Abstract

A systematic research on the fracture failure of the tenon of X20Cr13 blade has been carried out. This research consists of two parts: comprehensive analysis and simulation analysis. The fretting wear produces the failure source which leads to the occurrence and development of cracks. M23C6 carbides damage the continuity of matrix structure and create conditions for the initiation and propagation of cracks. The simulation analysis further confirmed that the stress at the root of blade tenon is too large and the possibility of failure caused by resonance is eliminated. Some constructive suggestions are put forward for this engineering problem.

中文翻译：

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压气机叶片榫头裂纹萌生与扩展机理的综合调查与模拟研究

摘要

对X20Cr13叶片的榫头断裂失效进行了系统研究。本研究由综合分析和仿真分析两部分组成。微动磨损产生失效源，导致裂纹的发生和发展。M23C6碳化物破坏了基体组织的连续性，为裂纹的萌生和扩展创造了条件。仿真分析进一步证实，叶片榫头根部应力过大，消除了共振失效的可能性。针对这一工程问题提出了一些建设性的建议。