Printing with Ultrasound on and Off (IMAGE) RMIT University Caption Visualisation of grain structure in 3D printed Inconel 625 achieved by turning the ultrasound on and off during printing. Credit RMIT University Usage Restrictions credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.