Evaluation of the Impact of Surface Treatment on the Turbine Blade Performance

Abstract

The combination of a hard surface and a soft interior is greatly valued in modern engineering because it can withstand very high stress and fatigue, a property that is required in such items as gears, turbine blade and anti-friction bearings. Surface-hardened steel is also valued for its low cost and superior flexibility in manufacturing. This study looked at how the carbonization temp affected the resistance against wear and hardness of the steel alloy utilized to make turbine impellers. The specimens were activated in Co2 at each temperature for soaking at about 30, 60, 90, and 120 minutes. The carbonization temp was changed from 850, 900, and 950 to 1000C°. The Carburized steels are put through various tests, including wear tests utilizing a pin on a desk, hardness tests utilizing a Brinell-hardness tester, and phase observations utilizing an EDX (Energy Dispersive X-Ray). The findings demonstrated that all carburizing temps improved resistance against wear, and the wear rate decreased with rising temp and prolonged immersion in the carburized medium, minimum wear rate founded at 1000C 0 for 2hr as soaking time. Additionally, hardness exhibited the same upward trend in resistance against wear as temp and time and maximum hardness recorded at 1000C for soaking time of 2hr was 106BHN compared with plain material 56BHN. EDX analysis demonstrates that the carburizing process for all treated specimens creates an extra carbon phase.