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Glass Formation and Thermal Stability in Rapidly Solidified Al-Fe-V-Si Alloy with Misch Metal Additions 被引量:1

Glass Formation and Thermal Stability in Rapidly Solidified Al-Fe-V-Si Alloy with Misch Metal Additions
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摘要 A new amorphous Al(87.3)Fe(4.3)V(0.7)Si(1.7)Mm(6.0)(Mm: misch metal) was prepared by using melt-spinning technique. Differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray (EDX) have been used to investigate the crystallization behaviour of this amorphous alloy. It is found that the crystallization process can be concluded as follows: amorphous --> amorphous plus fcc-Al --> fcc-Al plus Al-11(La,Ce)(3) plus i-phase (icosahedral) --> fee-Al plus Al-11(La,Ce)(3) plus i-phase plus ic-phase (icosahedral compounds). The results of microhardness measurement show that HV values are higher than those in AI-Fe-V-Si based alloy, and the maximum HV value corresponds to the coexisting of nanoscale Al particles and i-phase. A new amorphous Al(87.3)Fe(4.3)V(0.7)Si(1.7)Mm(6.0)(Mm: misch metal) was prepared by using melt-spinning technique. Differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray (EDX) have been used to investigate the crystallization behaviour of this amorphous alloy. It is found that the crystallization process can be concluded as follows: amorphous --> amorphous plus fcc-Al --> fcc-Al plus Al-11(La,Ce)(3) plus i-phase (icosahedral) --> fee-Al plus Al-11(La,Ce)(3) plus i-phase plus ic-phase (icosahedral compounds). The results of microhardness measurement show that HV values are higher than those in AI-Fe-V-Si based alloy, and the maximum HV value corresponds to the coexisting of nanoscale Al particles and i-phase.
出处 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1996年第1期11-14,共4页 材料科学技术(英文版)
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