Microstructure, Properties and Damage Mechanisms by Water Jet Cutting of TiB2-Ti Cermets Prepared by SPS
Process parameters of abrasive water jet (AWJ) machining of TiB2+Ti ceramic matrix composites with 10%, 15% and 20% of Ti reinforcement were investigated. The article focuses on microstructure damage processes and kerf geometry in AWJ machining of TiB2+Ti composites. Two different abrasive water jet cutting speeds and three sorts of composite materials, together with a reference monolithic one, are considered. Microstructure in machined samples was observed using scanning electron microscope. The characteristics of the cuts such as kerf top width, kerf angle and surface roughness were studied. The influence of cutting speed on abrasive process in composites with various amounts of Ti was investigated. It was found that roughness decreases and kerf taper ratio increases with increase in amount of Ti.
KeywordsAbrasive water jet machining TiB2+ti composite Microstructure Kerf geometry
This work was supported by the projects “CeKSiM”, ITMS 26220120056, of the Operational Program “Research and Development” financed through ERDF, by APVV-15-0014 (ProCor) and VEGA 1/0096/18.
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