节点文献

Effect of pre-annealing on thermal stability of amorphous Zr-Cu-Ni alloy

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 LIU Yan , HUI Xidong , and WANG Huanrong1) Department of Materials Science and Engineering, Shandong Institute of Architecture and Engineering, Jinan 250014, China2) State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China3) Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, China

【摘要】 <正> The influence of pre-annealing on thermal stability of the amorphous Zr70Cu20Ni10 alloy was reported by em-ploying the differential scanning calorimetry (DSC) and high-resolution transmission electron microscopy (HRTEM) tech-niques. It has been observed that the supercooled liquid region decreases with increasing the annealing time under isothe-mal conditions, indicating that the thermal stability of the amorphous Zr70Cu20Ni10 alloy decreases gradually. HRTEM ob-servations reveal that there exist some ordered atomic clusters in the amorphous matrix at the relaxation stage. These or-dered atomic clusters can be regarded as precursors for the precipitation of the crystalline phases in the subsequent crystal-lization process. The reasons resulting in the decrease in thermal stability of the amorphous Zr70Cu20Ni10 alloy with anneal-ing time are discussed through the Gaussian decomposition for the radial distribution function of the amorphous Zr70Cu20Ni10 alloy.

【Abstract】 The influence of pre-annealing on thermal stability of the amorphous Zr70Cu20Ni10 alloy was reported by em-ploying the differential scanning calorimetry (DSC) and high-resolution transmission electron microscopy (HRTEM) tech-niques. It has been observed that the supercooled liquid region decreases with increasing the annealing time under isothe-mal conditions, indicating that the thermal stability of the amorphous Zr70Cu20Ni10 alloy decreases gradually. HRTEM ob-servations reveal that there exist some ordered atomic clusters in the amorphous matrix at the relaxation stage. These or-dered atomic clusters can be regarded as precursors for the precipitation of the crystalline phases in the subsequent crystal-lization process. The reasons resulting in the decrease in thermal stability of the amorphous Zr70Cu20Ni10 alloy with anneal-ing time are discussed through the Gaussian decomposition for the radial distribution function of the amorphous Zr70Cu20Ni10 alloy.

【关键词】 pre-annealing； thermal stability； amorphous alloy； Gaussian decomposition； DSC； HRTEM；
【Key words】 pre-annealing； thermal stability； amorphous alloy； Gaussian decomposition； DSC； HRTEM；
【基金】 This work is financially supported by the National Natural Science Foundation of China (No.59871025 and 50171006),Hi-tech Research;Development Program of China(863)(No.2001AA331010);National Major Basic Research Project of China(973)(No.G2000 6720
  • 【文献出处】 Rare Metals ,稀有金属(英文版) , 编辑部邮箱 ,2003年04期
  • 【分类号】TG13
  • 【被引频次】1
  • 【下载频次】23
打印本页
节点文献中：