Wear-Fatigue Study of Carbon Steels

Abstract

The process of conjoined stress cycling and abrasive or erosive wear is encountered in industry. However, very scant attention has been paid till now to this issue. The paper presents two test rigs designed and built to cope with this experimental problem. Tests were carried out on the range of pure iron (Armco), carbon steels namely S235JR, C45, C70U, C80U, C110U and unalloyed cast steels (L40III, L45III and L50III). Tested iron-based alloys differ in chemical composition, microstructure and Brinell hardness ranging from 80 HB to 350 HB. Stress cycling caused strain hardening of ferrite in hypoeutectoid steels and thus reduced their abrasive wear loss. In the hypereutectoid steel stress cycling impaired integrity of the microstructure thus increasing abrasive wear loss. Alternating stresses enhanced ploughing and cutting micromechanisms of erosion. Tensile stress in the tested cast steel had stronger effect on wear loss than the prior stress history.

Factors Influencing Cavitation Erosion of NiCrSiB Hardfacings Deposited by Oxy-Acetylene Powder Welding on Grey Cast Iron

“…The resulting emission of shock waves and liquid-jet cause degradation of a solid material [4]. Though the CE damage mechanism has primally mechanical nature, it can be intensified by the working fluid corrosive environment, presence of solid-particle, elevated temperature action alone or synergistic interactions between mentioned above deterioration processes [5][6][7]. Unfortunately according to the literature of the subject [8][9][10], cast iron has relatively low CE resistance.…”

Erosion Behavior of Stellite-6 and WC-12Co Coatings on SA213-T22 Boiler Steel

“…The results of the report were average erosion rates. In cases where the particle was softer than the target (H p /H t < 1), the evaluation time was longer and very low erosion rates were observed [21][22][23][24][25]. SiC, one of the hardest materials, was used to clarify erosion rates in a short period of time [26][27][28][29].…”