Ti_3Al对TiCu15Ni15钎料组织的影响  

Effect of Ti_3Al on Microstructure of TiCu15Ni15 Filler Metal

作　　者：潘晖[1] 毛唯[1] 王英华[2] 

机构地区：[1]北京航空材料研究院焊接与锻压研究室,北京100095 [2]清华大学材料系,北京100084

出　　处：《稀有金属》2004年第1期86-88,共3页Chinese Journal of Rare Metals

摘　　要：分别以 0 %,2 5 %,5 0 %,75 %,10 0 %比例的Ti3Al替换TiCu15Ni15中Ti,对所得的钎料进行组织形貌及成分分析。研究结果表明 :钎料合金由先结晶低Cu ,Ni含量相和后结晶的高Cu ,Ni含量相组成 ,随Ti3Al增加。低Cu ,Ni含量相减少 ,高Cu ,Ni含量相增加 ,同时由于Nb含量增加 ,背散射图像发生变化 ,先结晶相由灰色逐渐变为亮白色 ,后结晶相成分偏析增加 ,先结晶高Nb相为灰色 ,后结晶低Nb相为黑色 ,至 5 #合金形态发生显著变化 ,灰色相由块团状变为短条或片状 ,其中央为白色边缘为灰色 ,这将引起性能变化。The image of microstructure and chemical composition of phase of TiCu15Ni15 filler materials with 0%, 25%, 50%, 75%, 100% Ti 3Al instead of titanium were analyzed. It can be concluded that filler metal consists of low Cu and Ni phase and high Cu and Ni phases. Low Cu, Ni phases decrease and high Cu, Ni phases increase with Ti 3Al increases. At the same time, BSE image changs because Nb increases. The early crystal phase becomes to bright from gray, and chemical composition segregation of latter crystal phase increases. Early crystal high Nb phase is gray, latter crystal low Nb phase is black, and the image of No.5 alloy is changed significantly because the gray phase becomes to lath like from nodule like. The centroal region is white and the periphery is grany. Therefore, the properties are changed.

关 键 词：钎料 TI3AL TiCu15Ni15钎料 

分 类 号：TG46.23[金属学及工艺—焊接]