作　　者： ; ; ; ; ;

机构地区： 中国工程物理研究院

出　　处： 《焊接学报》 2006年第7期37-40,共4页

摘　　要： 研究了钛合金真空钎焊石墨与TZM合金过程中，钎焊温度和时间对钎焊接头组织和性能的影响。结果表明，接头组织由Ti—TiC反应层和Ti—Mo固溶体层组成。在一定范围内，随温度和时间增加，钎缝层加厚。钎焊工艺参数优化后获得厚度为30-40μm的界面反应层，70～80μm的固溶体层，接头组织均匀，界面平整。抗剪强度达到14．1MPa和15．0MPa，再熔化温度高于1600℃的使用温度，能承受从室温到1600℃剧烈的热循环作用。 The effects of brazing temperature and time on the structure and property of the brazed joint between graphite and TZM alloys with Ti-based filler in vacuum were presented.The results show that the brazed joint is made up of two layers: reaction layer of Ti-TiC and solid solution layer of Ti-Mo.In some extent,the thickness of the brazing seam increases with the increasing of brazing temperature and time.After the brazing parameter being optimized,the thickness of the reaction layer is about 30-40 μm and the solid solution layer is about 70-80 μm.The structure of the brazed joint is uniform and the interface of graphite and TZM alloys is smooth.The shear-resistant strength of the brazed joint reaches 14.1-15.0 MPa.The remelting temperature is up to 1 600 ℃ and thus the brazed joint can bear the thermal cycling from room temperature to 1 600 ℃ without failure.

关 键 词： 石墨 合金 钎焊温度 钎焊时间 抗剪强度

领　　域： [金属学及工艺]