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Fatigue performance of thermal spray coatings on carbon steel: a review

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This paper contributes to a review of the research of the fatigue behaviour of thermal spray coatings on carbon steel. Previous studies provide the experimental characterization of the fatigue resistance of coated carbon steel. | Fatigue performance of thermal spray coatings on carbon steel a review International Journal of Mechanical Engineering and Technology IJMET Volume 10 Issue 03 March 2019 pp. 1285 1300 Article ID IJMET_10_03_131 Available online at http www.iaeme.com ijmet issues.asp JType IJMET amp VType 10 amp IType 3 ISSN Print 0976-6340 and ISSN Online 0976-6359 IAEME Publication Scopus Indexed FATIGUE PERFORMANCE OF THERMAL SPRAY COATINGS ON CARBON STEEL A REVIEW M. A. M. Halmi Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia UTHM 86400 Johor Malaysia M. A. Harimon Faculty of Mechanical and Manufacturing Engineering Centre for Technology Oil amp Gas Teaching Factory Universiti Tun Hussein Onn Malaysia UTHM 86400 Johor Malaysia L. Mohd Tobi Centre for Technology Oil amp Gas Teaching Factory Universiti Tun Hussein Onn Malaysia UTHM 86400 Johor Malaysia M. F. Mahmod Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia UTHM 86400 Johor Malaysia ABSTRACT This paper contributes to a review of the research of the fatigue behaviour of thermal spray coatings on carbon steel. Previous studies provide the experimental characterization of the fatigue resistance of coated carbon steel. Different coating powders were deposited to a different type of carbon steels. Also S-N curves were drawn from axial- and rotating bending fatigue test to determine the fatigue strength or fatigue limit of the samples. Thermal spray coatings showed great improvement to the work hardening effect but worsen the fatigue life due to the inclusion of oxide and pores the presence of stress concentrators and high microcrack density. Moreover the effects of the surrounding environment have also resulted in pros and cons towards the fatigue strength. An improvement however can be done with the shot peening treatment which significantly increases the compressive residual stress at interfaces of coating substrate. The high compressive residual .