TECHNICAL BASIS OF FATIGUE CRACK GROWTH THRESHOLD FOR STAINLESS STEEL IN AIR ENVIRONMENT FOR ASME CODE SECTION XI

被引：0
|
作者：
Hasegawa, Kunio [1 ]
Usami, Saburo [2 ]
机构：
[1] Tech Univ Ostrava, Ctr Adv Innovat Technol, 17 Listopadu 15-2172, Ostrava 70833, Czech Republic
[2] Hitachi Ltd, Hitachi, Ibaraki 3191292, Japan
来源：
PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2017, VOL 1A | 2017年
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fatigue crack growth threshold is an important characteristic of crack growth assessment for the integrity of structural components. However, threshold values for austenitic stainless steels in air environment are not well provided in many fitness-for-service (FFS) codes, although extensive amount of fatigue crack growth tests data has been published. This paper focuses on fatigue crack growth threshold values for austenitic stainless steel in air environment at room and high temperatures. The paper introduces the current fatigue crack growth rates provided by the ASME (American Society of Mechanical Engineers) Code Section XI and summarizes the available test data of fatigue crack growth thresholds based on the literature survey. The paper then discusses the applicability of the existing fatigue crack growth thresholds for stainless steels and proposes a new relation as a function of the stress ratio for use by the ASME Code Section XI.
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页数：8
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