High Value Manufacturing – Bártolo et al. (Eds)
© 2014 Taylor & Francis Group, London, ISBN 978-1-138-00137-4
Melt characterisation of M2 High Speed Steel in Selective Laser Melting
Z.H. Liu, D.Q. Zhang, K.F. Leong & C.K. Chua
Nanyang Additive Manufacturing Centre, School of Mechanical and Aerospace Engineering,
Nanyang Technological University, Singapore
ABSTRACT: Single line scans of M2 High Speed Steel (HSS) were produced by Selective Laser Melting
(SLM) with different laser scan speeds under substrate preheating of 180
◦
C. The cross sections of these line
scans were examined to evaluate their melt profiles in terms of melt contact length, melt width, melt depth and
melt surface contact angle. An appropriate melt profile is effective in reducing ...