Volume 12, Issue 3 (September 2015)                   IJMSE 2015, 12(3): 27-37 | Back to browse issues page

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Nazemi H, Ehteshamzadeh M. AN INVESTIGATION ON FATIGUE AND FATIGUE CORROSION BEHAVIOR OF Cr-Si SPRING STEEL AFTER Zn-Ni ELECTROPLATING USING WEIBULL STATISTICAL MODEL. IJMSE 2015; 12 (3) :27-37
URL: http://ijmse.iust.ac.ir/article-1-827-en.html
AN INVESTIGATION ON FATIGUE AND FATIGUE CORROSION BEHAVIOR OF Cr-Si SPRING STEEL AFTER Zn-Ni ELECTROPLATING USING WEIBULL STATISTICAL MODEL
H. Nazemi , M. Ehteshamzadeh
Abstract:   (21494 Views)
Compression springs were prepared from Cr-Si high strength spring steel and coated with pure Zn and ZnNi by electroplating process. The effect of baking after electroplating as well as applying an electroless nickel interlayer on the fatigue and fatigue corrosion of the springs was investigated. The results were analyzed using weibull statistical model. A considerable improvement (8%) in fatigue life of the electroplated springs with Zn-Ni was observed in the presence of Ni interlayer. In addition, baking of these electroplated springs improved fatigue life by 4%. The fatigue life under salt spraying conditions, however, has demonstrated remarkable reduction by 40%, 34% and 30% for Zn-Ni plating, backed and unbaked Zn-Ni plating containing Ni interlayer, respectively
Keywords: Cr-Si spring steel, Zn-Ni alloy electroplating, Fatigue, Fatigue corrosion
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Type of Study: Research Paper | Subject: forming and mechanical properties
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