Influence of post-impact heat treatment on the high cycle fatigue behavior of GH4169 alloy

Influence of post-impact heat treatment on the high cycle fatigue behavior of GH4169 alloy | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 13 October 2025 V1 Latest version Share on Influence of post-impact heat treatment on the high cycle fatigue behavior of GH4169 alloy Authors : Xiaojun Guo , Xu Jia , 恒 曹 , Y. Chen , Rong Jiang [email protected] , and Yingdong Song Authors Info & Affiliations https://doi.org/10.22541/au.176034801.10184187/v1 144 views 161 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Foreign object damage (FOD) is a common issue during aero-engine operation process, which can usually lead to high-cycle fatigue (HCF) fracture failure of fan and compressor blades. To investigate the effect of post-impact heat treatment on the HCF performance of compressor blade alloy GH4169 with FOD, this study uses an FOD simulation device to conduct impact tests on specimens. The impacted specimens are subjected to heat treatment of varying duration, followed by HCF testing. The results show the presence of adiabatic shear bands (ASB) on the exit side of the impact crater, with lengths mostly in the range of 100-250 μm. HCF tests reveal that the microscopic defects generate by FOD significantly reduce the fatigue strength of GH4169 alloy. But its mechanical properties and fatigue resistance are enhanced to some extent by certain post-impact heat treatment process, and the beneficial influence on the HCF strength is most evident at the stress ratio of -1 condition associated with the fatigue crack initiation mode transition from ASB cracking to slip band cracking. These findings show that post-impact heat treatment can somewhat restore the fatigue performance of GH4169 alloy after FOD, contributing to improved service life and reliability of aero-engine compressor blades. Supplementary Material File (manuscript.docx) Download 6.13 MB Information & Authors Information Version history V1 Version 1 13 October 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords heat treatment high cycle fatigue ni-base superalloy Authors Affiliations Xiaojun Guo Nanjing University of Aeronautics and Astronautics View all articles by this author Xu Jia Nanjing University of Aeronautics and Astronautics View all articles by this author 恒 曹 Nanjing University of Aeronautics and Astronautics View all articles by this author Y. Chen Xiamen University of Technology View all articles by this author Rong Jiang [email protected] Nanjing University of Aeronautics and Astronautics View all articles by this author Yingdong Song Nanjing University of Aeronautics and Astronautics View all articles by this author Metrics & Citations Metrics Article Usage 144 views 161 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Xiaojun Guo, Xu Jia, 恒 曹, et al. Influence of post-impact heat treatment on the high cycle fatigue behavior of GH4169 alloy. Authorea . 13 October 2025. DOI: https://doi.org/10.22541/au.176034801.10184187/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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