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标题：Ultrasonic impact peening technique for improvement the constant amplitude corrosion-fatigue interaction
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作者：Hussain J. Mohammed Al-Alkawi ; Amer H. Majeed ; Saba Farhan Naser 等
期刊名称：International Journal of Energy and Environment
印刷版ISSN：2076-2895
电子版ISSN：2076-2909
出版年度：2018
卷号：9
期号：3
页码：1-8
出版社：International Energy and Environment Foundation (IEEF)
摘要：The fatigue behavior of 6061-T6 aluminum alloy under constant amplitude loading was investigated in air for as-received and pre-corroded specimens in 3.5% NaCl corrosive solution for 77 days. Constant corrosion-fatigue tests have been done with and without ultrasonic peening treatment under rotating bending load at stress ratio (R= -1) and room temperature (RT= 25 °C). The experimental results presented that the tests of fatigue life on pre-corroded specimens with and without ultrasonic peening revealed a significant reduction in life related with the presence of corrosion defects before cyclic loading. In state of unpeened specimens the constant S-N fatigue strength curve was decreased by 4.5% due to immersed the specimens in corrosive 3.5% NaCl solution for 77 days, while in state of ultrasonically peened specimens the reduction of S-N curve decreased to 2.2% due to the beneficial effect of this treatment for increasing the corrosion-fatigue life. The improvement of fatigue life and corrosion-fatigue life of specimens when applying of ultrasonic peening treatment was 8.69% and 2.3% respectively.
关键词：Corrosion;Fatigue; 6061;T6 Aluminum alloy; Ultrasonic peening treatment; Aluminum alloy;