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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >On the chloride-induced pitting of ultra fine grains 5052 aluminum alloy produced by accumulative roll bonding process
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On the chloride-induced pitting of ultra fine grains 5052 aluminum alloy produced by accumulative roll bonding process

机译：累积轧制法制备的超细晶粒5052铝合金的氯化物点蚀研究

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摘要

Pitting corrosion susceptibility of ultra fine grain (UFG) 5052 aluminum alloy (AA 5052) sheets highly deformed by accumulative roll-bonding (ARB) was investigated in 3.5 wt% NaCl solution using poten-tiodynamic polarization, cyclic voltammetry and immersion tests. The morphology of localized attacks was analyzed by SEM-EDS. Pitting corrosion resistance of samples was diminished with increasing the number of ARB passes which is presumably due to microstructure refinement and increasing the defect density.
机译：使用电位-动力极化，循环伏安法和浸没测试，研究了在3.5 wt％的NaCl溶液中，由于累积的滚动粘合（ARB）而高度变形的超细晶粒（UFG）5052铝合金（AA 5052）板材的点蚀敏感性。通过SEM-EDS分析了局部攻击的形态。样品的抗点蚀性能随ARB通过次数的增加而降低，这可能是由于微结构的细化和缺陷密度的增加。

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