A STUDY OF THE DISTRIBUTION OF NB AND FE IN 2-PHASE ZR-2.5 WT-PERCENT NB ALLOYS

被引：31

作者：

PEROVIC, A ^{[1
]}

PEROVIC, V ^{[1
]}

WEATHERLY, GC ^{[1
]}

PURDY, GR ^{[1
]}

FLECK, RG ^{[1
]}

机构：

[1] ONTARIO HYDRO,RES LABS,TORONTO M8Z 5S4,ONTARIO,CANADA

来源：

JOURNAL OF NUCLEAR MATERIALS | 1993年 / 199卷 / 02期

关键词：

D O I：

10.1016/0022-3115(93)90286-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An analytical transmission electron microscopy study of two-phase (alpha-beta) structures in a Zr-2.5 wt% Nb pressure tube alloy was used to follow the distribution of Nb and Fe as a function of alloy heat treatment and tube processing. The presence of Fe (approximately 0.1 wt%) modifies the (alpha - beta) phase equilibria as Fe is a beta-stabilizing element. Significant segregation of Fe to beta(Zr) and beta(Nb) structures was measured and shown to be in good agreement with the prediction of a graphical method used to find the phase boundaries in the ternary diagram (at the Zr corner) from the binary data. Segregation of Fe at alpha - alpha subboundaries was found in the as-extruded and cold-worked plus stress-relieved treatments. The Fe profiles, measured across subboundaries. indicated a strong segregation of Fe to the core or near-core regions of the dislocations comprising the boundary structure.

引用

页码：102 / 111

页数：10

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