Extrapolation of creep life data for 1Cr-0.5Mo steel

被引：47
作者：
Wilshire, B. [1 ]
Scharning, P. J. [1 ]
机构：
[1] Swansea Univ, Sch Engn, Mat Res Ctr, Swansea SA2 8PP, W Glam, Wales
来源：
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2008年 / 85卷 / 10期
关键词：
Creep; Creep fracture; Creep life prediction; Ferritic steel;
D O I：
10.1016/j.ijpvp.2008.04.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new approach to analysis of stress rupture data allows rationalization, extrapolation and interpretation of multi-batch creep life measurements reported for ferritic 1Cr-0.5Mo tube steel. Specifically, after normalizing the applied stress through the appropriate UTS value, the property sets at various creep temperatures are superimposed onto a sigmoidal 'master curve' using the activation energy for lattice diffusion in the alloy steel matrix (300 kJ mol(-1)). Despite the considerable batch-to-batch scatter, results from tests lasting less than 30,000 h then allow straightforward prediction of creep lives for stress-temperature conditions causing failure in times up to 150,000 h. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：739 / 743
页数：5
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