Influence of Modification of the Surface Layer by Penetrating Impurities on the Long-Term Strength of Zr-1% Nb Alloy

被引：11

作者：

Trush, V. S. ^{[1
]}

Lukianenko, O. H. ^{[1
]}

Stoev, P., I ^{[2
]}

机构：

[1] Ukrainian Natl Acad Sci, Karpenko Physicomech Inst, Lvov, Ukraine

[2] Ukrainian Natl Acad Sci, Kharkiv Physicotech Inst Natl Sci Ctr, Inst Solid State Phys Mat Sci & Technol, Kharkiv, Ukraine

来源：

MATERIALS SCIENCE | 2020年 / 55卷 / 04期

关键词：

zirconium alloy; near-surface layer; thermochemical treatment; oxygen; and nitrogencontaining gas atmospheres; long-term strength; fractography;

D O I：

10.1007/s11003-020-00342-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the influence of modification of the surface layer of a metal in gaseous atmospheres on the long-term strength of Zr-1% Nb alloy at room temperature (20 degrees C). It is discovered that the procedures of treatment in oxygen-containing (580 degrees C; 1.33 Pa; 0.5 h under a pressure of 1.33 center dot 10(-2) Pa , and tau = 2.5 h) and nitrogen-containing (580 degrees C; 1.33 center dot 10(- 3)Pa; 1 h under a nitrogen pressure of 1 center dot 10(5) Pa , and tau = 9 h) atmospheres are accompanied by the formation of diffusion-hardened near-surface layers and lead to an increase in the long-term strength of annular specimens at room temperature on a base of 100 h as compared with the standard treatment in a vacuum (580 degrees C; 1.33 center dot 10(-2) Pa , and 3 h).

引用

页码：585 / 589

页数：5

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