Szczegóły publikacji
Opis bibliograficzny
Structural characterization of biomedical $Co-Cr-Mo$ components produced by direct metal laser sintering / G. Barucca, E. Santecchia, G. Majni, E. Girardin, E. Bassoli, L. Denti, A. Gatto, L. Iuliano, T. MOSKALEWICZ, P. Mengucci // Materials Science and Engineering. C, Biomimetic Materials, Sensors and Systems ; ISSN 0928-4931. — 2015 — vol. 48, s. 263–269. — Bibliogr. s. 269, Abstr. — Publikacja dostępna online od: 2014-12-05
Autorzy (10)
- Barucca G.
- Santecchia Eleonora
- Majni G.
- Girardin E.
- Bassoli Elena
- Denti L.
- Gatto Andrea
- Iuliano L.
- AGHMoskalewicz Tomasz
- Mengucci Paolo
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 95275 |
|---|---|
| Data dodania do BaDAP | 2016-02-03 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.msec.2014.12.009 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Materials Science and Engineering, C, Materials for Biological Applications |
Abstract
Direct metal laser sintering (DMLS) is a technique to manufacture complex functional mechanical parts from a computer-aided design (CAD) model. Usually, the mechanical components produced by this procedure show higher residual porosity and poorer mechanical properties than those obtained by conventional manufacturing techniques. In this work, a Co–Cr–Mo alloy produced by DMLS with a composition suitable for biomedical applications was submitted to hardness measurements and structural characterization. The alloy showed a hardness value remarkably higher than those commonly obtained for the same cast or wrought alloys. In order to clarify the origin of this unexpected result, the sample microstructure was investigated by X-ray diffraction (XRD), electron microscopy (SEM and TEM) and energy dispersive microanalysis (EDX). For the first time, a homogeneous microstructure comprised of an intricate network of thin ε (hcp)-lamellae distributed inside a γ (fcc) phase was observed. The ε-lamellae grown on the {111}γ planes limit the dislocation slip inside the γ (fcc) phase, causing the measured hardness increase. The results suggest possible innovative applications of the DMLS technique to the production of mechanical parts in the medical and dental fields.
