焊管Issue(3)：11-15,5.
X80管线钢断裂韧性测试方法探讨
Discussion on Test Method of X80 Pipeline Steel Fracture Toughness
赵天娆 1张华 2李丽锋 2罗金恒 2赵新伟2
作者信息
- 1. 西安石油大学 材料科学与工程学院，西安 710065
- 2. 中国石油集团石油管工程技术研究院，西安 710077
- 折叠
摘要
Abstract
Adopting the blunting line method specified in GB/T 21143—2007 Specification to test the ductile fracture toughness JIC of X80 pipeline steel, and compared with macro fracture crack Ji determined by the micro fracture crack extension zone methods. The results showed that the left border line stipulated in GB/T 21143—2007 misjudged the data, the JIC value of X80 pipeline steel determined by the blunting line method is much higher. It is suggested keep the blunting line form in GB/T 21143—2007 during the ductile fracture toughness test, adjust the left border line offset from 0.1 mm to 0.03 mm, and adjust the blunting line offset 0.2 mm to 0.035 mm.关键词
管线钢/断裂韧性/阻力曲线/伸张区宽度/钝化线Key words
pipeline steel/fracture toughness/resistance curve/stretching zone width/blunting line分类
矿业与冶金引用本文复制引用
赵天娆,张华,李丽锋,罗金恒,赵新伟..X80管线钢断裂韧性测试方法探讨[J].焊管,2015,(3):11-15,5.
