Mechanical properties of Ti-W alloys reinforced with TiC particles

Heeman Choe; Susan Abkowitz; Stanley M. Abkowitz; David C. Dunand

doi:10.1016/j.msea.2008.01.069

Mechanical properties of Ti-W alloys reinforced with TiC particles

Heeman Choe^*, Susan Abkowitz, Stanley M. Abkowitz, David C. Dunand

^*Corresponding author for this work

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

17 Scopus citations

Abstract

Composites consisting of a Ti-W solid-solution-strengthened matrix reinforced with TiC particles are produced by powder metallurgy. TiC additions increase strength but reduce ductility and matrix microhardness. Composites with 7.5 wt.% TiC show some tensile ductility (3-7%) but those with 15 wt.% TiC are brittle in tension. They are however strong and ductile in compression: Ti-15W/15TiC (wt.%) has a compressive yield strength exceeding 1200 MPa. This composite also shows tensile crack growth rates which are considerably faster than for pure titanium (by a factor 2) or Ti-15W (by a factor 2-6) and a fracture toughness which remains relatively high as compared to Ti-15W (21 vs. 34 MPa sqrt(m)).

Original language	English (US)
Pages (from-to)	703-710
Number of pages	8
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	485
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2008.01.069
State	Published - Jun 25 2008

Keywords

Composite
Mechanical properties
Orthopedic
Powder metallurgy
Titanium alloy
Titanium carbide

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2008.01.069

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title = "Mechanical properties of Ti-W alloys reinforced with TiC particles",

abstract = "Composites consisting of a Ti-W solid-solution-strengthened matrix reinforced with TiC particles are produced by powder metallurgy. TiC additions increase strength but reduce ductility and matrix microhardness. Composites with 7.5 wt.% TiC show some tensile ductility (3-7%) but those with 15 wt.% TiC are brittle in tension. They are however strong and ductile in compression: Ti-15W/15TiC (wt.%) has a compressive yield strength exceeding 1200 MPa. This composite also shows tensile crack growth rates which are considerably faster than for pure titanium (by a factor 2) or Ti-15W (by a factor 2-6) and a fracture toughness which remains relatively high as compared to Ti-15W (21 vs. 34 MPa sqrt(m)).",

keywords = "Composite, Mechanical properties, Orthopedic, Powder metallurgy, Titanium alloy, Titanium carbide",

author = "Heeman Choe and Susan Abkowitz and Abkowitz, {Stanley M.} and Dunand, {David C.}",

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doi = "10.1016/j.msea.2008.01.069",

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journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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T1 - Mechanical properties of Ti-W alloys reinforced with TiC particles

AU - Choe, Heeman

AU - Abkowitz, Susan

AU - Abkowitz, Stanley M.

AU - Dunand, David C.

PY - 2008/6/25

Y1 - 2008/6/25

N2 - Composites consisting of a Ti-W solid-solution-strengthened matrix reinforced with TiC particles are produced by powder metallurgy. TiC additions increase strength but reduce ductility and matrix microhardness. Composites with 7.5 wt.% TiC show some tensile ductility (3-7%) but those with 15 wt.% TiC are brittle in tension. They are however strong and ductile in compression: Ti-15W/15TiC (wt.%) has a compressive yield strength exceeding 1200 MPa. This composite also shows tensile crack growth rates which are considerably faster than for pure titanium (by a factor 2) or Ti-15W (by a factor 2-6) and a fracture toughness which remains relatively high as compared to Ti-15W (21 vs. 34 MPa sqrt(m)).

AB - Composites consisting of a Ti-W solid-solution-strengthened matrix reinforced with TiC particles are produced by powder metallurgy. TiC additions increase strength but reduce ductility and matrix microhardness. Composites with 7.5 wt.% TiC show some tensile ductility (3-7%) but those with 15 wt.% TiC are brittle in tension. They are however strong and ductile in compression: Ti-15W/15TiC (wt.%) has a compressive yield strength exceeding 1200 MPa. This composite also shows tensile crack growth rates which are considerably faster than for pure titanium (by a factor 2) or Ti-15W (by a factor 2-6) and a fracture toughness which remains relatively high as compared to Ti-15W (21 vs. 34 MPa sqrt(m)).

KW - Composite

KW - Mechanical properties

KW - Orthopedic

KW - Powder metallurgy

KW - Titanium alloy

KW - Titanium carbide

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Mechanical properties of Ti-W alloys reinforced with TiC particles

Abstract

Keywords

ASJC Scopus subject areas

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