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Influence of De-icers on the Corrosion and Fatigue Behavior of 4140 Steel

机译:除冰剂对4140钢腐蚀和疲劳行为的影响

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摘要

The purpose of this test was to evaluate the effects of calcium magnesium acetate (CMA) and sodium chloride (NaCl)—two common substances used to de-ice roadways—on the corrosion and fatigue behavior of annealed AISI 4140 steel. When CMA-corroded, NaCl-corroded, and as-machined samples were tested using R = 0.1, and f = 20 Hz, it was found that, within the scope of this study, samples corroded in both 3.5% CMA solution and 3.5% NaCl solution exhibited a lower fatigue strength than samples tested in the as-machined, uncorroded condition. For the short lives tested in this study, the difference in the effects of CMA and NaCl is minimal. However, at longer lives it is suspected, based on the trends, that the CMA solution would be less detrimental to the fatigue life.
机译:该测试的目的是评估醋酸钙镁(CMA)和氯化钠(NaCl)(用于道路除冰的两种常见物质)对退火的AISI 4140钢的腐蚀和疲劳行为的影响。当使用R = 0.1和f = 20 Hz测试CMA腐蚀,NaCl腐蚀和加工后的样品时,发现在本研究范围内,在3.5%CMA溶液和3.5%CMA溶液中腐蚀的样品NaCl溶液比在未腐蚀的机加工状态下测试的样品具有更低的疲劳强度。对于本研究中测试的短寿命,CMA和NaCl的作用差异很小。但是,基于趋势,人们怀疑CMA解决方案使用寿命更长,因此对疲劳寿命的损害较小。

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