火箭推进2018，Vol.44Issue(1)：67-74,8.
钛合金夹层结构扩散钎焊工艺研究
Study on diffusion brazing process for titanium alloy sandwich structure
赵鼎 1刘琳 2孙龙飞2
作者信息
- 1. 西北工业大学 航天学院,陕西 西安710072
- 2. 西安航天发动机有限公司,陕西 西安710100
- 折叠
摘要
Abstract
The Cu interlayer concentration distribution law near TC4 titanium alloy diffusion brazing interface was simulated by using dynamic software Dictra.The influence trend of the interlayer thickness, bonding temperature and temperature holding time on the diffusion distance of interlayer was obtained, which provided a theoretical basis for the design of process parameters.The correctness of the diffusion analog computation was verified in combination with welding experiment of sandwich structure parts.The results show that the bonding temperature has the greatest influence on the joint strength of titanium alloy sandwich structure diffusion brazing,and then the holding time follows but the interlayer thickness has no influence on the joint strength.For the titanium sandwich structure, the microstructure analysis result of welded joints reveals that the appropriate process of the diffusion brazing should be bonding temperature of 940 ℃,holding time of 50 min and the interlayer thickness of 20μm,which meets the requirements of product.关键词
钛合金TC4/夹层结构/数值模拟/扩散钎焊Key words
TC4 titanium alloy/sandwich structure/numeral simulation/diffusion brazing分类
航空航天引用本文复制引用
赵鼎,刘琳,孙龙飞..钛合金夹层结构扩散钎焊工艺研究[J].火箭推进,2018,44(1):67-74,8.
