Research and Development of X70 with an Acicular Ferrite Microstructure for West-East Pipeline Project

被引：1

作者：

Zheng Lei Gao Shan Technical Centre of Baoshan Iron Steel Co Ltd Shanghai ^{[201900
]}

机构：

来源：

EngineeringSciences | 2004年 / 04期

关键词：

X70; pipeline steel; acicular ferrite; high toughness;

D O I：

暂无

中图分类号：

TG115 [金属的分析试验（金属材料试验）];

学科分类号：

080502 ;

摘要：

It is introduced in this paper that a high strength and high toughness X70 pipeline steel with an ultra low acicular ferrite microstructure has been researched and developed at Baosteel according to the requirements of the West East Gas Pipeline(WEGTP) project. The developed steel has higher strength, higher toughness, lower ductile brittle transition temperature and higher dynamic tear resistance than the conventional X70 with ferrite and pearlite microstructure. The excellent properties of the steel are benefited from ultra-low carbon acicular ferrite consisting of interaction of very fine precipitated particles and high-density dislocation. And the steel has been applied on the WEGTP in China.

引用

页码：36 / 39

页数：4