钨/低活化钢连接用Fe基非晶钎料  

Fe-based amorphous brazing filler metal for joining tungsten/reduced activation steels

作　　者：刘天鸷 王英敏 魏明玉 羌建兵 Hussler Peter 王建豹 练友运 刘翔 LIU Tian-zhi;WANG Ying-min;WEI Ming-yu;QIANG Jian-bing;Haussler Peter;WANG Jian-bao;LIAN You-yun;LIU Xiang(Key Laboratory of Materials Modification, Ministate of Education, Dalian University of Technology, Dalian 116024, China;Fusion Laboratory, Southwestern Institute of Physics, Chengdu 610041, China)

机构地区：[1]大连理工大学三束材料改性教育部重点实验室 [2]核工业西南物理研究院聚变所

出　　处：《材料热处理学报》2018年第6期148-155,共8页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51671045);中央高校基础研究基金(DUT16ZD209,DUT18GF112);国家磁约束核聚变能发展研究专项基金(2013GB107003,2015GB105003);核能开发项目(H660003-13-02)

摘　　要：采用单辊急冷技术制备Fe（60）Mn（15）B（16.67）Si（6.33）Sn2非晶箔带,将其作为钎料对DEMO聚变示范堆偏滤器用钨与低活化钢进行了钎焊连接。结果表明：1220℃温度下保温15 min所获得的钎焊接头界面结合良好,无孔洞、裂纹等宏观缺陷,其焊缝组织由单相Fe基固溶体、混合相层（固溶体基体上分布着（Fe,Cr）3B与FeW2B2相）和FeW2B2基化合物层3部分构成;基于合金组元的扩散与交互作用,揭示了钎焊接头组织特征与相关形成机制。Fe（60）Mn（15）B（16.67）Si（6.33）Sn2 amorphous brazing filler metal was prepared by single roll melt-spinning technique and used as brazing filler metal to braze tungsten to CLF-1 type reduced activation steels for the divertor of developing demonstration fusion reactor（ DEMO）.The results show that the interface of the brazed joints obtained by brazing at 1220 ℃ for 15 min has good bonding,no holes,cracks and other macroscopic defects,and the microstructure of the weld seam is composed of single phase Fe based solid solution,mixed phase layer（the（Fe,Cr）3B and FeW2B2 intermetallic phases are distributed on the solid solution matrix） and FeW2B2 base compound layer. Based on the diffusion and interaction of alloy components,the microstructure characteristics and correlation formation mechanism of the brazed joints are revealed.

关 键 词：偏滤器 Fe基非晶钎料 W/CLF-1钢接头 钎缝组织 

分 类 号：TG454[金属学及工艺—焊接]