Effect of surface roughness on the fatigue life of laser additive manufactured Ti6Al4V alloy

0473007 - ÚFM 2017 RIV CZ eng J - Článek v odborném periodiku
Bača, A. - Konečná, R. - Nicoletto, G. - Kunz, Ludvík
Effect of surface roughness on the fatigue life of laser additive manufactured Ti6Al4V alloy.
Manufacturing Technology. Roč. 15, č. 4 (2015), s. 498-502. ISSN 1213-2489
Institucionální podpora: RVO:68081723
Klíčová slova: Additive manufacturing * direct metal laser sintering * Fatigue life
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

Abstract

Direct Metal Laser Sintering enables production of fully dense metal parts with comparable or higher tensile properties as compared to the conventionally produced parts. However, for a more widespread use of this additive manufacturing technique, material data should be obtained and evaluated with respect to the influencing manufacturing factors. In the case of Ti6Al4V alloy, the fatigue performance can be highly susceptible to the process related issues, such as build direction, porosity and surface condition. This study was undertaken to examine the fatigue life of Ti6Al4V specimens manufactured by Direct Metal Laser Sintering (DMLS) technique and to investigate the influence of the surface state on the fatigue life. A high degree of anisotropy in the fatigue performance associated with the specimen build orientation was determined.

Trvalý link: http://hdl.handle.net/11104/0270182