کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
795736 1466776 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spray forming and wear characteristics of liquid immiscible alloys
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Spray forming and wear characteristics of liquid immiscible alloys
چکیده انگلیسی

Alloys based on Al–Pb and Cu–Pb systems were gas atomized and spray deposited over a copper substrate. Microstructural examination of Cu–20Pb alloy indicated an equiaxed grain morphology of the primary α-phase with dispersion of Pb particles along the grain boundary and inter-granular regions. A wide size rage of atomised powder particles of this alloy showed cellular-dendritic morphology of the primary α-phase. The microstructure of spray formed Al–4Cu–20Pb alloy revealed a uniform distribution of ultrafine Pb particles in Al-matrix in contrast to a bimodal size distribution of Pb particles in atomised powder particles. Microstructural homogeneity was observed in both the atomized powders and spray formed alloys. The wear rate of Cu–20Pb alloy was observed to be higher than that of Al–4Cu–20Pb alloy at low load and sliding velocity. However, the former indicated a low wear rate in severe wear regime of high load and sliding velocity. The mode of solidification of liquid immiscible alloys during spray forming process is discussed and the wear behaviour of these alloys is analysed in light of their microstructural features.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 189, Issues 1–3, 6 July 2007, Pages 224–230
نویسندگان
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