Review of allowable stress and new guideline of long-term creep strength assessment for high Cr ferritic creep resistant steels

被引：9
|
作者：
Kimura, Kazuhiro [1 ]
机构：
[1] Natl Inst Mat Sci, Mat Informat Technol Stn, Creep Grp, Tsukuba, Ibaraki, Japan
来源：
MATERIALS AT HIGH TEMPERATURES | 2008年 / 25卷 / 03期
关键词：
creep; allowable stress; ferritic steel; long-term creep strength; Larson - Miller parameter;
D O I：
10.3184/096034008X354864
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A large drop in creep rupture strength in the long-term is a noticeable phenomenon for high Cr ferritic creep resistant steels, since it may result in overestimation of 100,000h creep rupture strength, and allowable stress. A program for assessment of long-term creep strength and review of current allowable stress of high Cr ferritic creep resistant steels has been conducted in Japan. Provisional rules for revised allowable stress and new life prediction method for those materials have been set up at the beginning of 2005. In this paper, the contents of those rules will be presented.
引用
收藏
页码：121 / 129
页数：9
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