Strengthening mechanism of titanium boride whisker-reinforced Ti-6Al-4V alloy matrix composites with the TiB orientation perpendicular to the loading direction

Hiroki Kurita; Shiori Suzuki; Shoichi Kikuchi; Noriharu Yodoshi; Sophie Gourdet; Fumio Narita

doi:10.3390/ma12152401

Strengthening mechanism of titanium boride whisker-reinforced Ti-6Al-4V alloy matrix composites with the TiB orientation perpendicular to the loading direction

Hiroki Kurita, Shiori Suzuki, Shoichi Kikuchi, Noriharu Yodoshi, Sophie Gourdet, Fumio Narita

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We fabricated fully dense titanium boride (TiB) whisker-reinforced Ti-6Al-4V alloy matrix (Ti6Al4V-TiB) composites, with a homogeneous dispersion, a TiB orientation perpendicular to the loading direction (; two-dimensional random direction) and an intimate Ti/TiB interface without an intermediate interfacial layer in the Ti-6Al-4V alloy matrix, by spark plasma sintering. Microstructural analysis allows us to present the tensile properties of the Ti6Al4V-TiB composites with the theories for discontinuous fiber-reinforced composites. The Ti6Al4V-TiB 10 vol.% composite yielded a Young's modulus of 130 GPa, an ultimate tensile strength (UTS) of 1193 MPa and an elongation of 2.8%. The obtained experimental Young's modulus and UTS of the Ti6Al4V-TiB composites were consistent with the theoretical values estimated by the Halpin-Tsai and Shear-lag models. The good agreement between our experimental results and these models indicates that the TiB whiskers behave as discontinuous fibers in the Ti-6Al-4V alloy matrix.

Original language	English
Article number	2401
Journal	Materials
Volume	12
Issue number	15
DOIs	https://doi.org/10.3390/ma12152401
Publication status	Published - 2019 Aug 1

Keywords

Strengthening mechanism
Tensile property
Titanium matrix composite
Whisker

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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10.3390/ma12152401

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Strengthening mechanism of titanium boride whisker-reinforced Ti-6Al-4V alloy matrix composites with the TiB orientation perpendicular to the loading direction. / Kurita, Hiroki; Suzuki, Shiori; Kikuchi, Shoichi; Yodoshi, Noriharu; Gourdet, Sophie; Narita, Fumio.

In: Materials, Vol. 12, No. 15, 2401, 01.08.2019.

Research output: Contribution to journal › Article › peer-review

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title = "Strengthening mechanism of titanium boride whisker-reinforced Ti-6Al-4V alloy matrix composites with the TiB orientation perpendicular to the loading direction",

abstract = "We fabricated fully dense titanium boride (TiB) whisker-reinforced Ti-6Al-4V alloy matrix (Ti6Al4V-TiB) composites, with a homogeneous dispersion, a TiB orientation perpendicular to the loading direction (; two-dimensional random direction) and an intimate Ti/TiB interface without an intermediate interfacial layer in the Ti-6Al-4V alloy matrix, by spark plasma sintering. Microstructural analysis allows us to present the tensile properties of the Ti6Al4V-TiB composites with the theories for discontinuous fiber-reinforced composites. The Ti6Al4V-TiB 10 vol.% composite yielded a Young's modulus of 130 GPa, an ultimate tensile strength (UTS) of 1193 MPa and an elongation of 2.8%. The obtained experimental Young's modulus and UTS of the Ti6Al4V-TiB composites were consistent with the theoretical values estimated by the Halpin-Tsai and Shear-lag models. The good agreement between our experimental results and these models indicates that the TiB whiskers behave as discontinuous fibers in the Ti-6Al-4V alloy matrix.",

keywords = "Strengthening mechanism, Tensile property, Titanium matrix composite, Whisker",

author = "Hiroki Kurita and Shiori Suzuki and Shoichi Kikuchi and Noriharu Yodoshi and Sophie Gourdet and Fumio Narita",

note = "Funding Information: Funding: This work was performed under the inter-university cooperative research program (Proposal No. 19G0204) of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, and also supported by the research grant from Casio Science Promotion Foundation. Funding Information: This work was performed under the inter-university cooperative research program (Proposal No. 19G0204) of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, and also supported by the research grant from Casio Science Promotion Foundation. We express our appreciation to Koichi Harata, from Tohoku University, for support and allowing us to work on the fabrication of specimens by SPS. Publisher Copyright: {\textcopyright} 2019 by the authors.",

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AU - Suzuki, Shiori

AU - Kikuchi, Shoichi

AU - Yodoshi, Noriharu

AU - Gourdet, Sophie

AU - Narita, Fumio

N1 - Funding Information: Funding: This work was performed under the inter-university cooperative research program (Proposal No. 19G0204) of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, and also supported by the research grant from Casio Science Promotion Foundation. Funding Information: This work was performed under the inter-university cooperative research program (Proposal No. 19G0204) of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, and also supported by the research grant from Casio Science Promotion Foundation. We express our appreciation to Koichi Harata, from Tohoku University, for support and allowing us to work on the fabrication of specimens by SPS. Publisher Copyright: © 2019 by the authors.

PY - 2019/8/1

Y1 - 2019/8/1

N2 - We fabricated fully dense titanium boride (TiB) whisker-reinforced Ti-6Al-4V alloy matrix (Ti6Al4V-TiB) composites, with a homogeneous dispersion, a TiB orientation perpendicular to the loading direction (; two-dimensional random direction) and an intimate Ti/TiB interface without an intermediate interfacial layer in the Ti-6Al-4V alloy matrix, by spark plasma sintering. Microstructural analysis allows us to present the tensile properties of the Ti6Al4V-TiB composites with the theories for discontinuous fiber-reinforced composites. The Ti6Al4V-TiB 10 vol.% composite yielded a Young's modulus of 130 GPa, an ultimate tensile strength (UTS) of 1193 MPa and an elongation of 2.8%. The obtained experimental Young's modulus and UTS of the Ti6Al4V-TiB composites were consistent with the theoretical values estimated by the Halpin-Tsai and Shear-lag models. The good agreement between our experimental results and these models indicates that the TiB whiskers behave as discontinuous fibers in the Ti-6Al-4V alloy matrix.

AB - We fabricated fully dense titanium boride (TiB) whisker-reinforced Ti-6Al-4V alloy matrix (Ti6Al4V-TiB) composites, with a homogeneous dispersion, a TiB orientation perpendicular to the loading direction (; two-dimensional random direction) and an intimate Ti/TiB interface without an intermediate interfacial layer in the Ti-6Al-4V alloy matrix, by spark plasma sintering. Microstructural analysis allows us to present the tensile properties of the Ti6Al4V-TiB composites with the theories for discontinuous fiber-reinforced composites. The Ti6Al4V-TiB 10 vol.% composite yielded a Young's modulus of 130 GPa, an ultimate tensile strength (UTS) of 1193 MPa and an elongation of 2.8%. The obtained experimental Young's modulus and UTS of the Ti6Al4V-TiB composites were consistent with the theoretical values estimated by the Halpin-Tsai and Shear-lag models. The good agreement between our experimental results and these models indicates that the TiB whiskers behave as discontinuous fibers in the Ti-6Al-4V alloy matrix.

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Strengthening mechanism of titanium boride whisker-reinforced Ti-6Al-4V alloy matrix composites with the TiB orientation perpendicular to the loading direction

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