Correlation of mechanical and tribological properties of Zn-40Al-2Cu-2Si alloy

Year 2022, , 61 - 66, 30.12.2022

Temel Savaşkan , Ali Paşa Hekimoğlu , Zeki Azaklı

https://doi.org/10.53501/rteufemud.1157005

Abstract

An attempt was made to correlate mechanical and tribological properties of Zn-40Al-2Cu-2Si alloy and the relationships between these properties were determined by linear regression analysis. The relationships between mechanical and tribological properties of this alloy were observed to be expressed by linear or simple straight-line equations. These relationships showed that as the hardness and the tensile strength of the alloy increase the friction coefficient, working temperature, and wear volume of it decrease but its average surface roughness increases.
These observations were explained in terms of microstructure and mechanical properties of the alloy, adhesion theory of friction and the Archard wear law.

Keywords

Non-ferrous metals, Sliding wear, Wear testing, Hardness

Supporting Institution

Karadeniz Technical University

Project Number

2008.112.03.1

Zn-40Al-2Cu-2Si alaşımının mekanik ve tribolojik özelliklerinin korelasyonu

Abstract

Zn-40Al-2Cu-2Si alaşımının mekanik ve tribolojik özellikleri ilişkilendirilmeye çalışıldı ve bu özellikler arasındaki ilişkiler lineer regresyon analizi ile belirlendi. Bu alaşımın mekanik ve tribolojik özellikleri arasındaki ilişkilerin doğrusal veya basit doğrusal denklemlerle ifade edilebildiği gözlendi. Bu ilişkiler alaşımın sertliği ve çekme mukavemeti arttıkça sürtünme katsayısının, çalışma sıcaklığının ve aşınma hacminin azaldığını ancak ortalama yüzey pürüzlülüğünün arttığını göstermiştir.
Bu gözlemler, alaşımın mikro yapısı ve mekanik özellikleri, adezyon teorisi ve Archard aşınma kanununa dayandırılarak açıklanmıştır.

Keywords

Demir dışı metaller, Kaymalı aşınma, Aşınma testi, Sertlik

Project Number

2008.112.03.1

References

• Bowden, F. P., Tabor, D. (1967). Friction and Lubrication, Methuen & Co. Ltd., London.
• Halling, J. (1989). Principles of Tribology, Macmillan Education Ltd., London.
• Hekimoglu, A.P., Savaskan, T. (2018). Lubricated wear characteristics of Zn-15Al-3Cu-1Si alloy and SAE 660 bronze, J. Fac. Eng. Archit. Gaz. 33 (1), 145-154. https://doi.org/10.17341/gazimmfd.406787.
• Hutchings, I.M. (1992). Tribology: Friction and Wear of Engineering Materials, Edward Arnold, UK.
• Jovanoviç, M.T., Bobiç, I., Djuriç, B., Grohovac, N., Iliç, N. (2007). Microstructural and sliding wear behaviour of a heat-treated zinc-based alloy, Tribol. Lett. 25, 173-184. https://doi.org/1007/s11249-006-9106-8.
• Lyon, R. (1986). The properties and applications of ZA alloys, The British Foundryman, August/ September, 344-349.
• Michalik, R. (2014). Structure and mechanical properties of ZnAl40Cu3 alloy modified with rare earth elements Materialwiss. Werkstofftech. 45 (5), 354-360. https://doi.org/10.1002/mawe.201400234.
• Michalik, R. (2018). Influence of solution heat treatment on phase composition and structure of ZnAl40Cu(1-2)Ti(1-2) alloys, Arch. Metall. 63 (1), 461-466. https://doi.org/10.24425/118962.
• Pola, A., Tocci, M., Goodwin, F.E. (2020). Review of Microstructures and Properties of Zinc Alloys, Metals, 10 (2), 253. https://doi.org/10.3390/met10020253.
• Prasad, B.K. (2000). Effects of partially substituting copper by silicon on the physical, mechanical and wear properties of a Zn-37.5%Al-based alloy, Mater. Charact. 44, 301-308. https://doi.org/10.1016/S1044-5803(99)00057-1.
• Savaşkan, T. Hekimoğlu, A.P., Azaklı, Z., Effect of isothermal transformation treatment on the mechanical and tribological properties of Zn-40Al-2Cu-2Si alloy, Met. Sci. Heat Treat+. (Accepted for publication)
• Savaskan, T., Azaklı, Z. (2008). An investigation of lubricated friction and wear properties of Zn-40Al-2Cu-2Si alloy in comparison with SAE 65 bearing bronze, Wear, 264 (11-12), 920-928. https://doi.org/10.1016/j.wear.2007.06.008.
• Savaşkan, T., Azaklı, Z., Hekimoğlu, A.P. (2021). Effect of heat treatment on mechanical and wear properties of Zn-40Al-2Cu-2Si alloy, T. Nonferr. Metal. Soc. 31 (9), 2651-2663. https://doi.org/10.1016/S1003-6326(21)65682-0.
• Savaşkan, T., Bican, O. (2005). Effects of silicon content on the microstructural features and mechanical and sliding wear properties of Zn-40Al-2Cu-(0-5)Si alloys, Mat. Sci. Eng. A-Struct. 404 (1-2), 259-269. https://doi.org/10.1016/j.msea.2005.05.078.
• Savaşkan, T., Hekimoğlu, A.P. (2015). Effect of quench-ageing treatment on the microstructure and properties of Zn-15Al-3Cu alloy, Int. J. Mater. Res. 106 (5), 481-487. https://doi.org/10.3139/146.111207.
• Savaşkan, T., Hekimoğlu, A.P., Azaklı Z, Çalış, M. (2022). Effect of working conditions on the lubricated wear behavior of Zn-40Al-2Cu-2Si alloy in the as-cast and T6 heat-treated states, J. Tribol-T. ASME, 144, 031702. https://doi.org/10.1115/1.4051264.