摘要
根据高温扩散与空洞闭合蠕变理论,对Ti-6Al-4V钛合金在超塑性状态下扩散连接进行理论分析,建立了数学模型,可作为预测工艺参数,诸如温度、压力、时间等对连接质量的影响和选择合适工艺参数的依据。理论分析与试验结果是吻合的。
Based on current theories of diffusion and creep cavity Closure at hign temperatures, a theoretical analysis of diffusion bonding under superplastic condition for Ti-6 A1--1 V titanium alloy is carried oul. The diffusion bonding is mainly described us a two -stage process:1 The shrinkage process of cavities with shape change from elliptical to cylindrical:2 In the second stage, the radii of the cylindrical cavities are reduced and eliminated.In this paper, the mathematical model is established in order to predict the bonding quality which are affected by technological parameters, such as temperature, pressure, bonding time etc. Meanwhile the reasonable technological parameters are chosen from theoretical analysis. The theoretical analysis is in good agreement with experimental results.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1992年第5期A288-A295,共8页
Acta Aeronautica et Astronautica Sinica
关键词
扩散连接
超塑性状态
钛合金
diffusion bonding, superplastie condition, Ti-6 Al-4 V alloy
