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  4. Materials by design : an experimental and computational investigation on the microanatomy arrangement of porous metallic glasses
 
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Materials by design : an experimental and computational investigation on the microanatomy arrangement of porous metallic glasses

Publikationstyp
Journal Article
Date Issued
2014-07-12
Sprache
English
Author(s)
Sarac, Baran  
Klusemann, Benjamin  
Xiao, Tao  
Bargmann, Swantje  
Institut
Kontinuums- und Werkstoffmechanik M-15  
TORE-URI
http://hdl.handle.net/11420/9519
Journal
Acta materialia  
Volume
77
Start Page
411
End Page
422
Citation
Acta Materialia 77: 411-422 (2014)
Publisher DOI
10.1016/j.actamat.2014.05.053
Scopus ID
2-s2.0-84903869729
Publisher
Elsevier Science
The correlation of a material's structure with its properties is one of the important unresolved issues in materials science research. This paper discusses a novel experimental and computational approach by which the influence of the pores on the mechanical properties of bulk metallic glasses (BMGs) can be systematically and quantitatively analyzed. The experimental stage involves the fabrication of a template whose pore configurations are pre-determined by computer-aided design tools, and replication of the designed patterns with BMGs. Quasi-static mechanical characterization of these complex microstructures is conducted under uniaxial tension and in-plane compression. For the numerical simulations, a non-local gradient-enhanced continuum mechanical model is established, using thermodynamic principles and periodic boundary conditions. The combination of the experimental and numerical results has identified the importance of the pore configuration, overall porosity and diameter to the spacing ratio of the pores to attain optimized material properties.
Subjects
Bulk metallic glass
Continuum mechanics
Finite element modeling
Mechanical testing
Porous material
DDC Class
500: Naturwissenschaften
530: Physik
540: Chemie
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