Development of steel plate for large-heat input welding by nanometer precipitates

被引：0

作者：

YANG JianZHU KaiWANG RuizhiZHANG Yi BAI YanWANG Guodong and SHEN Jianguo Research InstituteBaoshan Iron Steel CoLtdShanghai China ^{[201900
]}

机构：

来源：

Baosteel Technical Research | 2010年 / 4(S1)卷 / S1期

关键词：

large-heat input welding; heat affected zone; toughness; oxide metallurgy; nanometer precipitate;

D O I：

暂无

中图分类号：

TG457.11 [钢];

学科分类号：

080201 ; 080503 ;

摘要：

<正>The mechanism of the improvement of heat affected zone(HAZ) toughness with nanometer precipitates is discussed in this paper.The austenite grain growth during welding process can be effectively prevented with the aid of the pinning effect of fine particles,so that the steel plate can be improved in large-heat input welding performance.The oxide metallurgy technology with strong deoxidizers is developed in Baosteel.Large number of nanometer precipitates are formed during deoxidation,solidification and phase transformation processes.With the pinning effect of these fine particles,after welding with large-heat input of 400 kJ/cm,the average austenite grain size is 61μm in HAZ,the average energy absorbed value is 142 J for V-notch Charpy test at - 20℃.

引用

页码：22 / 22

页数：1