摘要
利用手工电弧焊在9CrMoV钢和Stellite 21硬质层之间增加ENi Cr Fe-3过渡层,同时制备了不添加ENi Cr Fe-3过渡层的Stellite 21硬质层。结果显示:Stellite 21/ENiCrFe-3和ENi Cr Fe-3/9CrMoV界面都达到良好的冶金结合。ENi Cr Fe-3过渡层阻隔了铁元素从9CrMoV钢向Stellite 21硬质层的扩散,使得Stellite 21硬质层中靠近界面处中的铁元素含量降低。增加ENi Cr Fe-3过渡层避免了Stellite 21/9CrMoV界面处的硬度突变,降低了Stellite 21/9CrMoV界面处的残余应力。
ENiCrFe-3 interlay was added between 9CrMoV steel and Stellite 21 hard layer by using shielded metal arc welding, and the Stellite 21 hard layer on 9CrMoV steel without ENiCrFe-3 interlay was prepared. The results show the interfaces of Stellite 21/ENiCrFe-3 and ENiCrFe-3/9CrMoV achieve good metallurgical bonding. The ENiCrFe-3 interlay blocks the diffusion of iron from 9CrMoV steel to Stellite 21 and reduces the iron content near the interface of Stellite 21 hard layer. With the addition of ENiCrFe-3 interlay, the hardness mutation of the interface of Stellite 21/9CrMoV is avoided and then the residual stress in Stellite 21/9CrMoV interface reduces.
作者
杨光磊
王东
李玉艳
赵海兴
刘霞
何国
YANG Guanglei;WANG Dong;LI Yuyan;ZHAO Haixing;LIU Xia;HE Guo(Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering,Shanghai Jiao Tong University, Shanghai 200240, China;Shanghai Electric Power Generation Equipment Co., Ltd.Turbine Plant, Shanghai 200240, China)
出处
《热加工工艺》
北大核心
2019年第4期131-134,137,共5页
Hot Working Technology
基金
上海电气(技)项目(2015-084)
