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Effect of (Ti:B) atomic ratio on mechanical properties of TiB2–Fe composites “in situ” fabricated via Self-propagating High-temperature Synthesis

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Title: Effect of (Ti:B) atomic ratio on mechanical properties of TiB2–Fe composites “in situ” fabricated via Self-propagating High-temperature Synthesis
Authors: Ziemnicka-Sylwester, Marta Browse this author
Gai, Li Browse this author
Miura, Seiji Browse this author
Keywords: Titanium diboride
metal matrix composites
Self-propagating High-temperature
modulus of rupture
compressive strength
Issue Date: 15-Mar-2015
Publisher: Elsevier
Journal Title: Materials & Design
Volume: 69
Start Page: 1
End Page: 11
Publisher DOI: 10.1016/j.matdes.2014.12.036
Abstract: The TiB2-based Fe–matrix cermets with titanium addition (literarily different Ti:B ratio) were fabricated from elemental powders ‘‘in situ’’ using the Self-propagating High-temperature Synthesis method (SHS) under high pressure. The effect of Ti:B ratio on microstructure and phase composition with particular focus on matrix phase were analyzed using X-ray diffraction (XRD) and Wavelength Dispersive Spectroscopy (WDS) for composites with intended 25 vol.% and 35 vol.% of Fe. Moreover, for composites with 35 vol.% of Fe bending strength and compressive strength were investigated. The compressive strength reached maximum value in material with Ti:B atomic ratio of 0.49, which possessed the highest TiB2 content and matrix phase consisting of Fe and Fe2B. However, modulus of rupture (MOR) test indicated that composite with titanium excess (Ti:B atomic ratio of 0.525) was characterized by the highest bending strength, due to successful elimination of Fe2B intermetallics.
Type: article (author version)
URI: http://hdl.handle.net/2115/57969
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Marta Ziemnicka-Sylwester

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