Structural and phase transformations in quenched and aged Zr-Ru alloys

被引：16
|
作者：
Taluts, NI [1 ]
Dobromyslov, AV [1 ]
Elkin, VA [1 ]
机构：
[1] Russian Acad Sci, Inst Met Phys, Ural Div, Sverdlovsk 620219, Russia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 282卷 / 1-2期
关键词：
metastable phase; phase relationships; Zr-rich alloys; Zr-Ru alloys;
D O I：
10.1016/S0925-8388(98)00851-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
X-ray diffraction, optical metallography, transmission electron microscopy, and hardness measurements were used to study the phase composition and microstructure of the quenched and aged Zr-Ru alloys containing from 0.25 to 5 at.% ruthenium. It was established that a two-phase microstructure, consisting of the alpha-phase and a beta-phase enriched with ruthenium, is formed during quenching of the alloys containing up to 1 at.% ruthenium. A metastable omega-phase is formed in the alloys containing from 1.5 to 4 at.% ruthenium. Only a diffuse omega-phase is observed in the Zr-5 at.% Ru alloy after quenching. The metastable omega-phase is formed in this alloy after aging at 400 degrees C for 30 min. The omega-phase remains present in the Zr-1.5 at.% Ru alloy after aging at 500 degrees C for 3 h and in the Zr-5 at.% Ru alloy after aging at 500 degrees C for 22 h. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：187 / 196
页数：10
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