ADHESIVE WEAR BEHAVIOR OF AISI 1018 LOW CARBON STEEL UNDER DIFFERENT QUENCHING MEDIA

In this work, wear behavior of AISI 1018 low carbon steel treated by different quenching media was studied. The specimens were treated by quenching at austenizing temperaturefor 1h. and then cooling in different quenching media (water, salt water, sugar water). After quenching, the specimens will be tempered at 200℃ for 20 min. Many tests were carried out for the specimens such as Vickers hardness test and wear test by using pin- on- disc technique. Wear test was done for the specimens before and after quenching by two stages: First stage by changing applied loads. While the second stage was done by changing the time. Micrographs were taken by optical microscopy (OM) for the specimens before and after quenching to evaluate the microstructure. The results of this work showed that an improving in hardness and wear resistance for the specimen quenched by sugar water more than for salt water and water respectively. While the micrographs showed that forming an amount of martensite phase in ferrite matrix and obviously refining in grains for sugar water more than for another media. Also surface topography analysis shows that finer grooves and less debris for sugar water more than for another media.