High Strength Steel Plates for Large Container Ships

被引：6

作者：

Chang-Sun Lee ^{[1
]}

Sangho Kim ^{[1
]}

In-Shik Suh ^{[1
]}

Kyung-Keun Um ^{[1
]}

Ohjoon Kwon ^{[2
]}

机构：

[1] Technical Research Labs,POSCO,Goedong-dong,Nam-gu,Pohang,790-785,Republic of Korea

[2] Research Institute of Industrial Science and Technology,Hyoja-dong,Nam-gu,Pohang,790-600,Republic of Korea

来源：

Journal of Iron and Steel Research(International) | 2011年 / 18卷 / S1期

关键词：

EH36; EH40; EH47; container ship; high heat input welding; weldability;

D O I：

10.13228/j.boyuan.issn1006-706x.2011.s1.014

中图分类号：

U668.2 [金属材料];

学科分类号：

080502 ;

摘要：

Heavy thickness steel plates with a good combination of strength,toughness and weldability have been demanded for building of large container ships.High strength steel plates with heavy gauge of EH36,EH40 and EH47 grades were developed by optimizing chemical compositions and TMCP process parameters.Micro alloying elements of Ti and Nb were added to the three steel grades for enhancing the strength and toughness of base plates.The strength of base plates of the EH47 grade was further enhanced with the help of the increased amount of substitutional solid solutes,such as manganese,copper,nickel,or chromium.EH36 steel plates for high heat input over 550 kJ/cm were manufactured by improving thermal stability of TiN particles for better weld heat-affected zone toughness.Thermally stabilized TiN particles effectively suppress grain growth at weld heat-affected zone,leading to better toughness.These steel plates showed excellent mechanical properties of base plates and welded joints.

引用

页码：796 / 802

页数：7