Compression-compression fatigue of selective electron beam melted cellular titanium (Ti-6Al-4V)

Hrabe NW, Heinl P, Flinn B, Körner C, Bordia RK (2011)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Journal of Biomedical Materials Research Part B-Applied Biomaterials Wiley-Blackwell

Pages Range: 313-320

Journal Issue: 2

DOI: 10.1002/jbm.b.31901

Abstract

Regular 3D periodic porous Ti-6Al-4V structures intended to reduce the effects of stress shielding in load-bearing bone replacement implants (e.g., hip stems) were fabricated over a range of relative densities (0.17-0.40) and pore sizes (∼500-1500 μm) using selective electron beam melting (EBM). Compression-compression fatigue testing (15 Hz, R = 0.1) resulted in normalized fatigue strengths at 10 cycles ranging from 0.15 to 0.25, which is lower than the expected value of 0.4 for solid material of the same acicular α microstructure. The three possible reasons for this reduced fatigue lifetime are stress concentrations from closed porosity observed within struts, stress concentrations from observed strut surface features (sintered particles and texture lines), and microstructure (either acicular α or martensite) with less than optimal high-cycle fatigue resistance. Copyright © 2011 Wiley Periodicals, Inc.

Authors with CRIS profile

Peter Heinl Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Related research project(s)

Activity SEBM of special alloys Jan. 1, 2000 - Jan. 1, 2003 Activity Development of process strategies Jan. 1, 2000 - Jan. 1, 2003

Involved external institutions

University of Washington US United States (USA) (US)

How to cite

APA:

Hrabe, N.W., Heinl, P., Flinn, B., Körner, C., & Bordia, R.K. (2011). Compression-compression fatigue of selective electron beam melted cellular titanium (Ti-6Al-4V). Journal of Biomedical Materials Research Part B-Applied Biomaterials, 2, 313-320. https://dx.doi.org/10.1002/jbm.b.31901

MLA:

Hrabe, Nikolas W., et al. "Compression-compression fatigue of selective electron beam melted cellular titanium (Ti-6Al-4V)." Journal of Biomedical Materials Research Part B-Applied Biomaterials 2 (2011): 313-320.

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