添加合金元素Cu和Mn对锆合金中第二相的影响

上海大学学报(自然科学版)

添加合金元素Cu和Mn对锆合金中第二相的影响

曾奇锋，周邦新，姚美意，彭剑超，夏爽

上海大学材料研究所，上海 200072

收稿日期:2008-07-09 修回日期:1900-01-01 出版日期:2008-10-23 发布日期:2008-10-23
通讯作者: 周邦新

Effect of Alloying Element (Cu and Mn) Additions on the Precipitates of Zr Alloys

ZENG Qi-feng,ZHOU Bang-xin,YAO Mei-yi,PENG Jian-chao,XIA Shuang

Institute of Materials, Shanghai University, Shanghai 200072, China

Received:2008-07-09 Revised:1900-01-01 Online:2008-10-23 Published:2008-10-23
Contact: ZHOU Bang-xin

摘要/Abstract

摘要：

以Zr-4为母合金，分别添加电解纯铜或电解金属锰，用非自耗真空电弧炉熔炼了成分不同的6种锆合金.用透射电子显微镜观察了合金中第二相的形貌，用EDS分析了第二相的成分，用SAD确定了第二相的晶体结构.添加Cu元素的合金中有3种第二相：Zr(Fe,Cr)₂粒子、Zr(Fe,Cr,Cu)₂粒子和含少量Fe或不含Fe的Zr-2Cu粒子；添加Mn元素的合金中只有1种Zr(Fe,Cr,Mn)₂第二相，且随着合金中Mn的质量分数从0.07%增加到0.35％，Zr(Fe,Cr,Mn)₂粒子中Mn元素的质量分数也升高.

关键词: 第二相, 锆合金, 合金元素, 显微组织

Abstract: A series of zirconium alloys with copper and manganese additions in Zircaloy-4 were prepared using a vacuum non-consumable arc melting method. TEM observationwas carried out to characterize precipitates in alloys. The crystal structure was determined by a selected area electron diffraction (SAD) pattern, and the composition of precipitates was analyzed with energy dispersion spectroscopy (EDS). In the copper-added Zircaloy-4 specimens, three main precipitates were detected: (1) Zr(Fe,Cr)₂ precipitates, (2) Zr(Fe,Cr,Cu)₂ precipitates, and (3) Zr₂Cuprecipitates with a bit of Fe or without Fe. In the manganese-added Zircaloy-4 specimens, only one kind of Zr(Fe,Cr,Mn)₂ precipitate was observed. Mn content in the precipitates increased as the increase of Mn content from 0.07% to 0.35% in the alloy.

Key words: alloying element, microstructure, precipitates
, zirconium alloys

中图分类号:

TL 341

曾奇锋;周邦新;姚美意;彭剑超;夏爽. 添加合金元素Cu和Mn对锆合金中第二相的影响[J]. 上海大学学报(自然科学版).

ZENG Qi-feng;ZHOU Bang-xin;YAO Mei-yi;PENG Jian-chao;XIA Shuang. Effect of Alloying Element (Cu and Mn) Additions on the Precipitates of Zr Alloys
[J]. Journal of Shanghai University（Natural Science Edition）.

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