现代制造工程Issue(8)：90-95,6.DOI:10.16731/j.cnki.1671-3133.2026.08.012
机加工与阳极化顺序对7050-T7451铝合金细节疲劳额定截止值的影响研究
Influence of machining and anodising sequence on detail fatigue rating cutoff of 7050-T7451 aluminium alloy
摘要
Abstract
As a critical structural material in the aerospace industry,the fatigue performance of 7050-T7451 aluminum alloy di-rectly affects the reliability of components.Detail Fatigue Rating cutoff(DFRcutoff)is a key indicator for evaluating the fatigue performance of materials and holds great significance for fatigue life analysis.The effects of the sequence of machining and anodi-zing on the DFRcutoff of this material are comparatively investigated via DFRcutoff specimen-level tests.Two test processes are de-signed,namely machining followed by anodizing and anodizing followed by machining.The results show that the DFRcutoff value under the anodizing followed by maching process is significantly higher than that of the maching followed by anodizing process,with a relative increase of 12％.Based on the test results,a principle for determining the applicable scenarios of the process se-quence according to the service environment is proposed,which can provide a quantitative basis for the fatigue design and process optimization of components made from this material.关键词
阳极化/7050-T7451铝合金/细节疲劳额定截止值/疲劳/机加工/顺序Key words
anodising/7050-T7451 aluminium alloy/detail fatigue rating cutoff/fatigue/machining/sequence分类
航空航天引用本文复制引用
姜昊,杨荣,邹鹏,刘玄..机加工与阳极化顺序对7050-T7451铝合金细节疲劳额定截止值的影响研究[J].现代制造工程,2026,(8):90-95,6.基金项目
工信部民机预研课题项目(HN-2024-KJ-06004) （HN-2024-KJ-06004）
