Title :
Research on model of fatigue microcrack-nucleating in aluminum alloy
Author :
Bian, Guixue ; Chen, Yueliang ; Hu, Jianjun ; Yang, Maosheng
Author_Institution :
Qingdao Branch, Naval Aeronaut. Eng. Univ., Qingdao, China
Abstract :
The fatigue tests for LY12 aluminum alloys specimens under various stress levels were performed. The categories of the microcracks nucleating were determined using scanning electron microscopy (SEM) measured from specimens surfaces. The experiment results show a large number of micro cracks could incubate from cracked particles under a higher stress ratio, and incubate from deboned particles under a higher maximal stress. The microcracks formation models of fractured particles and deboned particles were presented.
Keywords :
aluminium alloys; fatigue cracks; fatigue testing; microcracks; nucleation; scanning electron microscopy; LY12 aluminum alloy; SEM; fatigue microcrack nucleation; fatigue testing; fracture particles; microcracks formation models; scanning electron microscopy; Aluminum alloys; Atmospheric modeling; Fatigue; Grain size; Microstructure; Stress; aluminum alloy; crack formation; grain boundaries; microstructure; particle;
Conference_Titel :
Reliability, Maintainability and Safety (ICRMS), 2011 9th International Conference on
Conference_Location :
Guiyang
Print_ISBN :
978-1-61284-667-5
DOI :
10.1109/ICRMS.2011.5979304
