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Microstructure, mechanical and biological properties of zirconium alloyed with niobium after severe plastic deformation.
- Source :
-
Materialwissenschaft und Werkstoffechnik . Mar2013, Vol. 44 Issue 2/3, p198-204. 7p. - Publication Year :
- 2013
-
Abstract
- A comparative investigation of microstructure, mechanical and biological properties for zirconium alloyed with niobium in coarse-grained and ultra-fine grained states is presented. The temperature and deformation regimes of multi-stage abc-pressing resulted in ultra-fine grained states with an average size of the structural elements in the range of 0.28-0.55 μm, depending on the accumulated strain during pressing. The increase of the accumulated strain at each stage of pressing increased the uniformity of the structure. The microhardness increased by 50% with increased accumulated strain during the severe plastic deformation. Between the microhardness and the average size of the structural elements, a linear dependence was found, indicating a Hall-Petch relationship. The alloy had a good biocompatibility as shown by an MTT test with osteoblasts (MG-63 cell line). The good mechanical properties (microhardness) of zirconium alloyed with niobium in the ultra-fine grained state make it suitable for medical applications, e. g. as implant material. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09335137
- Volume :
- 44
- Issue :
- 2/3
- Database :
- Academic Search Index
- Journal :
- Materialwissenschaft und Werkstoffechnik
- Publication Type :
- Academic Journal
- Accession number :
- 86053940
- Full Text :
- https://doi.org/10.1002/mawe.201300113