Crystallization of Al-based Amorphous Alloys in Good Conductivity Solution  

作　　者：Yonggang Wang Yan Liu Yingjie Li Bang An Guanghui Cao Shifeng Jin Yimin Sun Weimin Wang 

机构地区：[1]Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University [2]Institute of Materials Science and Engineering, Shanghai University [3]Institute of Physics, Chinese Academy of Sciences

出　　处：《Journal of Materials Science & Technology》2014年第12期1262-1270,共9页材料科学技术（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No. 51171091, 51471099);the Excellent Youth Project of Shandong Natural Science Foundation (No. JQ201012);the National Basic Research Program of China ("973 Program", No. 2012CB825702)

摘　　要：The corrosion-induced crystallization of Al94 exNixGd6（x=6 and 10, in at.%） metallic glasses as well as phase separation, oxidation and cracking in good conductivity solution has been investigated by various techniques.The transmission electronic microscopy（TEM） result reveals that crystalline intermetallics and oxides present on the electrochemically thinned hole edge, and the phase separation occurs in the matrix of the as-spun ribbons with the circumferential speed Rcof 29.3 m/s. In addition, the bending and cracking of the samples occur after corrosion. The influence of Ni content on the phase separation, bending and cracking can be explained by the fact that the percolation of the backbone clusters in the amorphous alloy melts and glasses is enhanced by increasing the composition of Ni.The corrosion-induced crystallization of Al94 exNixGd6（x=6 and 10, in at.%） metallic glasses as well as phase separation, oxidation and cracking in good conductivity solution has been investigated by various techniques.The transmission electronic microscopy（TEM） result reveals that crystalline intermetallics and oxides present on the electrochemically thinned hole edge, and the phase separation occurs in the matrix of the as-spun ribbons with the circumferential speed Rcof 29.3 m/s. In addition, the bending and cracking of the samples occur after corrosion. The influence of Ni content on the phase separation, bending and cracking can be explained by the fact that the percolation of the backbone clusters in the amorphous alloy melts and glasses is enhanced by increasing the composition of Ni.

关 键 词：CRYSTALLIZATION Oxidation Percolation of backbone cluster Al-based glassy alloy 

分 类 号：TG139.8[一般工业技术—材料科学与工程] TQ464[金属学及工艺—合金]