| 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14.1 MPa和15.0 MPa,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。 |
| 关键词: 石墨 TZM合金 钎焊温度 钎焊时间 抗剪强度 |
| DOI： |
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| 基金项目:国家科技部科技型中小企业技术创新基金资助项目[2001(01C26215100574)] |
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| Effect of brazing technology on structure and property of brazed joint between graphite and TZM alloys with Ti filler |
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XU Qing-yuan1, LI Ning2, XIONG Guo-gang1, ZHANG Wei2, ZHAO Wei1
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1.Institute of Mechanical Manufacturing Technology, CAEP, Mianyang 621900, Sichuan, China;2.College of Manufacturing Science and Engineering, Sichuang University, Chengdu 610065, China
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| Abstract: |
| 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 30-40μ m and the solid solution layer is about 70-80μ m.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 1600℃ and thus the brazed joint can bear the thermal cycling from room temperature to 1600℃ without failure. |
| Key words: graphite TZM alloys brazing temperature brazing time shear-resistant strength |
