DENSIFICATION AND MICROSTRUCTURE CHARACTERISTICS OF A PREALLOYED ALPHA BRASS POWDER PROCESSED BY LIQUID PHASE SINTERING
محل انتشار: مجله علم مواد و مهندسی ایران، دوره: 11، شماره: 3
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 89
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شناسه ملی سند علمی:
JR_IJMSEI-11-3_009
تاریخ نمایه سازی: 26 مرداد 1402
چکیده مقاله:
The rapidly solidified prealloyed alpha brass powder with a size range of ۴۰ to ۱۰۰ μm produced by water
atomization process was consolidated using liquid phase sintering process. The relationships between sintering
temperature, physic-mechanical properties and microstructural characteristics were investigated. Maximum
densification was obtained at ۹۳۰ °C, under ۶۰۰ MPa compacting pressure, with ۶۰ min holding time. The
microstructure of the sintered brass was influenced by dezincification and structural coarsening during supersolidus
liquid phase sintering. As a consequence of Kirkendall effect atomic motion between Cu and Zn atoms caused to
dezincification at the grain boundaries and formation of ZnO particles on the pore surfaces. It was concluded that
microstructural analysis is in a well agreement with obtained physical and mechanical properties. Also, the amount of
liquid phase, which depends on sintering temperature, results in different load bearing cross section areas, and it
affects the type of fracture morphologies.
کلیدواژه ها:
نویسندگان
A. Mohammadzadeh
Department of Materials Engineering, Sahand University of Technology, Tabriz, Iran.
A. Sabahi Namini
Department of Materials Engineering, Sahand University of Technology, Tabriz, Iran.
M. Azadbeh
Department of Materials Engineering, Sahand University of Technology, Tabriz, Iran.