| 钛合金喷注器扩散钎焊失效分析与改进研究 |
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| 引用本文： | 刘彦杰,杨俊,吴建军,刘涛,朱铭德.钛合金喷注器扩散钎焊失效分析与改进研究[J].火箭推进,2012,38(4):60-67. |
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| 作者姓名： | 刘彦杰 杨俊 吴建军 刘涛 朱铭德 |
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| 作者单位： | 1. 国防科技大学航天与材料工程学院,长沙,410073
2. 上海空间推进研究所,上海,201112 |
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| 基金项目： | 国家“863”项目(2007AA7050604) |
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| 摘 要： | 某次试车中发动机喷注器出现扩散钎焊失效故障,根据失效焊缝的扫描电镜断口观察、X射线光电子能谱和金相分析结果对喷注器焊接结构、工艺参数等进行了改进研究。仿真、试件试验和热试车结果表明,改进后喷注器扩散钎焊强度和一致性明显提高。
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| 关 键 词： | 钛合金喷注器 扩散钎焊 失效分析 改进 |
Failure analysis and improvement on diffusion brazing of titanium alloy injector |
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| LIU Yan-jie,YANG Jun,WU Jian-jun,LIU Tao,ZHU Ming-de.Failure analysis and improvement on diffusion brazing of titanium alloy injector[J].Journal of Rocket Propulsion,2012,38(4):60-67. |
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| Authors: | LIU Yan-jie YANG Jun WU Jian-jun LIU Tao ZHU Ming-de |
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| Institution: | 1.College of Aerospace and Materials Engineering,National University of Defense Technology,Changsha 410073,China; 2.Shanghai Institute of Space Propulsion,Shanghai 201112,China) |
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| Abstract: | Because the diffusion brazing invalidation of the titanium alloy injector occurred in an engine hot test,an improvement research of the injector welding configuration and parameters was performed based on the failure analysis by scanning electron micrograph,metallographic analysis and XPS methods.The results of simulation and test show that intensity and consistency of the improved diffusion welding are evidently enhanced. |
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| Keywords: | titanium alloy injector diffusion brazing failure analysis improvement |
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