Fracture toughness of titanium foams for medical applications

Kashef, Sadaf, Asgari, Alireza, Hilditch, Tim B., Yan, Wenyi, Goel, Vijay K. and Hodgson, Peter D. 2010, Fracture toughness of titanium foams for medical applications, Materials science and eMaterials science and engineering A : structural materials : properties, microstructures and processing, vol. 527, no. 29-30, pp. 7689-7693, doi: 10.1016/j.msea.2010.08.044.

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Title Fracture toughness of titanium foams for medical applications
Author(s) Kashef, Sadaf
Asgari, Alireza
Hilditch, Tim B.ORCID iD for Hilditch, Tim B. orcid.org/0000-0003-0300-5774
Yan, Wenyi
Goel, Vijay K.
Hodgson, Peter D.
Journal name Materials science and eMaterials science and engineering A : structural materials : properties, microstructures and processing
Volume number 527
Issue number 29-30
Start page 7689
End page 7693
Total pages 5
Publisher Elsevier S.A.
Place of publication Lausanne, Switzerland
Publication date 2010-11-15
ISSN 0921-5093
1873-4936
Keyword(s) titanium
porosity
open foam
fracture toughness
mechanical properties
Summary The fracture behavior of titanium open foam is characterized and the R-curves of crack propagation from pre-cracks are measured. The crack growth has been optically observed, the measured initiation toughness, JIC, has been analyzed and the effect of material morphology on the JIC is discussed. The fracture toughness was found to be dependent on the expanding crack bridging zone at the back of the crack tip. The compact tension specimens also have some plastic collapse along the ligaments and it has shown that the titanium foam with a higher relative density is tougher. The non-uniform stressing within the plastic zone at the crack tip and the plastic collapse of cell topology behind the tip was found to be the primary cause of the R-curve behavior in low relative density titanium foams.
Language eng
DOI 10.1016/j.msea.2010.08.044
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30034388

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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