254SMO和Q235B焊接接头的物相组成与微观组织

Phase Componet and Microstructure of Welded Joint of 254SMO and Q235B

采用氩弧焊对254SMO钢和Q235B钢进行焊接,利用X射线衍射仪、能谱仪和金相显微镜分析焊接接头的物相组成、化学成分和微观组织。结果表明,焊接接头的主要物相有奥氏体、金属间化合物、碳化物和Ni S。Q235B一侧夹杂有较多的氧化物,而254SMO一侧是大小较为均匀的奥氏体晶粒。

The phase composition, chemical component and microstructure of welded joint between 254SMO and Q235B were studied by XRD, EDS and microscopic analysis. The results show that the main phase in the welded joint are austenite, intermetallic compound, carbide and NiS. And more oxide can be found in Q235B, while there are austenite grains in 254SMO.