the Wear behavior of $SiC_p/Al$ Composites", Wear, Vol. 27, 1994, pp. 307-314.