Product Code: ICAL06_302

Diode Laser Metal Deposition: The Effect of Pulsed Beam Parameters on Superalloy Microstructure and Deposit Morphology
Authors:
Andrew Pinkerton, Univ. of Manchester; Manchester Great Britain
Michael Preuss, The University of Manchester; Manchester Great Britain
Richard Moat, The University of Manchester; Manchester Great Britain
Lin Li, The University of Manchester; Manchester Great Britain
Philip Withers, The University of Manchester; Manchester Great Britain
Presented at ICALEO 2006

This work describes a study of laser direct metal deposition (LDMD), using a diode laser in pulsed (discontinuous beam) mode and a coaxial powder nozzle. An experimental study analyses the effect of pulse parameters on the microstructure of thin-wall Waspaloy (nickel superalloy) parts and a simple model is used to explain some of the trends seen. Findings indicate that varying pulse parameters is potentially a useful way of controlling laser deposited superalloy part properties.