J. Mater. Sci. Technol. ›› 2014, Vol. 30 ›› Issue (12): 1262-1270.DOI: 10.1016/j.jmst.2014.10.003

• Orginal Article • Previous Articles     Next Articles

Crystallization of Al-based Amorphous Alloys in Good Conductivity Solution

Yonggang Wang1, Yan Liu1, Yingjie Li1, Bang An1, Guanghui Cao2, Shifeng Jin3, Yimin Sun1, Weimin Wang1   

  1. 1、Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China; 2、Institute of Materials Science and Engineering, Shanghai University, Shanghai 200072, China; 3、Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2014-01-10 Revised:2014-05-18 Online:2014-12-20 Published:2015-07-23
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (No. 51171091, 51471099), the Excellent Youth Project of Shandong Natural Science Foundation (No. JQ201012) and the National Basic Research Program of China (“973 Program”, No. 2012CB825702).

Abstract: The corrosion-induced crystallization of Al94-xNixGd6 (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 Rc of 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.

Key words: Crystallization, Oxidation, Percolation of backbone cluster, Al-based glassy alloy