A review of the as-built SLM Ti-6Al-4V mechanical properties towards achieving fatigue resistant designs

Agius, D, Kourousis, K and Wallbrink, C 2018, 'A review of the as-built SLM Ti-6Al-4V mechanical properties towards achieving fatigue resistant designs', Metals, vol. 8, no. 1, pp. 1-25.


Document type: Journal Article
Collection: Journal Articles

Title A review of the as-built SLM Ti-6Al-4V mechanical properties towards achieving fatigue resistant designs
Author(s) Agius, D
Kourousis, K
Wallbrink, C
Year 2018
Journal name Metals
Volume number 8
Issue number 1
Start page 1
End page 25
Total pages 25
Publisher MDPI AG
Abstract Ti-6Al-4V has been widely used in both the biomedical and aerospace industry, due to its high strength, corrosion resistance, high fracture toughness and light weight. Additive manufactur-ing (AM) is an attractive method of Ti-6Al-4V parts' fabrication, as it provides a low waste alterna-tive for complex geometries. With continued progress being made in SLM technology, the influence of build layers, grain boundaries and defects can be combined to improve further the design process and allow the fabrication of components with improved static and fatigue strength in critical loading directions. To initiate this possibility, the mechanical properties, including monotonic, low and high cycle fatigue and fracture mechanical behaviour, of machined as-built SLM Ti-6Al-4V, have been critically reviewed in order to inform the research community. The corresponding crystallographic phases, defects and layer orientations have been analysed to determine the influence of these fea-tures on the mechanical behaviour. This review paper intends to enhance our understanding of how these features can be manipulated and utilised to improve the fatigue resistance of components fab-ricated from Ti-6Al-4V using the SLM technology.
Subject Aerospace Materials
Numerical Modelling and Mechanical Characterisation
Interdisciplinary Engineering not elsewhere classified
Keyword(s) Additive manufacturing
Fatigue
Fracture
Mechanical properties
Selective laser melting
Ti-6Al-4V
DOI - identifier 10.3390/met8010075
Copyright notice © 2018 by the authors. Licensee MDPI, Basel, Switzerland. Open access, (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
ISSN 2075-4701
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