摘要
新一代钢铁材料将是 2 1世纪的主要结构材料 ,脉冲MAG焊是适合它的一种传统熔焊方法。为了促进 40 0MPa新一代钢铁材料的焊接性研究及其工程应用 ,首先根据实测脉冲MAG焊的热循环曲线 ,确定了 40 0MPa级新一代钢铁材料脉冲MAG焊的焊接热循环方程 ,并以此为基础建立了焊接HAZ的奥氏体晶粒长大方程和晶粒长大图。通过晶粒长大图 ,可以预测焊接HAZ各个部位的奥氏体晶粒长大的情况。研究结果表明 ,40
The new generation steel will be the main structural material in 21st century. The MAC pulsed welding,one of the conventional fusion welding ,can suit to the new generation steel. In order to promote the research on its weldability and engineering application, the weld thennal cycle equation is described correctly according to the measured MAC pulsed weld thermal curves. And then the HAZ austenite grain growth equation and diagram of the new generation steel with yield strength 400 MPa are established. The grain growth in all parts of HAZ can be predicted through the diagram,which reflects its heat sensitivity,being one kind of its weldability. The conclusion of investigation is that the prediction data of the grain growth diagram mate well with the experimental data.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2002年第3期29-31,共3页
Transactions of The China Welding Institution
基金
国家 973计划资助项目 ( 19980 6 15 0 0)
