双相不锈钢焊接性能及接头耐腐蚀性能的研究现状

Research Status on Weldability of Duplex Stainless Steeland Corrosion Resistance of Joint

摘要: 双相不锈钢因具有良好的力学性能和耐腐蚀性能而得到广泛的应用，其焊接性能也成为重要研究对象。介绍了双相不锈钢的焊接方法及焊接接头的显微组织，重点讨论了焊接接头的点蚀、应力腐蚀、晶间腐蚀以及脆化和裂纹产生的机理，最后对双相不锈钢焊接性能的研究方向进行了展望。

Abstract: Dual-phase stainless steel has been widely used because of its good mechanical properties and corrosion resistance, and its weldability has also become an important research object. The welding method and microstructure of the welded joint of duplex stainless steel are introduced, and pitting corrosion, stress corrosion, intergranular corrosion and the generation mechanism of embrittlement and cracks of the welded joint are discussed. Finally, the research direction of duplex stainless steel weldability is prospected.