Speaker
Mr
STEVE LEKEKE MANGENA
(TSHWANE UNIVERSITY OT TECHNOLOGY, PRETORIA)
Description
A 4.4 kW Sinar continuous wave Nd: YAG solid-state laser was used for laser hardening of turbine blade steel (chemical composition: 0.19%C; 0.32%Si; 0.38%Mn; 0.01%P; 0,002%S, 12.72%Cr, 0,41%Ni). The laser processing parameter i.e. scan speed and laser power were varied while the temperature was held constant 1050oC. The characterisation of the hardened surfaces was carried out by Optical Microscopy (OPM), Scanning Electron Microscopy (SEM/EDS) and X-ray Diffraction (XRD). Hardness measurements were carried out, a through-thickness hardness profile (indentations form the surface of the alloyed layer through to the base) was determined with a 1
Primary author
Mrs
PATRICIA POPOOLA
(TSHWANE UNIVERSITY OF TECHNOLOGY, PRETORIA)
Co-authors
Mr
RAMPEDI LIPSON
(NATIONAL LASER CENTRE, CSIR)
Mr
STEVE LEKEKE MANGENA
(TSHWANE UNIVERSITY OT TECHNOLOGY, PRETORIA)
