焊管2009，Vol.32Issue(7)：33-37,5.
高钢级管线钢断裂韧性确定方法研究
Research on the Determination Method of Fracture Toughness for High Strength Pipeline Steel
摘要
Abstract
Fracture toughness of pipeline steel pipe is an important parameter to evaluate pipeline fracture,and inspecting fracture toughness data is verbose.According to empirical equation between the Charpy impact energy and fracture toughness to estimate is common method.Using mathematical statistics method,a new empirical equation between the fracture toughness and Charpy impact energy of X80 high grade pipeline steel was developed on the basis of experiment sample data.And the theory of statistical test was used to inspect empirical equation.The inspection result indicated that the new empirical equation has high correlation with the sample data.Comparing the empirical equation with that of existing,the empirical equation developed here was more suitable for the X80 high grade pipeline steel,and can make better estimation for its fracture toughness.关键词
高钢级管线钢/断裂韧性/夏比冲击功Key words
high grade pipeline steel/fracture toughness/Charpy impact energy分类
矿业与冶金引用本文复制引用
骆建武,覃海涛..高钢级管线钢断裂韧性确定方法研究[J].焊管,2009,32(7):33-37,5.基金项目
中国石油天然气集团公司2007年应用基础研究计划项目(07A40401) （07A40401）
