The present paper investigates experimentally the effect of normal load and sliding speed on volumetric wear property of different combination of phases like martensite ,pearlite and cementite of hypereutectoid steel. Experiments were carried out under normal load 0.125,0.375,0.625 and 0.875 N,sliding speed 212,636,1060 and1484 rpm.Results show that the wear rates increases with the increases of normal load and sliding speed. It is also found that the sliding speed of 3 m/s, volumetric wear rate is minimum and almost constant for all the phases under all operational conditions. Steels with high and ultrahigh-carbon content have been produced for many centuries (e.g. Wootz and Damascus steel), their microstructure and mechanical properties have only recently begun to be studied with modern scientific methods. These steels have a remarkable combination of
PurposeThis paper aims to study the effect of Al‐Ti‐B grain refiners on the wear behaviour of hypoeutectic (Al‐0.2, 2, 3, 4, 5 and 7Si alloys) Al‐Si alloys against steel counterface using a Pin‐On‐Disc machine under dry sliding conditions.Design/methodology/approachIn the present study, Al‐5Ti‐1B and Al‐1Ti‐3B grain refiners were used for the refinement of α‐Al dendrites in hypoeutectic Al‐Si alloys. Various parameters such as alloy composition, normal pressure, sliding speed and sliding distance were studied on Al‐Si alloys. Worn surfaces were characterized by SEM/EDX microanalysis.FindingsWear resistance of hypoeutectic Al‐Si alloys increases with the addition of Al‐Ti‐B refiners when compared with the absence of grain refiner.Research limitations/implicationsThe effects of normal pressure, sliding speed and sliding distance were studied by varying one parameter and keeping constant the other two parameters.Originality/valueThis paper provides information on improvement in wear properties of Al‐Si alloys by the addition of Al‐Ti‐B grain refiners. The effects of silicon and grain refiners containing Ti/B play a vital role and are responsible for the wear resistance of the alloys, which helps the industrialists in manufacturing Al‐Si alloy components.
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