Investigations of Anti-Wear Coatings in Terms of Their Applicability to Tools in the FSW Process |
| W. Wieckowskia, P. Wieczorekb, J. Lackib
aCzestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Institute of Mechanical Technologies, al. Armii Krajowej 21, 42-201 Czestochowa, Poland bCzestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute of Materials Engineering, Czestochowa, Poland |
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| The tools used in the process of friction stir welding wear gradually, which is one of the causes of joint defects. Instead of using expensive wear-resistant materials for tools, tool life can be extended by using anti-wear tribological coatings. Due to huge development that has been observed in coating technologies, correct choice of a coating should be based on a series of tests in order to evaluate both mechanical and tribological properties. The aim of this study was to evaluate surface thickness and morphology and resistance to wear of commercial anti-wear coatings such as TiAlN, TiN, TiCN and AlCrN, deposited on hot work steel X40CrMoV5-1 as a base material. Examinations of coatings were conducted in order to explore potential opportunities for their use in tools, designed for the process of friction stir welding of aluminium alloy 7075 T6 to improve tool life. The scratch test method was used to evaluate the adhesiveness of coatings to the base material. Tribological properties of the examined coatings were evaluated based on the results of the examinations obtained on T-01 pin-on-disc tester and T-05 block-on-ring testers. The results of tribological tests conducted under dry friction conditions demonstrated that the highest resistance to abrasive wear among the coatings examined was found for the AlCrN. |
DOI:10.12693/APhysPolA.135.177 topics: friction, wear, anti-wear coatings |