Identification of cast iron type with using of NDT methods

The aim of this paper is to demonstrate the capability of ultrasonic techniques in the assessment of the structure and properties of cast irons, and also contribute to the database concerning the use of ultrasonic velocity and attenuation measurements for quality control. In the experiments, cast iron specimens with different graphite shape (lamellar, vermicular and nodular shape) and different matrix composition were cast. Ultrasonic velocity measurements were carried out on the as-cast specimens with STARMANS DiO 562–2CH ultrasonic flaw detector. Then, the results of ultrasonic measurements were correlated with the microstructural investigations on the specimens.