theory-guided materials design of multi-phase ti-nb alloys with bone-matching elastic properties

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ID: 167354
2012
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Abstract
We present a scale-bridging approach for modeling the integral elasticresponse of polycrystalline composite that is based on a multi-disciplinary combination of(i) parameter-free first-principles calculations of thermodynamic phase stability andsingle-crystal elastic stiffness; and (ii) homogenization schemes developed forpolycrystalline aggregates and composites. The modeling is used as a theory-guidedbottom-up materials design strategy and applied to Ti-Nb alloys as promising candidatesfor biomedical implant applications. The theoretical results (i) show an excellent agreementwith experimental data and (ii) reveal a decisive influence of the multi-phase character ofthe polycrystalline composites on their integral elastic properties. The study shows thatthe results based on the density functional theory calculations at the atomistic level canbe directly used for predictions at the macroscopic scale, effectively scale-jumping severalorders of magnitude without using any empirical parameters.
Reference Key
neugebauer2012materialstheory-guided Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Jörg Neugebauer;Dierk Raabe;David Holec;Benedikt Sander;Duancheng Ma;William Art Counts;Martin Friák
Journal Nature Materials
Year 2012
DOI
10.3390/ma5101853
URL
http://www.mdpi.com/1996-1944/5/10/1853
Keywords
Finite Element Method multi-scale ab initio electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general) multi-phase composites

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