Fatigue strength of a Ti–6Al–4V alloy produced by selective laser melting

The fatigue properties and the fracture mechanisms of the Ti–6Al–4V alloy produced by selective laser melting (SLM) from a powder of an CL41TiELI titanium alloy have been studied. Cylindrical blanks were grown at angles of 90° and 45° to a platform. The best fatigue strength is observed in the sampl...

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Veröffentlicht in:	Russian metallurgy Metally 2016-10, Vol.2016 (10), p.935-941
Hauptverfasser:	Gerov, M. V., Vladislavskaya, E. Yu, Terent’ev, V. F., Prosvirnin, D. V., Kolmakov, A. G., Antonova, O. S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Blanks Chemistry and Materials Science Crack initiation Crack propagation Fatigue strength Fracture mechanics Fracturing Laser beam melting Materials Science Metallic Materials Promising Materials and Technologies Titanium base alloys
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The fatigue properties and the fracture mechanisms of the Ti–6Al–4V alloy produced by selective laser melting (SLM) from a powder of an CL41TiELI titanium alloy have been studied. Cylindrical blanks were grown at angles of 90° and 45° to a platform. The best fatigue strength is observed in the samples the blanks of which were grown at an angle of 45°. It is found that the structure of the SLM material can contain portions with unmelted powder particles, which are the places of initiation of fatigue cracks.
ISSN:	0036-0295 1555-6255 1531-8648
DOI:	10.1134/S0036029516100049