Characterization of titanium laser welds

0537576 - FZÚ 2021 RIV CZ eng C - Conference Paper (international conference)
Chmelíčková, H. - Hiklová, H. - Václavek, L. - Tomáštík, J. - Čtvrtlík, Radim
Characterization of titanium laser welds.
Acta Polytechnica CTU Proceedings. Vol. 27. Prague: Czech Technical University in Prague, 2020, s. 145-148. ISBN 978-80-01-06735-2. ISSN 2336-5382.
[International Conference on Local Mechanical Properties /14./. Prague (CZ), 06.11.2019-08.11.2019]
Institutional support: RVO:68378271
Keywords : elasticity * laser welding * nanohardness * surface profile * titanium
OECD category: Materials engineering

Butt welding of commercially pure titanium Grade 1 and Ti6Al4V alloy sheets using a pulsed Nd:YAG laser KLS 246 - 102 LASAG were carried out to determine optimal values of pulse energy and pulse length to create completely penetrated weld. Surface peak power density of about 3.105 W.cm−2 was found as an optimal value. Weld dimensions, both face width and penetration depth, are found to be proportional to increasing energy and decreasing pulse length. Gentle sagging and root penetration were revealed by means of contact surface profilometry. The nanohardness tests on transverse cross-sections detected approximately 50% higher hardness in the fusion zone than in the base material.

Permanent Link: http://hdl.handle.net/11104/0315398