摘要
通过连续驱动摩擦焊的方法,分别采用强、弱两种规范对E-35NCD16结构钢环形工件进行对接焊,对焊接接头显微组织进行了观察,并对接头拉伸、弯曲、冲击等力学性能进行了检测。结果表明,两种工艺规范下接头区域没有发现气孔、裂纹等明显缺陷,弱规范的接头热影响区较强规范宽,强规范接头飞边明显大于弱规范接头;强、弱规范接头各区金相组织无明显差别,熔合区及过热区均为中碳马氏体,正火区组织为细小的回火索氏体,不完全正火区为马氏体+回火索氏体的不均匀组织;工艺参数对于接头力学性能影响不大,接头力学性能容易得到稳定的控制。
Through the continuous drive friction welding method, the strong and weak welding specifications were used for E-35NCD 16 steel annular work piece friction welding respectively. The microstructure of the welding joints was observed, and the tensile, bending, impact properties were tested. The results show that, the joint area has no obvious crack or porosity under two kinds of welding specifications. The heat affected zone width of weak welding specification joint is wider than that of the strong welding specification joint, while the flying edge of the strong specification joint is significantly larger than that of the weak specification joint. The welding joint microslructure has no significant difference.The microstructure of fusion zone and overheated zone are medium carbon martensite. The normalized zone is small tempered sorbite, the not completely normalized zone is uneven microstructure with martensite ＋ tempering sorbite. The welding parameters has little effect on the mechanical properties of welded joint, which shows that the stability control of the welding joints mechanical properties can be easily obtained.
出处
《热加工工艺》
CSCD
北大核心
2015年第23期197-199,共3页
Hot Working Technology
基金
河南省教育厅自然科学研究计划项目(2010C460006)
关键词
E-35NCD16结构钢
连续驱动摩擦焊
组织
性能
E-35NCD 16 structural steel
continuous drive friction welding
microstructure
properties
