Fatigue Behavior of 51 Vol.% Porous Ti-6Al-4V Alloy

Emin Erkan Aşık; Bensu Tunca; Gül Ipek Nakaş; Şakir Bor

doi:10.4028/www.scientific.net/MSF.783-786.1221

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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Fatigue Behavior of 51 Vol.% Porous Ti-6Al-4V...

Fatigue Behavior of 51 Vol.% Porous Ti-6Al-4V Alloy

Abstract:

Porous titanium alloys are widely used as implant materials due to their mechanical behavior similar to that of bone. In addition, fatigue properties of implant materials are especially important since medical implants mostly exposed to cyclic compressive loading conditions. In this study, porous Ti-6Al-4V alloy has been produced via sintering at 12000C for 2 hours employing magnesium space holder technique. Porosity of the produced foams were measured according to Archimedes’ principle and calculated to be in the range of 51 ± 1 vol.%. Mechanical properties of the foams were characterized by monotonic compressive and compression-compression mode fatigue tests. The compressive strength and elastic modulus of the foams were determined to be 167 ± 18 MPa and 12 ± 1 GPa respectively. Fatigue tests conducted with a frequency of 5 Hz and a constant stress ratio (σ_min/σ_max) of 0.1 revealed that porous Ti-6Al-4V alloys have a fatigue limit of approximately 135 MPa. Furthermore fracture surfaces of the foams were characterized by field emission scanning electron microscopy (FESEM).

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Materials Science Forum (Volumes 783-786)

Pages:

1221-1225

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.1221

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Online since:

May 2014

Authors:

Emin Erkan Aşık*, Bensu Tunca, Gül Ipek Nakaş, Şakir Bor

Keywords:

Compression, Fatigue, Porous, Space Holder Technique, Ti6Al4V

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