Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4351
Title: Compression testing of a sintered Ti6Al4V powder compact for biomedical applications
Authors: Güden, Mustafa
Çelik, Emrah
Akar, Egemen
Çetiner, Sinan
Güden, Mustafa
Çelik, Emrah
Akar, Egemen
Keywords: Powder processing
Sintering
Ti alloy
Compression test
Strain rate
Issue Date: 2005
Publisher: Elsevier Ltd.
Source: Güden, M., Çelik, E., Akar, E. & Çetiner, S. (2005). Compression testing of a sintered Ti6Al4V powder compact for biomedical applications. Materials Characterization, 54 (4-5), 399-408. http://doi.org/10.1016/j.matchar.2005.01.006
Abstract: In this study, the compression deformation behavior of a Ti6Al4V powder compact, prepared by the sintering of cold compacted atomized spherical particles (100–200 Am) and containing 36–38% porosity, was investigated at quasi-static (1.6 10 3–1.6 10 1 s 1) and high strain rates (300 and 900 s 1) using, respectively, conventional mechanical testing and Split Hopkinson Pressure Bar techniques. Microscopic studies of as-received powder and sintered powder compact showed that sintering at high temperature (1200 8C) and subsequent slow rate of cooling in the furnace changed the microstructure of powder from the acicular alpha (a) to the Widmanst7tten (a+h) microstructure. In compression testing, at both quasi-static and high strain rates, the compact failed via shear bands formed along the diagonal axis, 458 to the loading direction. Increasing the strain rate was found to increase both the flow stress and compressive strength of the compact but it did not affect the critical strain for shear localization. Microscopic analyses of failed samples and deformed but not failed samples of the compact further showed that fracture occurred in a ductile (dimpled) mode consisting of void initiation and growth in a phase and/or at the a/h interface and macrocracking by void coalescence in the interparticle bond region.
URI: http://hdl.handle.net/11147/4351
https://doi.org/10.1016/j.matchar.2005.01.006
ISSN: 1044-5803
1044-5803
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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