The exhaustion of creep ductility in 1CrMoV steel

被引：12
|
作者：
Binda, L. [1 ]
Holdsworth, S. R. [1 ]
Mazza, E. [1 ,2 ]
机构：
[1] EMPA Swiss Fed Labs Mat Testing & Res, CH-8600 Dubendorf, Switzerland
[2] ETHZ Swiss Fed Inst Technol, CH-8092 Zurich, Switzerland
来源：
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2010年 / 87卷 / 06期
关键词：
Creep ductility exhaustion model 1CrMoV; RUPTURE PROPERTIES; NUCLEATION; STRESS; IMPURITIES; CAVITATION; GROWTH; STRAIN; IRON;
D O I：
10.1016/j.ijpvp.2010.03.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The calculation of creep damage due to secondary (self equilibrating) stresses for the lifetime assessment of critical locations in components subject to creep-fatigue loading at high temperatures may be determined in terms of ductility exhaustion. A new Spindler type stress-modified creep ductility exhaustion model has been developed for 1CrMoV steel in which the rupture ductility is dependent not only on creep strain rate, stress and temperature, but also on a material pedigree function. The paper covers the background to the development of the new model and demonstrates its capability for predicting the creep rupture ductility characteristics of heats of 1CrMoV at different positions in the alloy scatterband. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：319 / 325
页数：7
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