Gast ::
| Hauptseite > Publikationsdatenbank > Mechanical Properties of Highly Porous NiTi Alloys |
| Hauptseite > Publikationsdatenbank > Mechanical Properties of Highly Porous NiTi Alloys |
| Journal Article | PreJuSER-15657 |
; ; ;
2011
Springer
New York, NY
This record in other databases: 
Please use a persistent id in citations: doi:10.1007/s11665-011-9854-y
Abstract: Highly porous NiTi alloys with pseudoelastic properties are attractive candidates for biomedical implants, energy absorbers, or damping elements. Recently, a new method was developed for net-shape manufacturing of such alloys combining metal injection molding with the application of suitable space-holder materials. A comprehensive study of mechanical properties was conducted on samples with a porosity of 51% and a pore size in the range of 300-500 mu m. At low deformations < 6%, fully pronounced pseudoelasticity was found. Even at higher strains, a shape recovery of maximum 6% took place, on which the onset of irreversible plastic deformation was superposed. Results of static compression tests were also used to calculate the energy-absorbing capacity. Fatigue of porous NiTi was investigated by cyclic loading up to 230,000 stress reversals. The failure mechanisms responsible for a reduction of shape recovery after an increased number of load cycles are discussed.
Keyword(s): J ; fatigue (auto) ; mechanical properties (auto) ; metal injection molding (auto) ; porous NiTi (auto) ; powder metallurgy (auto) ; space-holder technique (auto)
|
The record appears in these collections: |