Influence of B,Al and Nb addition on the glass forming ability and stability of mechanically alloyed Zr-Ni amorphous alloys  

作　　者：WANG Yan DING JunFeng BAI YanWen 

机构地区：[1]School of Materials Science and Engineering, University ofJinan, Jinan 250022, China [2]Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, Shandong University, Jinan 250061, China

出　　处：《Chinese Science Bulletin》2011年第36期3919-3925,共7页

基　　金：supported by the National Natural Science Foundation of China (50801031);the Doctoral Foundation of University of Jinan (XBS1009)

摘　　要：We investigated the influence of minor additions of B,Al and Nb that have representative atomic sizes on the glass forming ability (GFA) and stability of Zr-Ni amorphous alloys during mechanical alloying. The results show that the minor addition of B,Al or Nb does not shorten the initial time of the full amorphization reaction or improve the glass forming ability of the Zr-Ni alloys at a low rotation speed. However,B addition can effectively improve the mechanical stability of the amorphous phase against mechanically induced crystallization. Furthermore,the amorphous phase gradually transforms into a metastable fcc-phase with increasing milling time. The addition of Al and Nb that have similar atomic sizes has a similar effect on the GFA and the mechani-cal stability of the Zr-Ni amorphous phase. Moreover,Al and Nb addition can alter the crystallization behavior and improve the thermal stability of the Zr-Ni amorphous phase.We investigated the influence of minor additions of B,Al and Nb that have representative atomic sizes on the glass forming ability （GFA） and stability of Zr-Ni amorphous alloys during mechanical alloying. The results show that the minor addition of B,Al or Nb does not shorten the initial time of the full amorphization reaction or improve the glass forming ability of the Zr-Ni alloys at a low rotation speed. However,B addition can effectively improve the mechanical stability of the amorphous phase against mechanically induced crystallization. Furthermore,the amorphous phase gradually transforms into a metastable fcc-phase with increasing milling time. The addition of Al and Nb that have similar atomic sizes has a similar effect on the GFA and the mechani-cal stability of the Zr-Ni amorphous phase. Moreover,Al and Nb addition can alter the crystallization behavior and improve the thermal stability of the Zr-Ni amorphous phase.

关 键 词：玻璃形成能力 机械合金化 机械稳定性 非晶合金 NI合金 Zr 铝 铌 

分 类 号：TG139.8[一般工业技术—材料科学与工程] TQ331.2[金属学及工艺—合金]