超低磷奥氏体不锈钢带极电渣堆焊层晶间相析出机理  

MECHANISM OF GRAIN BOUNDARY PHASE EDUCTION IN WELD METAL OF STRIP ELECTRODE ELECTROSLAG SURFACING PROCESS FOR ULTRA - LOW - CARBON AUSTENITIC STAINLESS STEEL

作　　者：王家淳[1] 陈勇 

机构地区：[1]北京有色金属研究总院,100088 [2]哈尔滨中药二厂,150001

出　　处：《焊接》1999年第12期18-21,共4页Welding & Joining

摘　　要：针对超低碳奥低体不锈钢堆焊材料,采用带极电渣堆焊工艺,应用600 MW核容器标准热处理规范——615℃×29h深入研究了堆焊层晶间相析出的机理研究结果表明经615℃×29h热处理后,堆焊层晶间析出了少量的M_(23)C_6碳化物和Y′相未发现σ相、相和X相等金属间脆性化合物.少量M_(23)C_6碳化物的析出,不致于严重影响堆焊层的性能.For the ultra - low - carbon austenitic stainless steel, using the process of strip electrode electroslag surfacing and the standardized heat treatment process of 600 MW nuclear vessels (615℃×29 h) , the mechanism of grain boundary phase eduction in weld metal is analysed deeply. The research results indicate that there is a little M23 C6 carbonide does not seriously influence the properties of weld metal.

关 键 词：带极电渣堆焊 铁索体 碳化物 Σ相 不锈钢 堆焊 

分 类 号：TG457.11[金属学及工艺—焊接] TG455