Crystallization and Microstructure Evolution of Amorphous Al85Y4Nd4Fe7 Alloy
来源期刊：JOURNAL OF RARE EARTHS2005年第1期
论文作者：Su Yong Li Gongpu Wu Wei CHEN Yuanxi Hu Lei CHEN Yiqing
Key words：melt spinning; amorphous alloys; Al-Y-Nd-Fe alloy; rare earths;
Abstract: A rapidly solidified Al85Y4Nd4Fe7 (%, in nominal atomic fraction) alloy was prepared by melt spinning. As-quenched and as-annealed microstructures were studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Fully amorphous structure could be obtained in the rapidly solidified Al85Y4Nd4Fe7 alloy ribbons. The temperature of first crystallization exceeds 300 ℃. Crystallization of as-annealed Al85Y4Nd4Fe7 alloy is shown to occur in two stages: (1) primary crystallization of α-Al; (2) formation of Al3Y, Al13Fe4 and unknown crystalline phases.
Su Yong1，Li Gongpu2，Wu Wei1，CHEN Yuanxi1，Hu Lei1，CHEN Yiqing1
(1.School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China;
2.Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China)
Abstract:A rapidly solidified Al85Y4Nd4Fe7 (%, in nominal atomic fraction) alloy was prepared by melt spinning. As-quenched and as-annealed microstructures were studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Fully amorphous structure could be obtained in the rapidly solidified Al85Y4Nd4Fe7 alloy ribbons. The temperature of first crystallization exceeds 300 ℃. Crystallization of as-annealed Al85Y4Nd4Fe7 alloy is shown to occur in two stages: (1) primary crystallization of α-Al; (2) formation of Al3Y, Al13Fe4 and unknown crystalline phases.
Key words:melt spinning; amorphous alloys; Al-Y-Nd-Fe alloy; rare earths;
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