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Journals / International Journal of Innovative Engineering Applications / 2022 / Cilt: 6 - Sayı: 1

A Comparative Investigation on the Wear Performance of Compacted Graphite Iron (CGI) Treated with Single and Double Tempering

Tek ve Çift Temperleme İşlemi Yapılmış Vermiküler Dökme Demirin (VDD) Aşınma Performansı Üzerine Karşılaştırmalı Bir Araştırma

Engin TAN
Pages
75–80
Publication Date
2022-10-19
DOI
—
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AI Summary & Key Takeaways

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

According to the study's findings, double tempering heat treatment may optimize wear performance better than traditional single tempering, and structures with high toughness-wear resistance combinations can be obtained.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Compacted graphite iron (CGI) is a critical material in today's automotive and manufacturing industries.
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Key Findings & Data:Oil quenching was performed after 90 minutes of austenitization at 900°C, followed by 60 minutes of single and double tempering at three different temperatures (315, 350, and 375°C).
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Conclusion & Impact:According to the study's findings, double tempering heat treatment may optimize wear performance better than traditional single tempering, and structures with high toughness-wear resistance combinations can be obtained.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Vermiküler dökme demir · çift temperleme · aşınma

Abstract

Compacted graphite iron (CGI) is a critical material in today's automotive and manufacturing industries. Heat treatment processes can improve CGI wear properties, related primarily to microstructural changes. In this study, single and double tempering heat treatments were used to improve the wear properties of CGI. Oil quenching was performed after 90 minutes of austenitization at 900°C, followed by 60 minutes of single and double tempering at three different temperatures (315, 350, and 375°C). The wear performance of the samples was compared using a pin-on disc test and hardness measurements. The volume loss and friction coefficient were evaluated, and wear maps were constructed to determine the samples' wear behavior. SEM and EDS analyses were carried out to worn surfaces to interpret the relationship between wear mechanism and microstructure. According to the study's findings, double tempering heat treatment may optimize wear performance better than traditional single tempering, and structures with high toughness-wear resistance combinations can be obtained.

Özet

Vermiküler dökme demir (VDD), günümüzün otomotiv ve imalat endüstrilerinde kritik bir malzemedir. Isıl işlem süreçleri, büyük ölçüde mikroyapısal değişikliklerle ilgili olan VDD aşınma özelliklerini iyileştirebilmektedir. Bu çalışmada, VDD'nin aşınma özelliklerini iyileştirmek için tek ve çift temperleme ısıl işlemleri kullanılmıştır. 900°C'de 90 dakikalık östenitleme ve yağda su vermeden sonra üç farklı sıcaklıkta (315, 350 ve 375°C) 60 dakika süreyle tek ve çift temperleme uygulanmıştır. Numunelerin aşınma performansı, pin-on disk testi ve sertlik ölçümleri kullanılarak karşılaştırılmıştır. Numunelerin aşınma davranışını belirlemek için hacim kaybı ve sürtünme katsayısı incelenmiş, ayrıca aşınma haritaları oluşturulmuştur. Aşınma mekanizmaları ile mikro yapı arasındaki ilişkiyi yorumlamak için aşınma yüzeylerine SEM ve EDS analizleri uygulanmıştır. Çalışmanın bulgularına göre, çift temperleme ısıl işlemiyle aşınma performansının geleneksel tek tavlamaya göre daha iyi optimize edilebileceği ve yüksek tokluk-aşınma direnci kombinasyonuna sahip yapılar elde edilebileceği belirlenmiştir.

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Cite This Article

TAN, E. (2022). A Comparative Investigation on the Wear Performance of Compacted Graphite Iron (CGI) Treated with Single and Double Tempering. International Journal of Innovative Engineering Applications, Cilt: 6 - Sayı: 1, 75–80. https://ajindex.com/articles/541193

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References (13)

  1. Ovalı, İ. (2012). Chill formation on the surface of ductile iron and the effects of austempering heat treatments on microstructures and mechanical properties. Ph.D. thesis, Gazi University, Institute of Science and Technology, Ankara
  2. Tooptong, S., Park, K. H., & Kwon, P. (2018). A comparative investigation on flank wear when turning three cast irons. Tribology International, 120, 127-139
  3. Pina, J. C., Shafqat, S., Kouznetsova, V. G., Hoefnagels, J. P. M., & Geers, M. G. D. (2016). Microstructural study of the mechanical response of compacted graphite iron: An experimental and numerical approach. Materials Science & Engineering A, 658, 439-449
  4. Sjogren, T., Vomacka, P., & Svensson, I. L. (2004). Comparison of mechanical properties in flake graphite and compacted graphite cast irons for piston rings. International Journal of Cast Metals Research, 17(2), 65-71
  5. Dawson, S. (2009). Compacted graphite iron-A material solution for modern diesel engine cylinder blocks and heads. China Foundry, 6, 241-246
  6. Yang, W. J., Pang, J. C., Wang, L., Wang, S. G., Liu, Y. Z., Hui, L., Li, S. X. & Zhang, Z. F. (2021). Tensile properties and damage mechanisms of compacted graphite iron based on microstructural simulation. Materials Science & Engineering A, 814, 141244
  7. Nayyar, V., Kaminski, J., Kinnander, A., & Nyborg, L. (2012). An experimental investigation of machinability of graphitic cast iron grades; flake, compacted, and spheroidal graphite iron in continuous machining operations. Procedia CIRP, 1, 488-493
  8. Slatter, T., Lewis, R., & Jones, A. H. (2011). The influence of induction hardening on the impact wear resistance of compacted graphite iron (CGI). Wear, 3-4, 302-311
  9. Dawson, S., & Indra, F. (2014). Compacted graphite iron—a new material for highly stressed cylinder blocks and cylinder heads. Sintercast, 1-14
  10. Ki, S., Cockcroft, S. L., Omran, A. M., & Hwang, H. (2009). Mechanical, wear and heat exposure properties of compacted graphite iron at elevated temperatures. Journal of Alloys and Compounds, 487, 253-257
  11. Lewis, R., & Dwyer-Joyce R. S. (2002). Wear diesel engine inlet valves and seat inserts. Journal of Automobile Engineering Proceedings of the IMechE Part D, 216, 205-216
  12. Venugopal Rao, S., Venkata Ramana, M., & Kumar, A. C. S. (2019). An experimental investigation on compact graphite iron wear behavior at 32 °C and 200°C. Materials Today: Proceedings, 19, 778-780
  13. Ovalı, İ., & Mavi, A. (2011, May) The