热处理对C型金属封严环组织与性能的影响

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关键词：金属封严环；固溶时效处理;退火处理；微观组织；细化晶粒

中图分类号：TG156 文献标志码：A 文章编号：1003-5168（2025）20-0080-05

DOI： 10.19968/j.cnki.hnkj.1003-5168.2025.20.016

Effect of Heat Treatment on the Microstructure and Properties of C-type Metal Sealing Ring

LIU Yaxiong1 YUAN Gui'WUXinzhou'WU Weili²MA Panpan² （1.AECC Changjiang Engine Company Limited， Yueyang 4141Oo，China; 2.Nanchang Hangkong University，School of Materials Science and Engineering，Nanchang 33O063，China）

Abstract：[Purposes] This study aims to investigate the influence of heat treatment processes on the microstructure and properties of GH4169 ally C-type sealing rings.[Methods]An intermediate annealing process was introduced into the solution and aging treatment.The effect of intermediate annealing on the microstructure and properties of the sealing rings was analyzed through metalographic examination and hardnesstesting.[Findings] The introduction of the intermediate annealing process during the solution and aging treatment effectively refined the grains.At higher annealing temperatures，the grain refinement ffects were similar for both sequences.However，at lower annealing temperatures， the pre-aging annealing process resulted in better grain refinement compared to the post-aging annealing process.[Conclusions] Within the intermediate annealing processes studied， the pre-aging annealing at 350∘C for 4 hours yielded the best grain refinement effect， increasing the grain size grade by approximately 11.5%

Keywords： metal sealing ring;solution and aging treatment; annealing treatment; microstructure; grain refinement

0 引言

叶片顶端与机匣之间、整流器内环与转子鼓筒之间、转子前后端面与机匣之间都存在着漏气现象[1-2]，极大地影响了航空发动机的工作效率。（剩余4383字）