[1]张 华,等.管线钢平面应变断裂韧性经验模型研究[J].焊管,2016,39(8):11-15.
 ZHANG Hua,ZHANG Hong,et al.Study on Empirical Model of Plane Strain Fracture Toughness for Pipeline Steel[J].,2016,39(8):11-15.
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管线钢平面应变断裂韧性经验模型研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
39
期数:
2016年第8期
页码:
11-15
栏目:
试验与研究
出版日期:
2016-08-28

文章信息/Info

Title:
Study on Empirical Model of Plane Strain Fracture Toughness for Pipeline Steel
作者:
张 华1 2张 宏1王亚龙2赵新伟2李 娜2
1. 中国石油大学(北京), 北京 102249;
2. 中国石油集团石油管工程技术研究院石油管材及装备材料服役行为与结构安全国家重点实验室, 西安 710077
Author(s):
ZHANG Hua1 2 ZHANG Hong1 WANG Yalong2 ZHAO Xinwei2 LI Na2
1. China University of Petroleum(Beijing), Beijing 102249, China;
2. CNPC Tubular Goods Research Institute, State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, Xi’an 710077, China
关键词:
管线钢断裂韧性平面应变厚度效应
Keywords:
pipeline steel fracture toughness plane strain thickness effect
文献标志码:
A
摘要:
为了研究高钢级管线钢断裂韧性受试样厚度影响的变化规律,对X80管线钢不同厚度的试样进行了系列断裂韧性试验,建立了X80管线钢平面应变断裂韧性和临界壁厚关系的经验估算模型。基于试验结果以及三维断裂力学理论和准则,对所建立的经验模型进行了验证。结果表明,对于X80管材,平面应变的临界壁厚大约在50 mm,与厚壁弯管的爆破试验结果基本吻合;经验估算模型的预测结果较为准确,能够满足工程应用的需要。
Abstract:
The high grade pipeline steel fracture toughness is affected by specimen thickness, in order to study the influence change rule, a series of fracture toughness tests were carried out for different thickness X80 pipeline steel specimen. The empirical estimation model between X80 pipeline steel plane strain fracture toughness and critical wall thickness was established. Based on test results and three-dimensional fracture mechanics theory and criterion, the empirical model was validated. The result showed that, for X80 pipe material, the critical wall thickness of plane strain is about 50 mm, it is basic consistent with the blasting test results of thick wall bends; the predicating results of experience estimation model are more accurate, can meet the requirements of engineering application.

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备注/Memo

备注/Memo:
收稿日期: 2016-04-19
作者简介: 张   华,男,高级工程师,主要从事油气输送管道的完整性管理技术研究及管材质量检验工作。
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