316L中厚不锈钢板MAG焊接头组织及性能研究
Study on structure and properties of 316L medium thick stainless steel MAG welded joint
吴庆富 1佘宗宇 1吴庆宁 1林田辉 1龙建杰1
作者信息
- 1. 河南卫华重型机械股份有限公司,河南 长垣 453400
- 折叠
摘要
文中采用ER316L实心焊丝对20 mm厚316L不锈钢板进行熔化极活性气体保护焊(MAG),采用小电流多层多道焊制备了316L不锈钢板焊接接头,研究结果表明:奥氏体+10％铁素体构成了焊缝的稳态组织,热影响区为单相奥氏体,且奥氏体晶粒无明显的粗大现象;316L不锈钢焊接接头具有较高的强度和良好的韧性,接头强度高于母材316L钢的强度,接头弯曲位置无气孔和开裂现象.
Abstract
This article used ER316L solid wire to perform Melt Active Gas arc welding(MAG)on 20 mm thick 316L stainless steel,and prepared 316L stainless steel welded joint through low current multi-layer and multi-pass welding.The research results showd that austenite+10％ferrite constitute the steady-state structure of the weld,heat-affected zone was single-phase austenite,and there was no obvious coarse austenite grain.The 316L stainless steel welded joint had good strength and toughness,and the joint strength was higher than that of the 316L base metal.The bending position of the joint was free of pores and cracks.
关键词
316L不锈钢/MAG焊/力学性能/组织Key words
316L stainless steel/MAG welding/mechanical property/microstructure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据