Fracture toughness of thick steel plates for shipbuilding

被引：0

作者：

Park, J. S. ^{[1
]}

Jung, B. Y. ^{[1
]}

Yajima, H. ^{[2
]}

Lee, J. B. ^{[1
]}

机构：

[1] POSCO Tech Res Lab, Pohang 790785, South Korea

[2] Nagasaki Inst Appl Sci, Nagasaki 851019, Japan

来源：

ADVANCED WELDING AND MICRO JOINING / PACKAGING FOR THE 21ST CENTURY | 2008年 / 580-582卷

关键词：

shipbuilding; plate thickness; brittle fracture; crack initiation; crack arrest; fracture toughness; wide plate tensile test; ESSO test;

D O I：

10.4028/www.scientific.net/MSF.580-582.89

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the effect of thickness on the fracture toughness of the steel plate with the thickness of 80mm has been investigated by the wide plate tensile test and ESSO test. The fracture toughness for crack initiation and propagation was evaluated quantitatively for the full thickness specimen. It was found that EH-36 grade steel with the thickness of 80mmt showed the K-IC value of 164kgf/mm(1.5) at -145 degrees C. Also, large-scale ESSO test result showed that the steel with the thickness of 80mm had 520kgf/mm(1.5) at -10 degrees C. Although it was known that the fracture toughness decreases with the increase of the plate thickness, EH-36 grade steel with the thickness of 80mm had enough values of fracture toughness to prevent the crack initiation and arrest the brittle crack propagation.

引用

页码：89 / +

页数：2