中文摘要：

非结晶的艾尔 ₇₂ Ni ₈ Ti ₈ Zr ₆ Nb ₃ Y ₃ 粉末被机械 alloying 成功地制作。非结晶的艾尔 ₇₂ Ni ₈ Ti ₈ Zr ₆ Nb ₃ Y ₃ 粉末被 X 光检查调查衍射(XRD ) ，传播电子显微镜学(TEM ) ，和微分扫描热量测定(DSC ) 。等温的结晶化动力学被 Johnson-Mehl-Avrami 方程分析。在结果，非结晶的合金的 supercooled 液体区域象 81 K 一样高，作为由非等温的 DSC 曲线决定了。为结晶化的激活精力 ... 312.6 kJ 湯琠敨洠捩潲瑳畲瑣牵 ? 湡 ? 敭档湡捩污瀠潲数瑲敩 ? 景琠敨爠敨 ? 楤' 酞摌 N 杮? 高 ?? 猠浥 ? 潳楬??? 愠汬祯瀠敲慰敲 ? 桴潲杵 ? 異敲挠灯数 ? 敳灲湥楴敮挠慨湮汥眠牥 ? 湩敶瑳杩瑡摥 ? 桔 ? 敲?瑬 ? 湩楤慣整琠慨 ? 桴 ? 敭档湡捩污瀠潲数瑲敩 ? 景琠敨删 ? 猠浡汰獥挠慨杮? 楷桴琠敨瀠畯楲杮琠浥数慲畴敲愠摮椠橮' 虡 N 湯瀠敲獳牵 ??? 桴獩挠獡 ? 愠氠睯牥瀠畯楲杮琠浥数慲畴敲爠獥汵獴椠 ? 敢瑴牥琠湥楳敬猠牴湥瑧 ? 湡 ? 汥湯慧楴湯漠 ? 桴 ????? 愠汬祯※潨敷敶 ? 琠敨琠湥楳敬猠牴湥瑧 ? 湡 ?......

英文摘要：

Amorphous Al_（72）Ni_8Ti_8Zr_6Nb_3Y_3 powders were successfully fabricated by mechanical alloying. The microstructure, glass-forming ability, and crystallization behavior of amorphous Al_（72）Ni_8Ti_8Zr_6Nb_3Y_3 powders were investigated by X-ray diffraction（XRD）, transmission electron microscopy（TEM）, and differential scanning calorimetry（DSC）. The isothermal crystallization kinetics was analyzed by the Johnson-Mehl-Avrami equation. In the results, the supercooled liquid region of the amorphous alloy is as high as 81 K, as determined by-non-isothermal DSC curves. The activation energy for crystallization is as high as 312.6 kJ ·mol1 obtained by Kissinger and Ozawa analyses. The values of Avrami exponent（n） imply that the crystallization is dominated by interface-controlled three-dimensional growth in the early stage and the end stage and by diffusion-controlled two- or three-dimensional growth in the middle stage. In addition, the amorphous Al_（72）Ni_8Ti_8Zr_6Nb_3Y_3 powders were sintered under 2 GPa at temperatures of 673 K and 723 K. The results show that the Vickers hardness of the compacted powders is as high as Hv 1215.