In this work, the progression of erosion on the surface of ex-service low pressure steam turbine blades was investigated using scanning electron microscopy. However, most of the published research on this wear phenomenon is performed on laboratory test rigs, instead of addressing WDE of actual steam turbine blades.
Steam turbine blades are highly subjected to water droplet erosion (WDE) caused by high energy impingement of liquid water droplets. Water droplet erosion of stainless steel steam turbine blades The influence of impact velocity on erosion in an attempt to represent the in-service conditions. The collected data were processed both qualitatively and quantitatively for multi-aspects damage study. This work covers the characterization of the erosion damage on Ti-6Al-4V alloy in two parts: - The water droplet erosion damage through a novel experimental approach. The influence of base material microstructure and impact parameters were considered in erosion evaluation in present study. Therefore, characterization of the water droplet erosion damage on Ti-6Al-4V receives the major importance. The main objective of this research work (CRIAQ MANU419 project) is to understand the erosion induced by water droplets on Titanium alloy to eventually optimize the erosion resistance of the Ti-based compressor blade. However, erosion damage of the compressor blades in overspray stage is one of the major concerns associated with the inlet fogging system. Micro-scaled droplets introduced into the inlet airflow allow the cooling of entering air as well as intercooling the compressor (overspray) and thus optimizes the output power. Inlet fogging system is the most common method used to augment gas turbine output during hot days high ambient temperature causes strong deterioration of the engine performance. For example, aircraft body exposed to rain, steam turbine blade, and recently in gas turbine coupled with inlet fogging system. Water impingement erosion of materials can be a life-limiting phenomenon for the components in many erosive environments. Water droplet erosion mechanisms of Ti-6Al-4V
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