Improvement of Heat Affected Zone Toughness of Steel Plate for Large Heat Input Welding with Fine Inclusions at Baosteel

摘要：

　　The technology for improving the heat affected zone toughness of steel plate for large heat input welding with fine inclusions was developed at Baosteel.After deoxidation with strong deoxidizers of Mg alloy,the complex inclusions containing parts of compounds of MgO,Ti2O3,MnO,Al2O3,MnS,CaS and TiN are formed.This kind of inclusions is beneficial for promoting the formation of intragranular ferrite.After two-electrode vibratory electrogas arc welding with the V-type groove and the large heat input of 395kJ/cm in a single pass,excellent heat affected zone toughness is obtained for the developed steel plates with the thickness up to 68mm.

关键词： high heat input welding heat affected zone toughness inclusions fine particles

作者: Jian YANG Zhigang MA Kai ZHU Ruizhi WANG Guodong XU Junkai WANG

作者单位: Steelmaking Research Department,Research Institute,Baosteel Group Corporation,Shanghai 201900,China Steelmaking Plant,Baoshan Iron & Steel Corporation Limited,Shanghai 201900,China

会议类型: 国际会议

会议名称: the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)

会议地点: 北京

会议语种:英文

页码: 723-726

在线出版日期: 2015-05-12（万方平台首次上网日期，不代表论文的发表时间）