锆合金第二相研究述评(Ⅱ):Zr-Sn-Nb-Fe系合金  

Review of second phase particles on zirconium alloys(Ⅱ): Zr-Sn-Nb-Fe alloys

作　　者：邱日盛[1] 栾佰峰[1] 柴林江[1] 周宇[1] 陈建伟[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《中国有色金属学报》2012年第6期1605-1615,共11页The Chinese Journal of Nonferrous Metals

基　　金：中央高校基本科研业务费专项资金资助(CDJZR10130008;CDJXS10132201);教育部新世纪优秀人才支持计划资助(NCET-08-0606)

摘　　要：对国内外关于Zr-Sn-Nb-Fe系新锆合金中第二相粒子的研究情况进行评述,并重点探讨不同种类Zr-Nb-Fe析出相的成分、晶体结构及其形成机制和条件。合金中的Zr-Nb-Fe析出相有两种:一种为六方结构的MgZn2型Zr(Nb,Fe)2Laves相,其形成与合金中作为杂质存在的Cr元素有关;另一种为立方结构的Ti2Ni型(Zr,Nb)2Fe相,与合金中普遍含有的O元素有关。对大量不同成分的Zr-Sn-Nb-Fe系合金的检测证实,可以用一个由合金中Nb和Fe含量确定的R*参数来分析其成分变化时合金中可能出现的析出相类型。The investigations of the second phase particles （SPPs） in Zr-Sn-Nb-Fe new zirconium alloys at home and abroad were reviewed, paying close attention to the composition, crystallographic structure and formation mechanism and condition of various Zr-Nb-Fe SPPs. There are two types of Zr-Nb-Fe SPPs： one is C14 （HCP, MgZn2） Zr（Nb, Fe）2 whose formation relates to the impurity element of Cr, and the other is C15 （FCC, Ti2Ni） （Zr, Nb）2Fe particle for which oxygen plays a very important role. The examination to large mounts of Zr-Sn-Nb-Fe alloys with various compositions testifies that a parameter, R＊, which is determined by Nb and Fe contents, can be successfully used to deduce which types of SPPs will mainly present when changing alloy compositions.

关 键 词：Zr-Sn-Nb-Fe新锆合金 第二相 Zr(Nb Fe)2 (Zr Nb)2Fe 

分 类 号：TG146.4[一般工业技术—材料科学与工程]