EFFECT OF COMPOSITION AND MILLING TIME ON THE SYNTHESIS OF NANOSTRUCTURED Ni-Cu ALLOYS BY MECHANICAL ALLOYING METHOD
محل انتشار: مجله علم مواد و مهندسی ایران، دوره: 10، شماره: 3
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 58
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شناسه ملی سند علمی:
JR_IJMSEI-10-3_004
تاریخ نمایه سازی: 26 مرداد 1402
چکیده مقاله:
Ni and Cu elemental powder mixtures containing ۲۵, ۵۰, and ۷۵% at Cu were subjected to mechanical alloying in a planetary ball mill under various milling times. Structural evolution was analyzed by means of X-ray diffraction and scanning electron microscopy. Experimental results indicated that nanostructured solid solution alloy powders having homogeneous distribution of Ni and Cu were formed by milling-induced interdiffusion of the elements. Average crystallite size of the as-milled powders was decreased with increasing Ni content and milling duration, and found to be in the order of ۱۵-۴۰ nm after ۳۰ h of milling for all powder compositions. Moreover, lattice parameter and lattice strain of solid solutions were increased with the time of MA, which was more intense for nickel-rich alloys
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