Creep-fatigue crack behaviour of a mod. 9Cr-1Mo steel structure with weldments

被引：11

作者：

Lee, Hyeong-Yeon ^{[1
]}

Kim, Jong-Bum ^{[1
]}

Kim, Woo-Gon ^{[1
]}

Lee, Jae-Han ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Taejon 305353, South Korea

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2010年 / 63卷 / 2-3期

关键词：

creep-fatigue; crack initiation; crack growth; Mod; 9Cr-1Mo; RCC-MR A16;

D O I：

10.1007/s12666-010-0033-x

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

An assessment of a creep-fatigue crack initiation and growth for a Mod. 9Cr-1Mo steel structure with weldments has been carried out based on an extended French RCC-MR A16 procedure. The A16 defect assessment guide provides assessment procedures for a creep-fatigue crack initiation and growth for an austenitic stainless steel, but no guidelines are available yet for a Mod. 9Cr-1Mo steel. A creep-fatigue structural test was carried out for a Mod. 9Cr-1Mo specimen with two hours of a hold time at 873 K and various primary nominal stresses. sigma (d) approach was employed to evaluate a creep-fatigue crack initiation, and an assessment of a creep-fatigue crack growth at a defect has also been carried out. The evaluation results were compared with the observed images from the structural test.

引用

页码：245 / 250

页数：6

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