摘要
建立了热轧钢板焊接热影响区 (HAZ)的连续冷却转变曲线 (焊接CCT曲线 ) ,以研究船用热轧钢板的焊接性能。根据所建立的焊接CCT曲线 ,选择了合理的焊接工艺对 10mm厚的船用热轧钢板进行了手工电弧焊 ,并对焊后的焊接接头进行了宏观检验和X射线探伤、力学性能试验及冲击试验。借助金相显微镜和扫描电镜分析了CCT图中不同冷速条件下的显微组织和焊接接头的显微组织以及冲击断口形貌。试验结果表明 :根据建立的焊接CCT曲线 ,所选择的手工电弧焊的焊接工艺是合理的 ,焊缝质量良好 ;
Continuous cooling transformation diagrams (Welding CCT diagrams) of hot-affect zone in hot rolled steel plate were developed to investigate the welding properties of hot rolled shipbuilding plate.According to them,the reasonable welding technique was selected to weld hot-rolled shipbuilding plate (10mm thick) through manual arc welding and welding joints after the welding process were measured by visual examination,X-ray inspection,mechanical property and impact tests.Microstructure at different cooling rates on CCT diagram,microstructures in welded joints and impact fracture morphologies were analyzed by means of metalloscope and scanning electron microscope.As a result,it is indicated that the manual arc welding technique is reasonable since good quality of welding seam and excellent complex properties in welded joint.
出处
《钢铁钒钛》
CAS
北大核心
2001年第2期25-32,共8页
Iron Steel Vanadium Titanium
