Journals / Politeknik Dergisi / 2017 / Cilt: 20 - Sayı: 4

Effect of heat treatments on tribological characteristics of hot-extruded AA7075-Sicp composites

Sıcak ekstrüze edilmiş AA7075-Sicp kompozitlerin tribolojik karakteristiklerine ısıl işlemin etkisi

Pages
806–814
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results showed that the hardness and wear resistance of composites increases depending on the increase of SiC particle content.

📌 3 Key Takeaways

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Objective & Hypothesis:The effect of T6 and T73 tempers on microstructure, hardness and tribological performance of hot-extruded reinforced with 32 µm sized SiC particles reinforced AA7075 Al matrix composites produced by hot-extrusion of powder metal compacts was investigated.
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Key Findings & Data:For this purpose, the cold pressed AA7075 powder metal compacts with various SiC contents were extruded into 12 mm rod bars at 480 °C.
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Conclusion & Impact:The results showed that the hardness and wear resistance of composites increases depending on the increase of SiC particle content.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The effect of T6 and T73 tempers on microstructure, hardness and tribological performance of hot-extruded reinforced with 32 µm sized SiC particles reinforced AA7075 Al matrix composites produced by hot-extrusion of powder metal compacts was investigated. For this purpose, the cold pressed AA7075 powder metal compacts with various SiC contents were extruded into 12 mm rod bars at 480 °C. The microstructure, hardness and tribological characteristics of T6 and T73 tempered samples were examined with scanning electron microscopy (SEM), energy dispersive x-ray analyzer (EDX), brinell hardness and adhesive wear tests. The results showed that the hardness and wear resistance of composites increases depending on the increase of SiC particle content. It was also determined that T6 tempered samples showed better hardness, friction and wear performance compared to T73 tempered samples.

Özet

Toz metal kompaktların sıcak ekstrüzyonu ile üretilen ve farklı oranlarda 32 µm boyutlu SiC partiküller ile takviye edilen AA7075 Al matrisli kompozitlerin mikroyapı, sertlik ve tribolojik performansına T6 ve T73 ısıl işlemlerinin etkisi incelendi. Bu amaçla, soğuk olarak preslenmiş farklı SiC partikül içeriğine sahip AA7075 toz metal kompaktlar 480 °C'de, 12 mm çaplı çubuklar halinde ekstrüze edildi. T6 ve T73 ısıl işlemlerinin uygulandığı ekstrüze edilmiş numunelerin mikroyapı, sertlik ve tribolojik karakteristikleri tarama elektron mikroskobu (SEM), enerji dağınımlı x-ray analizör (EDX), brinell sertlik ve adhesif aşınma test ve analizleri ile incelendi. Deneysel sonuçlar, SiCpartikül içeriğinin artmasına bağlı olarak kompozitin sertlik ve aşınma direncinin de arttığını göstermektedir. Ayrıca, T6 ısıl işlemli numunelerin T73 ısıl işlemli numunelere göre daha iyi sertlik, sürtünme ve aşınma performansı gösterdiği tespit edildi.

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Cite This Article

MATİK, U., TANATTI, K. (2017). Effect of heat treatments on tribological characteristics of hot-extruded AA7075-Sicp composites. Politeknik Dergisi, Cilt: 20 - Sayı: 4, 806–814. https://ajindex.com/articles/306634

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References (12)

  1. Ezatpour H. R., Torabi Parizi M., Sajjadi S. A., Ebrahimi G. R. and Chaichi A., "Microstructure, mechanical analysis and optimal selection of 7075 aluminum alloy based composite reinforced with alumina nanoparticles", Materials Chemistry and Physics, 178: 119-127, (2016)
  2. Mohammed K. S. and Naeem H. T. "Corrosion Behaviour of Al 2 O 3p Reinforced Al-Zn-Mg-Cu-Ni-Co Alloy Fabricated via PM", International Journal of Science and Research (IJSR), 4: 2-6 (2015)
  3. Çevik B., Özçatalbaş Y. and Gülenç B. "Effect of welding speed on the mechanical properties and weld defects of 7075 Al alloy joined by FSW", Kovove Materialy, 54: 241-247, (2016)
  4. Übeyli M., Balci E., Sarikan B., Öztas M. K., Camuşcu N., Yildirim R. O. and Keleş Ö., "The ballistic performance of SiC-AA7075 functionally graded composite produced by powder metallurgy", Materials and Design, 56: 31-36, (2014)
  5. Cruz S., Rey P., Román M. and Merino P. "Influence of Content and Particle Size on Properties of Tic Reinforced 7075 Aluminum Matrix Composite", 15th European Conference on Composite Materials, 1-8, (2012)
  6. Hernández-Martinez S.E., Cruz-Rivera J.J., Garay-Reyes C.G. Martínez-Sánchez and R. Estrada-Guel, I., "Comparative study of synthesis of AA 7075-ZrO2metal matrix composite by different mills", Journal of Alloys and Compounds, 643: S107-S113, (2015)
  7. Shen, Q., Wu, C., Luo, G., Fang, P., Li, C., Wang, Y. and Zhang, L. "Microstructure and mechanical properties of Al-7075/B4C composites fabricated by plasma activated sintering", Journal of Alloys and Compounds, 588: 265- 270, (2014)
  8. Karunanithi R., Bera S. and Ghosh K.S., " Electrochemical behaviour of TiO2 reinforced Al 7075 composite", Materials Science and Engineering B, 190: 133-143, (2014)
  9. Shanbhag V. V., Yalamoori N. N., Karthikeyan S., Ramanujam R. and Venkatesan K., "Fabrication, surface morphology and corrosion ınvestigation of Al 7075-Al 2O3 matrix composite in sea water and ındustrial", Procedia Engineering, 97: 607-613, (2014)
  10. Ramakoteswara V., Ramanaiah N., Moulana M. and Sarcar M., "Mechanical and tribological properties of AA7075 - TiC metal matrix composites under heat treated ( T 6 ) and cast conditions", Integrative Medicine Research, 5: 377-383, (2016)
  11. Kennedy A. R. and Wyatt S. M. "Characterizing particlematrix interfacial bonding in particulate Al-TiC MMCs produced by different methods", Composites Part A: Applied Science and Manufacturing, 32: 555-559 (2001)
  12. Daoud A. and Reif W. "Influ