Abstract
This article investigates the friction and wear of cold rolled high strength steel at various displacement amplitudes. Reciprocal sliding tests are carried out using a ball-on-flat testing apparatus. The tangential force occurring at the contact surface between a high strength steel specimen and an AISI52100 ball is measured during the tests. After each test, the worn surface profile on the steel specimen is determined. Experimental results show that the ratio of the maximum tangential to the normal force remains at 0.7 after an initial rapid increase, and the ratio does not greatly change according to the imposed displacement amplitudes (in the range of 0.05 mm and 0.3 mm). The wear volume loss on the steel specimen increases according to the number of cycles. It is determined that the wear rate of the specimen changes with respect to the imposed displacement amplitude. That is, the wear rate rapidly increases within the displacement amplitude range of 0.05 mm to 0.09 mm, while the wear rate gradually increases when the displacement amplitude is greater than 0.2 mm. The obtained results provide the friction and wear behaviors of cold rolled high strength steel in fretting and reciprocal sliding regimes.
Highlights
Use of cold rolled high strength steel sheets is widespread in the automotive industry due to their outstanding mechanical properties [1,2]
The ratio of the maximum tangential to normal force was independent of the imposed The ratio of the maximum tangential to normal force was independent of the imposed displacement amplitude
The cross-sectional area size of the wear scar increased as the number of cycles increased
Summary
Use of cold rolled high strength steel sheets is widespread in the automotive industry due to their outstanding mechanical properties [1,2]. The steel is used for automobile body panels, bumpers, and door panels. These steel sheets are often used for tribo-components such as automotive seat sliding tracks. A typical automotive seat sliding track consists of two rails and metallic balls (or cylindrical rollers). The metallic balls enable the movement of the upper rail on the lower rail. The rails are usually coated using an electro-deposition method. The anti-friction property of an electro-deposited coating has been studied by determining the coefficient of kinetic friction [3]. Tribology, 1st ed.; John John Wiley Wiley&.
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