Creep property evaluation of heat-resistant steels by small punch creep test

被引：1

作者：

Komazaki, S. ^{[1
]}

Nakata, T. ^{[1
]}

Sugimoto, T. ^{[2
]}

Kohno, Y. ^{[1
]}

机构：

[1] Muroran Inst Technol, Muroran, Hokkaido 0508585, Japan

[2] Nikko Inspect Serv Co Ltd, Muroran, Hokkaido 0518505, Japan

来源：

THERMEC 2006, PTS 1-5 | 2007年 / 539-543卷

关键词：

small punch creep test; small specimen test technique; creep properties; material deterioration; life prediction; heat-resistant steel; fossil power plant; fusion reactor;

D O I：

10.4028/www.scientific.net/MSF.539-543.4434

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The recently developed small punch (SP) creep test was applied to four different heat-resistant ferritic steels, namely, two kinds of conventional ferritic steels which had been actually used in the high-temperature components for long periods and two advanced high chromium ferritic steels for fusion reactor materials to investigate the applicability of the SP creep test. The ratio of the load of SP creep test to the stress of standard uniaxial creep test was calculated so that both the creep rupture curves (load/stress versus Larson-Miller parameter curves) were overlapped to convert the results of SP creep test into those of standard test. As a result, the ratio was determined to be 2.4, irrespective of the kind of ferritic steel. This result indicates that the creep rupture strength of heat-resistance ferritic steels can be estimated using a miniaturized plate-type specimen and this conversion coefficient 2.4 independent of the kind of ferritic steel.

引用

页码：4434 / +

页数：2

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