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Fatigue Properties and Biocompatibility of Ti-6A1-4V Alloy after EDM Process for Improved Osteointegration-Comprehensive Research Report
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SYSNO ASEP 0487380 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title Fatigue Properties and Biocompatibility of Ti-6A1-4V Alloy after EDM Process for Improved Osteointegration-Comprehensive Research Report Author(s) Stráský, J. (CZ)
Janeček, M. (CZ)
Bačáková, Lucie (FGU-C) RID, ORCID
Vrátná, J. (CZ)
Harcuba, P. (CZ)
Wagner, L. (DE)Source Title TI-2011: PROCEEDINGS OF THE 12TH WORLD CONFERENCE ON TITANIUM, 3. - Beijing : SCIENCE PRESS BEIJING, 2012 - ISBN 978-7-03-033894-5 Pages s. 2172-2175 Number of pages 4 s. Publication form Print - P Action WORLD CONFERENCE ON TITANIUM /12./ Event date 19.06.2011 - 24.06.2011 VEvent location Beijing Country CN - China Event type WRD Language eng - English Country CN - China Keywords Ti-6A1-4V ; electric discharge machining (EDM) ; scanning electron microscopy ; cell growth Subject RIV EI - Biotechnology ; Bionics R&D Projects TA01011141 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support FGU-C - RVO:67985823 UT WOS 000398128800109 Annotation Electric discharge machining (EDM) with relatively high peak currents was performed on Ti-6A1-4V alloy. Several experimental inverstigations have been undertaken in order to assess whether EDM process is viable surface treatment technique for application in orthopaedics. The surface roughness, chemical alterations of surface and osteointegration in vitro have been studied. EDM process created carbon enriched surface layer and sufficient surface roughness for improved osteointegration. Tensile properties are not substantially varied by EDM, however EDM has detrimental effect on fatigue endurance. Poor fatigue performance of material after EDM process irrespective of its original microstructure can be attributed to surface microcracks, brittle oxidized surface recast layer, internal tensile stresses and notch sensitivity of titanium alloys. These detrimental effects can be partly avoided by subsequent heat treatments. Microstructural changes of surface and subsurface layers have been observed by means of scanning electron microscopy. Fatigue performance is found to be the main limit for potential application of EDM process in orthopedics. Workplace Institute of Physiology Contact Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Year of Publishing 2018
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