Influence of simultaneous addition of Al-5Ti-1B and Al-10Ca on the structure and mechanical properties of A356 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_233
تاریخ نمایه سازی: 8 بهمن 1391
Abstract:
Combinations of Al-5Ti-1B and Al-10Ca master alloys have been used to study their effects on the structure and mechanical properties of cast A356 alloy. Al-5Ti-1B and Al-10Ca master alloys were added to the moltenA356 alloy to produce different levels of Ti (0.01, 0.05 and 0.1) and Ca (0.01, 0.03 and 0.05) in the castings. From macrostructure studies the optimum amount of Ti was found to be 0.01%. The addition of Ca showed that Si crystals in the microstructure of thealloy changes from acicular to refined morphology to some extent. Significant improvement on tensile properties obtained from simultaneous addition of grain refinement and modification. The results showed that as the mount of Ca increases (up 0.05%Ca), UTS value increases from 210 MPa to 310 MPa.
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Authors
Amir Hossein Pourmonshi
Department of Material Science Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
Massoud Emamy
School of Material and Metallurgy Engineering, University of Tehran, Tehran, Iran
Seyed Ehsan Vaziri Yeganeh
Imam Khomeini International University, Qazvin, Iran
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