TY - JOUR
T1 - A review of the as-built SLM Ti-6Al-4V mechanical properties towards achieving fatigue resistant designs
AU - Agius, Dylan
AU - Kourousis, Kyriakos I.
AU - Wallbrink, Chris
N1 - Publisher Copyright:
© 2018 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2018/1/19
Y1 - 2018/1/19
N2 - 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.
AB - 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.
KW - Additive manufacturing
KW - Fatigue
KW - Fracture
KW - Mechanical properties
KW - Selective laser melting
KW - Ti-6Al-4V
UR - http://www.scopus.com/inward/record.url?scp=85040936356&partnerID=8YFLogxK
U2 - 10.3390/met8010075
DO - 10.3390/met8010075
M3 - Review article
AN - SCOPUS:85040936356
SN - 2075-4701
VL - 8
JO - Metals
JF - Metals
IS - 1
M1 - 75
ER -