TEMPERATURE RELATED CRACK PROPAGATION IN OFFSHORE PLATFORM STEEL A537

doi:10.7623/syxb199503020

Editorial office of ACTA PETROLEI SINICA ›› 1995, Vol. 16 ›› Issue (3): 129-133.DOI: 10.7623/syxb199503020

• Petroleum Engineering • Previous Articles Next Articles

TEMPERATURE RELATED CRACK PROPAGATION IN OFFSHORE PLATFORM STEEL A537

Fang Huacan¹, Duan Menglan²

1. Petroleum University, Beijing;
2. Cinese Academy of Scicences

Received:1993-07-09 Revised:1994-03-05 Online:1995-07-25 Published:2013-07-06

海洋平台用钢A537与温度相关的疲劳裂纹扩展

方华灿¹, 段梦兰²

1. 石油大学;
2. 中国科学院

作者简介:方华灿,1952年毕业于天津北洋大学现任石油大学(北京)校务委员会副主任,教授.通讯处:北京昌平水库路.邮政编码:102000.

Abstract

Abstract: The crack propagation characteristics of offshore platform steel A5 37,under constantloads,are studied at 238K,273K and 303K,using fracture mechanics.The relationship of fa-tigue crack growth rate with temperatures are determined and described by Yolobori Formu-la.Apivot point on the FCP diagram of steeI A537 is found and analyzed in detail.The frac-ture surfaces are observed under a scanning electron microscope,showing that the fracture ofsteel A537 under all the testing temperatures takes the form of microvoid coalescence,whichcharacterizes ductile fracture.

Key words: steel A537, crack, temperature

摘要： 用断裂力学研究了常幅载荷作用下A537钢在238K、273K和303K三个不同温度下的疲劳裂纹扩展特性.发现裂纹的扩展速率与试验温度密切相关,其相关关系满足Yokobori公式.试验结果集中在裂纹扩展图上曲线的交点,作为疲劳裂纹扩展的一个临界值,该点意义重大,本文对此进行了详细分析.对不同温度下疲劳裂纹的断口作了宏观和微观分析,发现宏观断口表面与温度密切相关,而微观形貌表现出相同的微空洞聚结的叠波断裂;说明三个温度下均为延性断裂.

关键词: A537钢, 裂纹, 温度

Fang Huacan, Duan Menglan. TEMPERATURE RELATED CRACK PROPAGATION IN OFFSHORE PLATFORM STEEL A537[J]. Editorial office of ACTA PETROLEI SINICA, 1995, 16(3): 129-133.

方华灿, 段梦兰. 海洋平台用钢A537与温度相关的疲劳裂纹扩展[J]. 石油学报, 1995, 16(3): 129-133.

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TEMPERATURE RELATED CRACK PROPAGATION IN OFFSHORE PLATFORM STEEL A537

海洋平台用钢A537与温度相关的疲劳裂纹扩展

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