Change in Inclusions after Mg Deoxidation Process

摘要：

　　In the present paper,effect of Mg deoxidation on formation of inclusions in steel plate for shipbuilding is studied.After Mg deoxidation,the compositions of inclusion can be changed,with higher MgO content at its center,and higher MnS and CaS content on its surface.For the precipitates with the diameter smaller than 100nm,their number in the steel plate after Mg deoxidation is very large.During the welding process with the high heat input for the steel plate,these kinds of inclusions effectively inhibit the growth of austenite grain and enhance the formation of intragranular ferrite in the heat affected zone.The toughness of the heat affected zone has been greatly improved.

关键词： Mg deoxidation inclusions precipitates oxide metallurgy

作者: Yang Jian Zhu Kai Wang Ruizhi Ma Zhigang Wang Junkai

作者单位: Department of Metallurgical Process, Central Research Institute, Baosteel Group Corporation Steelmaking Plant, Baoshan Iron & Steel Co., Ltd.

会议类型: 国际会议

会议名称: The 4th Australia-China-Japan Joint Symposium on Iron and Steelmaking(第四届中日澳钢铁冶金学术会议)

会议地点: 沈阳

会议语种:英文

页码: 225-231

在线出版日期: 2012-11-03（万方平台首次上网日期，不代表论文的发表时间）