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

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International Journal of Minerals,Metallurgy and Materials 2020年第2期27卷 232-243页

作者： Muharrem Pul Department of Electric and Energy Kirikkale University Kirikkale 71450 Turkey

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 ***,transverse rupture,and abrasion wear tests were performed to determine the mechanical *** 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 ***,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.

关键词： nanocomposite zinc aluminum alloy graphene microstructure sintering mechanical property

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Effects of solidification and melt treatment on microstructure and mechanical properties of cast ZA27 alloy

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中国有色金属学报 2001年第Z1期11卷 63-67页

作者：马颖陈体军郝远张德良 Department of Materials Engineering Gansu University of Technology Department of Technology The University of Waikato University Hamilton

The effects of solidification rate, modifications and pouring temperature on the microstructure and mechanical properties of casting zinc aluminum alloy ZA27 have been investigated. The results show that the number and distribution of pores are the key factors affecting the mechanical properties of ZA27. A slow solidification rate is beneficial to the ductility, while a rapid solidification rate improves the tensile strength of alloy basically. Among the modification agents RE, Sb Te, Sb Te RE and Sb Te Ti B, the addition of Sb Te to melt results in the best modified microstructure. The optimum pouring temperature for ZA27 is approximately 550?℃.

关键词： zinc aluminum alloy porosity mechanical properties solidification microstructure

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