Effect of sintering temperature on pore ratio and mechanical properties of composite structure in nano graphene reinforced ZA27 based composites

Abstract

Nano graphene platelet (Gr) reinforced nano composites with a zinc-aluminum alloy (ZA27) matrix were produced by powder metallurgy at four different mass ratios (0.5wt%, 1.0wt%, 2.0wt% and 4.0wt%) and three different sintering temperatures (425, 450, and 475°C). In order to investigate the effect of sintering temperatures and nano graphene reinforcement materials on the composite structure, the microstructures of the composite samples were investigated and their densities were determined with a scanning electron microscope. Hardness, transverse rupture, and abrasion wear tests were performed to determine the mechanical properties. According to the test results, the porosity increased and the mechanical strength of the nano composites decreased as the amount of nano graphene reinforcement in ZA27 increased. However, when the composites produced in different reinforcement ratios were evaluated, the increase in sintering temperature increased the mechanical structure by positively affecting the composite structure.

Keywords

nanocomposite / zinc-aluminum alloy / graphene / microstructure / sintering / mechanical property

References

[1] O. Güler, H. Çuvalcı, M. Çelebi, and A. Çanakçı, The effect of nano-particle content on the wear behavior of ZA27/Al₂O₃ nanocomposites, [in] International Conference on Engineering and Natural Sciences, Sarajevo, 2016, p. 199.

[2] Senel CM, Gurbuz M, Koç E. New generation composites with graphene reinforced aluminum matrix. Eng. Mach., 2015, 56(669): 36.

[3] Dharsan K, Kumar SS. An Exploration of the influence in aluminium metal matrix composite reinforced with graphene. Int. J. Innovative Res. Sci. Eng. Technol., 2017, 6(7): 141.

[4] O. Güler, H. Cuvalcı, A. Canakçı, and M. Celebi, The effect of graphite content on the wear behavior of ZA27/Al₂O₃/graphite hybrid nanocomposites, [in] International Conference on Engineering and Natural Sciences, Sarajevo, 2016, p. 192.

[5] Zhou MY, Qu XN, Ren LB, Fan LL, Zhang YX, Guo YY, Quan GF, Tang Q, Liu B, Sun H. The effects of carbon nanotubes on the mechanical and wear properties of AZ31 alloy. Materials, 2017, 10(12): 1385.

[6] Dalmis R, Cuvalci H, Canakci A, Guler O. Investigation of graphite nano particle addition on the physical and mechanical properties of ZA27 composites. Adv. Compos. Lett., 2016, 25(2): 37.

[7] N. Saheb, Sintering behavior of CNT reinforced Al6061 and Al2124 nanocomposites, Adv. Mater. Sci. Eng., 2014(2014), art. No. 535640.

[8] Varol T, Çanakçı A, Öztürk A. The effect of reinforcement content on the contact performance of Cu-nanographite electrical contact materials. Prog. Mater. Sci. Eng., 2018, 1(1): 26.

[9] Pul M. Effect of B₄C reinforcement ratio and sintering temperature on the mechanical behavior in Al-B₄C composites. Sci. Sinter., 2018, 50(1): 51.

[10] Guo Z, Li N, Hu J. Cu-TiB metal matrix composites prepared by powder metallurgy route. Sci. Sinter., 2015, 47(2): 165.

[11] Padmavathi C, Upadhyaya A. Densification, microstructure and properties of supersolidus liquid phase sintered 6711Al-SiC metal matrix composites. Sci. Sinter., 2010, 42(3): 363.

[12] Islak S, Kır D, Buytoz S. Effect of sintering temperature on electrical and microstructure properties of hot pressed Cu-TiC composites. Sci. Sinter., 2014, 46(1): 15.

[13] Božić D, Stašić J, Rajković VM. Microstructures and mechanical properties of ZA27-Al₂O₃ composites bb-tained by powder metallurgy process. Sci. Sinter., 2011, 43(1): 63.

[14] International Organization for Standardization, ISO 4498: 2010: Sintered Metal Materials, Excluding Hardmetals-Determination of Apparent Hardness and Microhardness, Geneva, 2010.

[15] International Organization for Standardization, ISO 6506-1: 2014: Metallic Materials-Brinell Hardness Test-Part 1: Test Method, Geneva, 2014.

[16] ASTM International, ASTM B528-16: Standard Test Method for Transverse Rupture Strength of Powder Metallurgy (PM) Specimens, West Conshohocken, 2016.

[17] Sherif EM, Latief FH, Junaedi H, Almajid AA. Influence of exfoliated graphite nanoplatelets particles additions and sintering temperature on the mechanical properties of aluminum matrix composites. Int. J. Electrochem. Sci., 2012, 7, 4352.

[18] Senel MC, Gurbuz M, Koç E. The fabrication and characterization of graphene reinforced aluminum composites. Pamukkale Univ. J. Eng. Sci., 2017, 23(8): 974.

[19] N. Saheb, A. Khalil, A. S. Hakeem, T. Laoui, and N. Al-Aqeeli, Carbon nanotube reinforced Al6061 and Al2124 nanocomposites, [in] 15th European Conference on Composite Materials, Venice, 2012, p. 1.

[20] Garg P, Gupta P, Kumar D, Parkash O. Structural and mechanical properties of graphene reinforced aluminum matrix composites. J. Mater. Environ. Sci., 2016, 7(5): 1461.

[21] Jagadish BS. Synthesis and characterisation of aluminium 2024 and graphene metal matrix composites by powder metallurgy means. SSRG Int. J. Mech. Eng., 2015, 2(7): 14.