High cycle fatigue life of Ti6Al4V alloy produced by direct metal laser sintering

0481449 - ÚFM 2018 RIV CH eng C - Conference Paper (international conference)
Konečná, R. - Nicoletto, G. - Bača, A. - Kunz, Ludvík
High cycle fatigue life of Ti6Al4V alloy produced by direct metal laser sintering.
Solid State Phenomena. Vol. 258. Zürich: Trans Tech Publications Ltd, 2017 - (Šandera, P.), s. 522-525. Scientific.Net. ISBN 978-30-383-5626-4. ISSN 1012-0394. E-ISSN 1662-9779.
[MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./. Brno (CZ), 27.06.2016-29.06.2016]
Institutional support: RVO:68081723
Keywords : Additive Manufacturing * Fatigue Life * Laser Powder Melting * Titanium Alloy
OECD category: Audio engineering, reliability analysis
https://www.scientific.net/SSP.258.522

High cycle fatigue life of Ti6Al4V alloy specimens manufactured by Direct Metal Laser Sintering (DMLS) was experimentally determined. The DMLS fabrication process was characterized by a 400 W laser power and 50 micrometer layer melted thickness. Post-fabrication heat treatment consisted in stress relieving for 3 h at 720 °C in vacuum with subsequent cooling in argon atmosphere. Fatigue testing of specimens oriented in three different directions with respect to the material build direction was performed with the aim to examine the influence of the layered microstructure on the fatigue behavior. Results of measurement of surface roughness, metallographic examinations of the layered material and fractographic investigation of the fatigue fracture surfaces were employed in the discussion of fatigue crack initiation in DMLS fabricated Ti6Al4V alloy.
Permanent Link: http://hdl.handle.net/11104/0277072