%0 Journal Article
%T E/A-CONSTANT PHENOMENA IN TI-ZR-NI-CU GLASS-FORMING SYSTEM<br>Ti-Zr-Ni-Cu非晶系的等电子浓度特征
%A QIANG Jianbing
%A HUANG Huogen
%A WANG Qing
%A XIA Junhai
%A DONG Chuang
%A <br>羌建兵
%A 黄火根
%A 王清
%A 夏俊海
%A 董闯
%J 金属学报
%D 2006
%I 
%X A series of alloys with e/a (i.e. valence electron per atom) value of 1.200 and Ra (average atomic size) of 0.1474 nm has been designed in Ti-Zr-Ni-Cu system based on the quasicrystals-forming composition Ti40Zr40Ni20, then the alloy rods with diameter of 3 mm were fabricated by the conventional suction casting method. The experiments showed that a bulk glass alloy can be obtained in the vicinity of Ti12Zr55Ni13Cu20, and at the compositions of Ti3Zr60Ni12Cu25 and Zr60Ni10Cu30 the another glass-related phase tI-Zr2Cu is formed. The above quasicrystal, bulk metallic glass and tI-Zr2Cu phase are a group of electronic compounds with nearly same e/a, indicating that the e/a-constant criterion is valid for Ti-Zr-Ni-Cu glass forming system. Meanwhile, the structural correlations between the icosahedron and truncated octahedron clusters (Zr2Cu) can be considered as a structural model to describe the polymorphous transformation from quacrystals or metallic glass to Zr2Cu-type phase.
%K Ti-Zr-Ni-Cu system
%K bulk metallic glass
%K e/a-constant criteria
%K glass-related phase
%K quasicrystal<br>Ti-Zr-Ni-Cu系
%K 块体非晶
%K 等电子浓度
%K 非晶相关相
%K 准晶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=AF0D0202ADAA6CD4&yid=37904DC365DD7266&vid=ECE8E54D6034F642&iid=B31275AF3241DB2D&sid=B4F9D541F855CF96&eid=2497388423811B81&journal_id=0412-1961&journal_name=金属学报&referenced_num=1&reference_num=22