Effect of hydrogen on the creep of the ultrafine-grained zirconium Zr-1Nb alloy at 673 K

被引：13

作者：

Grabovetskaya, G. P. ^{[1
]}

Stepanova, E. N. ^{[2
]}

Dubrovskaya, A. S. ^{[2
]}

机构：

[1] Russian Acad Sci, Fed State Inst Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk, Russia

[2] Natl Res Tomsk Polytech Univ, Tomsk, Russia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 35期

基金：

俄罗斯基础研究基金会;

关键词：

Zirconium alloy; Ultrafine-grained structure; Creep; Hydrogen; MECHANICAL-PROPERTIES; MICROSTRUCTURE; DEFORMATION; BEHAVIOR; HYDRIDES; CRACKING; STORAGE; ZR;

D O I：

10.1016/j.ijhydene.2017.03.118

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：

Comparative studies of the effect of hydrogenation to concentrations of 0.33 wt% on the behavior of the creep of Zr-1wt% Nb (hereinafter Zr-1Nb) alloy in fine-grained (d(ay) =4 gm) and ultrafine-grained (d(ay) = 0.45 gm) states are performed for the creep rates in the interval 10(-7)-10(-5) s(-1) at a temperature of 673 K. Hydrogenation to concentration of 0.33 wt% is found to lead to a decrease in the steady creep rate and increase in the time to failure with simultaneous decrease in the value of deformation to failure. Possible mechanisms of deformation of the ultrafine-grained alloy under examined creep conditions are discussed. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：22633 / 22640

页数：8

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