A new methodology for long term creep data generation for power plant components

被引：0
|
作者：
Wilshire, B. [1 ]
Scharning, P. J. [1 ]
Hurst, R. [2 ]
机构：
[1] Univ Coll Swansea, Sch Engn, Mat Res Ctr, Swansea SA2 8PP, W Glam, Wales
[2] European Commiss, Joint Res Ctr, Inst Energy, Petten, Netherlands
来源：
BALTICA VII: LIFE MANAGEMENT AND MAINTENANCE FOR POWER PLANTS, VOL 1 | 2007年 / 246卷
关键词：
creep life prediction; creep ductility rationalization; grade; 91; steel;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Using stress rupture results openly available for Grade 91 steel, three features of a new methodology for creep data analysis are summarized. Firstly, in contrast to traditional power law and parametric methods, 100 000 h creep strengths of power plant steels are predicted accurately by extended extrapolation of creep lives from tests lasting a maximum of 5000 h. Secondly, related approaches rationalize creep ductility measurements in a manner which provides information relevant to creep damage evolution in operational plant. Finally, reference is made to a set of new relationships developed to offer a physically-meaningful foundation not only for rationalization and extrapolation but also for interpretation of the creep and creep fracture properties of metals and alloys.
引用
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页码：196 / +
页数：3
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