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International Journal of Engineering، جلد ۲۴، شماره ۱، صفحات ۴۹-۵۳
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Effect of Mold Preheating on the Microstructure of the Investment Cast Astm F-75 Implant Alloy |
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| چکیده انگلیسی مقاله |
The ASTM F-75 (Co-28%Cr-6%Mo) is widely used as a biocompatible alloy in medicinefor manufacturing implants. In this study, effect of mold preheating on the as-cast microstructure of thealloy was investigated using the solid investment casting process. Several mold preheating temperaturesof 550, 700, 850 and 1000 °C were selected at the same melt superheat. The samples were characterizedby optical microscopy, electron microscopy and macro-hardness test. The results showed that the size ofgrains and secondary carbides of the matrix was increased by increasing the mold preheatingtemperature. In addition, morphology of the M23C6 carbides was changed from the eutectic carbidesprecipitated in grain boundaries to the blocky shape precipitated in both carbide interface and dendriticmatrix. The appropriate microstructure with nearly fine grains with homogeneous distribution ofsecondary phases was obtained at mold preheating temperature of about 850 °C. |
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| کلیدواژه‌های انگلیسی مقاله |
Investment cast, Mold preheating, Microstructure, Co alloy |
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| نویسندگان مقاله |
Mohsen Fatahi |
Faculty of Engineering, Islamic Azad University Ahvaz Branch
Ahmad Kermanpur |
Materials Science and Engineering, Isfahan University of Technology
Mahmood Meratian |
Materials Science and Engineering, Isfahan University of Technology
Hossein Ghazvinizadeh |
Materials Engineering, Isfahan University of Technology
Hossein Minouei |
Materials Science and Engineering, Isfahan University of Technology
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| نشانی اینترنتی |
http://www.ije.ir/article_71884_d37b6eb246c12de2e1e9ad63140d7562.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/409/article-409-2417089.pdf |
| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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