A complex procedure for describing porosity in precision cast elements of aircraft engines made of MAR-M 247 and MAR-M 509 superalloys

摘要

An analysis of the quality assurance systems applied in industry for an assessment of porosity in precision cast parts of aircraft engines has shown that they characterize with a lack of repeatability or reproducibility of the test results obtained. For this reason, a comprehensive procedure of porosity assessment has been developed. It has been shown in the research described here that the procedure guarantees obtaining an unambiguous, full characterization of porosity as well as accurate and repeatable test results.