低碳铁素体不锈钢高频直缝电阻焊管退火工艺优化
邵毅,李彦默,刘晨曦(),严泽生,刘永长
Annealing Process Optimization of High Frequency Longitudinal Resistance Welded Low-CarbonFerritic Stainless Steel Pipe
SHAO Yi ,LI Yanmo ,LIU Chenxi (),YAN Zesheng ,LIU Yongchang

图4. 焊接接头各区域微观组织的OM像

Fig.4. OM images of microstructure of welded joint(a) weld zone (b) HAZ 1 (c) HAZ 2 (d) base metal