Cycling of Ultrafine-Grained Ti-6Al-4V ELI Alloy: Microstructural Changes and Enhanced Fatigue Limit |
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| Journal | Materials Science Forum (Volumes 584 - 586) |
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| Volume | Nanomaterials by Severe Plastic Deformation IV |
| Edited by | Yuri Estrin and Hans Jürgen Maier |
| Pages | 827-832 |
| DOI | 10.4028/www.scientific.net/MSF.584-586.827 |
| Citation | Lilia R. Saitova et al., 2008, Materials Science Forum, 584-586, 827 |
| Online since | June, 2008 |
| Authors | Lilia R. Saitova, Heinz Werner Höppel, Matthias Göken, A.R. Kilmametov, Irina P. Semenova, Ruslan Z. Valiev |
| Keywords | Cyclic Deformation, Fatigue Limit, Softening, Ti6Al4V, Ultrafine Grained Microstructure |
| Abstract | Ti-6Al-4V ELI (extra low interstitials) was processed by equal channel angular pressing in order to obtain an ultrafine-grained (UFG) microstructure which is known to enhance the fatigue behavior of metallic materials. Fatigue properties of UFG Ti-6Al-4V ELI were studied by strain and stress controlled fatigue tests. UFG Ti-6Al-4V ELI shows an improvement of the fatigue behavior compared to conventional grain (CG) size counterpart. Microstructural investigations prior to and after fatigue testing confirm a high structural stability of the UFG material. Hence, the UFG alloy has a high potential for prospective use in biomedical and engineering applications. |
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