Overview of fatigue crack initiation in carbon and low-alloy steels in light water reactor environments

被引：22

作者：

Chopra, OK ^{[1
]}

Shack, WJ ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA

来源：

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME | 1999年 / 121卷 / 01期

关键词：

D O I：

10.1115/1.2883667

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Recent test data illustrate potentially significant effects of light water reactor (LWR) coolant environments on the fatigue resistance of carbon and low-alloy steels. The crack initiation and crack growth characteristics of carbon and low-alloy steels in LWR environments are presented Decreases in fatigue lives of these steels in high-dissolved-oxygen water are caused primarily by the effect of environment on growth of short cracks <100 mu m in depth. The material and loading parameters that influence fatigue life in LWR environments are defined. Statistical models have been developed to estimate the fatigue lives of these steels in LWR environments, and design fatigue curves have been developed for carbon and low-alloy steel components in LWR environments. The significance of environmental effect on the current Code design curve is evaluated.

引用

页码：49 / 60

页数：12

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