Excellent Heat Affected Zone Toughness Technology Improved by Use of Strong Deoxidizers

摘要：

Excellent Heat Affected Zone Toughness Technology Improved by use of Strong Deoxidizers (ETISD Technology) has been developed by Baosteel. When deoxidation of molten steel is conducted at the precisely controlled oxygen concentrations, the formation of the micro-meter inclusions and the nanometer precipitates in the steel plate can be effectively controlled. During the welding process with high-heat input, the formation of acicular ferrite can be selectively promoted with the aid of micro-meter inclusions; the growth of y grain can also be selectively restrained by the pinning effect of nano-meter precipitates. After welding with highheat input of 400 kJ/cm, excellent heat affected zone toughness can be obtained for the steel plates with both of the above microstructures, and the average absorbed energy is greater than 200 J for V notch Charpy impact test at -20℃.

关键词： high-heat input welding heat affected zone toughness oxide metallurgy inclusions

作者: YANG Jian ZHU Kai WANG Rui-zhi SHEN Jian-guo

作者单位: Metallurgical Process Department, Research Institute, Baoshan Iron and Steel Co Ltd, Shanghai 201900, China

会议类型: 国际会议

会议名称: The 2nd International Symposium on Clean Steel(第二届洁净钢生产技术学术研讨会)

会议地点: 沈阳

会议语种:英文

页码: 141-147

在线出版日期: 2011-08-23（万方平台首次上网日期，不代表论文的发表时间）