当前位置: X-MOL 学术Corros. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Localized corrosion behaviour of AA7150 after ultrasonic shot peening: Corrosion depth vs. impact energy
Corrosion Science ( IF 8.3 ) Pub Date : 2018-01-01 , DOI: 10.1016/j.corsci.2017.11.008
Qingqing Sun , Qingyou Han , Rong Xu , Kejie Zhao , Jie Li

Abstract The effect of impact energy on localized corrosion behaviour of ultrasonic shot peened AA 7150 was systematically studied by manipulating peening parameters such as peening duration, peening amplitude, peening distance and peening media size. Needle-like pits with depths deeper than that of the untreated alloy were observed on low energy peened samples. However, localized corrosion was eliminated for high energy peened alloys. The formation of equiaxed nanograins on surface layer significantly enhanced pit initiation resistance but accelerated propagation kinetics. Galvanic interaction between surface layer and substrate alloy caused by surface segregation was also discussed.

中文翻译:

AA7150 超声喷丸处理后的局部腐蚀行为:腐蚀深度 vs. 冲击能量

摘要 通过控制喷丸持续时间、喷丸幅度、喷丸距离和喷丸介质尺寸等喷丸参数,系统研究了冲击能量对超声波喷丸AA 7150局部腐蚀行为的影响。在低能量喷丸样品上观察到深度比未处理合金深的针状凹坑。然而,高能喷丸合金消除了局部腐蚀。在表面层形成等轴纳米晶粒显着提高了抗凹坑启动能力,但加速了传播动力学。还讨论了由表面偏析引起的表面层和基体合金之间的电偶相互作用。
更新日期:2018-01-01
down
wechat
bug