INVESTIGATION OF Cr EFFECT ON THE MICROSTRUCTURE AND TENSILE PROPERTIES OF AL-12Zn-2.5Mg-2.5Cu ALUMINUM ALLOY
Publish place: 1st International and 6th Joint Conference of Iranian Society of Metallurgical Engineers and the scientific community of Casting
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IMES06_048
تاریخ نمایه سازی: 8 بهمن 1391
Abstract:
In this study, the effect of Cr on the microstructure and tensile properties of Al-12Zn-2.5Mg-2.5Cu-0.05Ti aluminum alloy has been investigated. Microstructural examinations were performed byoptical and scanning electron microscopy, coupled with energy dispersive spectrometry. Microstructural studies showed that by adding Cr (from 0 to 5 wt. %) to the alloy, the volume fraction of precipitates in the matrix increases. Also, increasing Cr content showed an increase in ultimate tensile strength (UTS) values and marginal effect on ductility (% El.). The optimum amount of Cr was obtained. SEM fractography of fractured surfaces showed an overall brittle appearance with cracking along the grains and in the precipitates
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Authors
Nima mossayebi
M. Sc. Student, School of Metallurgy and Materials, School of engineering,University of Tehran
Masoud Emamy
Professor, School of Metallurgy and Materials, School of engineering, University of Tehran.
Jafar Rassizdehghani
Associate professor, School of Metallurgy and Materials, School of engineering, University of Tehran
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