Szczegóły publikacji
Opis bibliograficzny
Effects of build orientation and element partitioning on microstructure and mechanical properties of biomedical ${Ti-6Al-4V}$ alloy produced by laser sintering / P. Mengucci, A. Gatto, E. Bassoli, L. Denti, F. Fiori, E. Girardin, P. Bastianoni, B. RUTKOWSKI, A. CZYRSKA-FILEMONOWICZ, G. Barucca // Journal of the Mechanical Behavior of Biomedical Materials ; ISSN 1751-6161. — 2017 — vol. 71, s. 1–9. — Bibliogr. s. 8–9, Abstr. — Publikacja dostępna online od: 2017-02-24. — B. Rutkowski i A. Czyrska-Filemonowicz - dod. afiliacja: International Centre of Electron Microscopy for Material Science
Autorzy (10)
- Mengucci Paolo
- Gatto Andrea
- Bassoli Elena
- Denti L.
- Fiori F.
- Girardin E.
- Bastianoni P.
- AGHRutkowski Bogdan
- AGHCzyrska-Filemonowicz Aleksandra
- Barucca G.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 105306 |
|---|---|
| Data dodania do BaDAP | 2017-05-25 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jmbbm.2017.02.025 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of the Mechanical Behavior of Biomedical Materials |
Abstract
Direct Metal Laser Sintering (DMLS) technology was used to produce tensile and flexural samples based on the Ti-6Al-4V biomedical composition. Tensile samples were produced in three different orientations in order to investigate the effect of building direction on the mechanical behavior. On the other hand, flexural samples were submitted to thermal treatments to simulate the firing cycle commonly used to veneer metallic devices with ceramics in dental applications. Roughness and hardness measurements as well as tensile and flexural mechanical tests were performed to study the mechanical response of the alloy while X-ray diffraction (XRD), electron microscopy (SEM, TEM, STEM) techniques and microanalysis (EDX) were used to investigate sample microstructure. Results evidenced a difference in the mechanical response of tensile samples built in orthogonal directions. In terms of microstructure, samples not submitted to the firing cycle show a single phase acicular α’ (hcp) structure typical of metal parts subject to high cooling rates. After the firing cycle, samples show a reduction of hardness and strength due to the formation of laths of the β (bcc) phase at the boundaries of the primary formed α’ plates as well as to lattice parameters variation of the hcp phase. Element partitioning during the firing cycle gives rise to high concentration of V atoms (up to 20 wt%) at the plate boundaries where the β phase preferentially forms.
