Influences of Similar Elements on Glass Forming Ability and Magnetic Properties in Al-Ni-La Amorphous Alloy  

作　　者：Guihua Li Weimin Wang Xiufang Bian Li Wang Jiteng Zhang Rui Li Tao Huang 

机构地区：[1]Key Laboratory for Liquid-Solid Structureal Evolution and Processing of Materials, Ministry of Education, ShandongUniversity, Jinan 250061, China

出　　处：《Journal of Materials Science & Technology》2010年第2期146-150,共5页材料科学技术（英文版）

基　　金：the National Natural Science Foundation of China (Nos. 50871061, 50871062, 50831003and 50631010);the Excellent Youth Science and Technology Award of Shandong Province (No. 2008BS04020);the project NCET-06-584;the National Basic Research Program of China ("973 Program", No. 2007CB613901)for financial supports

摘　　要：Similar element substitution has been applied for improving glass forming ability （GFA） in AI86NigLa5 amor- phous alloy. The effects of La-Ce and Ni-Co pairs on the GFA, magnetic properties and hardness of Al-Ni-La alloy were investigated by using X-ray diffraction （XRD）, transmission electron microscopy （TEM）, differential scanning calorimetry （DSC）, magnetometer and hardness-tester. The results show the GFA of the samples in the order of Al86（Ni0.5Co0.5）9（La0.5Ce0.5）5〈 A186Ni9Las〈A186Ni9（La0.5Ce0.5）5, implying that similar element substitution has a limited enhancing effect on the GFA of the present Al-Ni-La alloy. In addition, the measured samples display a diamagnetic behavior at room temperature. The variations of diamagnetic behavior as well as the microhardness of the samples are strongly dependent on the microstructure, i.e., the amounts of the icosahedral structure and precipitates, after the similar element substitution in the Al-Ni-La alloy.Similar element substitution has been applied for improving glass forming ability （GFA） in AI86NigLa5 amor- phous alloy. The effects of La-Ce and Ni-Co pairs on the GFA, magnetic properties and hardness of Al-Ni-La alloy were investigated by using X-ray diffraction （XRD）, transmission electron microscopy （TEM）, differential scanning calorimetry （DSC）, magnetometer and hardness-tester. The results show the GFA of the samples in the order of Al86（Ni0.5Co0.5）9（La0.5Ce0.5）5〈 A186Ni9Las〈A186Ni9（La0.5Ce0.5）5, implying that similar element substitution has a limited enhancing effect on the GFA of the present Al-Ni-La alloy. In addition, the measured samples display a diamagnetic behavior at room temperature. The variations of diamagnetic behavior as well as the microhardness of the samples are strongly dependent on the microstructure, i.e., the amounts of the icosahedral structure and precipitates, after the similar element substitution in the Al-Ni-La alloy.

关 键 词：X-ray diffraction （XRD） Transmission electron microscopy （TEM） Diamagneticbehavior Icosahedral structure 

分 类 号：TG139.8[一般工业技术—材料科学与工程] TG146.21[金属学及工艺—合金]