焊管2016，Vol.39Issue(8)：11-15,5.DOI:10.19291/j.cnki.1001-3938.2016.08.003
管线钢平面应变断裂韧性经验模型研究
Study on Empirical Model of Plane Strain Fracture Toughness for Pipeline Steel
张华 1张宏 2王亚龙 1赵新伟 3李娜3
作者信息
- 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
- 3. 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
- 折叠
摘要
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.关键词
管线钢/断裂韧性/平面应变/厚度效应Key words
pipeline steel/fracture toughness/plane strain/thickness effect分类
矿业与冶金引用本文复制引用
张华,张宏,王亚龙,赵新伟,李娜..管线钢平面应变断裂韧性经验模型研究[J].焊管,2016,39(8):11-15,5.
