Analysis of Fatigue Fracture Surfaces in （疲劳断裂表面的分析）.pdfVIP

International Journal of Mining, Metallurgy Mechanical Engineering (IJMMME) Volume 1, Issue 2 (2013) ISSN 2320–4060 (Online) Analysis of Fatigue Fracture Surfaces in Aluminum Alloy 2024 T351 Benguediab Mohamed, Mazari Mohamed and Ranganathan Narayawami with identifying the type of failure, the locating fracture Abstract— A method for quantitative analysis of fatigue fracture origin, determining the material compositions, microstructure surfaces is proposed. The method consists of determining the spatial and properties and providing a general explanation for the distribution of significant fractographic features using the Scanning failure [7]. Today, with the development of scanning electron Electron Microscopy. The results obtained under constant amplitude microscopy, which has become an indispensable tool for the fatigue tests show that different crack propagation can be identified by this technique. Significant effects due to load ratio changes have analysis of fracture surfaces, it is possible to identify the been quantified. The technique developed is then applied to fracture different fractographic features representative of fatigue surfaces obtained under variable amplitude loading. The analyses of failures, such fatigue striations, crystallographic facets or the results bring out differences in crack growth mechanisms under dimples [8,9]. Ever since the observations of Forsyth [ 10] the studied test conditions.