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Mechanical Properties of LY-12 Connecting Structure: Influence of Corrosion and Quenching

机译：LY-12连接结构的力学性能：腐蚀和淬火的影响

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摘要

This paper conducts a corrosion experiments by quenching and un-quenching connecting structure of LY-12 sheet and fastening bolt on two temperatures of 25 degrees C and 40 degrees C, with a NaCl solution concentration of 3%, 3.5% and a clearance width of 0.02 mm, 0.06 mm and 0.1 mm, respectively. Static experiments on the mechanical properties were performed and the analysis on conservation rate of mechanical property of the samples after corrosion on the corresponding stations revealed that quench can improve basic mechanical properties only, but it could not change the degraded rate of mechanical properties in comparison to unquenched. Moreover, the constant ratio is not changed by corrosion environment of initial mechanical properties between them. It is the Lognormal distribution that matches the data of the depth of crevice corrosion pits best no matter it is quenched or not. It was also observed that the smaller the crevice sizes, deeper the depth of the corrosion pits.
机译：本文通过对LY-12薄板的连接结构和紧固螺栓在25°C和40°C的两个温度下进行淬火和非淬火的腐蚀实验，NaCl溶液的浓度为3％，3.5％，间隙宽度为分别为0.02毫米，0.06毫米和0.1毫米。进行了力学性能的静态实验，对在相应工位上腐蚀后的样品力学性能的守恒率进行分析，结果表明，淬火只能改善基本力学性能，但与相比，不能改变力学性能的下降速率。不急。而且，恒定比率不会因它们之间的初始机械性能的腐蚀环境而改变。无论是否淬火，它都是对数正态分布最适合缝隙腐蚀坑深度的数据。还观察到，缝隙尺寸越小，腐蚀点的深度越深。

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