Radiation embrittlement of VVER-1000 vessel materials

被引：3

作者：

Nikolaeva, AV ^{[1
]}

Nikolaev, YA ^{[1
]}

Kevorkyan, YR ^{[1
]}

机构：

[1] Russian Sci Ctr, Kurchatov Inst, Moscow, Russia

来源：

ATOMIC ENERGY | 2001年 / 90卷 / 05期

关键词：

D O I：

10.1023/A:1011320424376

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Radiation embrittlement of VVER-1000 vessel materials has been studied much less than for VVER-440 reactors. In the present paper the results of an investigation of the first batches of control samples of VVER-1000 vessel materials are discussed. The chemical composition of the materials is characterized by a low content of harmful impurities (copper and phosphorus) and a high nickel content (up to 1.9% in some weld seams). The actual rate of radiation embrittlement of the material studied is comparable to the embrittlement calculated using the Russian standards. The dependence of radiation embrittlement of VVER-1000 vessel materials on the metallurgical variables and the damaging dose is studied. The investigation showed that nickel greatly intensifies the radiation embrittlement. New relations were developed for determining the actual rate of radiation embrittlement of VVER-1000 reactor vessel materials and assessment of its conservativeness.

引用

页码：374 / 381

页数：8

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