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Phase evolution and microstructural characterization of high-energy ball milled Al-Si-Fe-Ni alloys

机译:高能球研磨Al-Si-Fe-Ni合金的相位演化与微观结构表征

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The effects of milling power and milling time on phase evolution during high-energy ball milling were investigated for the Al{sub}50Si{sub}30Fe{sub}15Ni{sub}5 alloy. Elemental powders were milled in a SPEX 8000 apparatus and the resulting powders were characterised by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Partially amorphous powders, together with the (Al, Si){sub}7Ni{sub}3 intermetallic compound, were obtained in early stages of milling. Silicon remained unreacted throughout long milling times, with particle size diminishing down to nanometric levels. Long milling times resulted in a single amorphous phase, though highly contaminated by the milling tools. Milling time and milling power showed a compensatory effect on the nature of phases obtained.
机译:研究了铣削功率和研磨时间对高能球磨过程中的相位演化的影响,对Al {Sub} 50Si {Sub} 30Fe {Sub} 15ni {Sub} 5合金。用X射线衍射(XRD)和差示扫描量热法(DSC)以X射线衍射(DSC)为特征在于SPEX 8000装置中的元素粉末。部分无定形粉末与(Al,Si){sub} 7ni {sub} 3金属间化合物一起获得铣削的早期阶段。硅保持在整个长铣削时间内未反应,粒度降低至纳米级。长铣削时间导致单个无定形相,虽然受铣削工具的高度污染。铣削时间和铣削功率对所获得的阶段的性质显示出补偿性作用。

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