Effect of martensitic ω phase on mechanical properties of Ti100-xCox alloys with x = 5, 7 and 9

X. F. Zhang; K. B. Kim; S. Yi

doi:10.1016/j.intermet.2009.11.014

Effect of martensitic ω phase on mechanical properties of Ti_100-xCo_x alloys with x = 5, 7 and 9

X. F. Zhang, K. B. Kim, S. Yi

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7 Scopus citations

Abstract

Systematic microstructural investigations in the Ti_100-xCo_x alloys with x = 5, 7 and 9 reveal that the length-scale and distribution of martensitic ω phase can be effectively modified by the additions of small amounts Co. With increasing Co content, homogeneous distribution of nano-scale martensitic ω phase occurs in β-Ti matrix indicating improvement of structural coherency of the ω phase to the β-Ti matrix. A large plasticity of ∼34% combined with the high strength (∼2.9 GPa) of the Ti₉₁Co₉ sample can be obtained through the local shear dissipation possibly caused by the structural coherency between ω and β phases.

Original language	English
Pages (from-to)	725-729
Number of pages	5
Journal	Intermetallics
Volume	18
Issue number	4
DOIs	https://doi.org/10.1016/j.intermet.2009.11.014
State	Published - Apr 2010

Keywords

B. Alloy design
B. Mechanical properties at ambient temperature
D. Phase interfaces
D. Widmanstätten morphology
F. Electron microscopy, transmission

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10.1016/j.intermet.2009.11.014

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title = "Effect of martensitic ω phase on mechanical properties of Ti100-xCox alloys with x = 5, 7 and 9",

abstract = "Systematic microstructural investigations in the Ti100-xCox alloys with x = 5, 7 and 9 reveal that the length-scale and distribution of martensitic ω phase can be effectively modified by the additions of small amounts Co. With increasing Co content, homogeneous distribution of nano-scale martensitic ω phase occurs in β-Ti matrix indicating improvement of structural coherency of the ω phase to the β-Ti matrix. A large plasticity of ∼34% combined with the high strength (∼2.9 GPa) of the Ti91Co9 sample can be obtained through the local shear dissipation possibly caused by the structural coherency between ω and β phases.",

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author = "Zhang, {X. F.} and Kim, {K. B.} and S. Yi",

year = "2010",

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T1 - Effect of martensitic ω phase on mechanical properties of Ti100-xCox alloys with x = 5, 7 and 9

AU - Zhang, X. F.

AU - Kim, K. B.

AU - Yi, S.

PY - 2010/4

Y1 - 2010/4

N2 - Systematic microstructural investigations in the Ti100-xCox alloys with x = 5, 7 and 9 reveal that the length-scale and distribution of martensitic ω phase can be effectively modified by the additions of small amounts Co. With increasing Co content, homogeneous distribution of nano-scale martensitic ω phase occurs in β-Ti matrix indicating improvement of structural coherency of the ω phase to the β-Ti matrix. A large plasticity of ∼34% combined with the high strength (∼2.9 GPa) of the Ti91Co9 sample can be obtained through the local shear dissipation possibly caused by the structural coherency between ω and β phases.

AB - Systematic microstructural investigations in the Ti100-xCox alloys with x = 5, 7 and 9 reveal that the length-scale and distribution of martensitic ω phase can be effectively modified by the additions of small amounts Co. With increasing Co content, homogeneous distribution of nano-scale martensitic ω phase occurs in β-Ti matrix indicating improvement of structural coherency of the ω phase to the β-Ti matrix. A large plasticity of ∼34% combined with the high strength (∼2.9 GPa) of the Ti91Co9 sample can be obtained through the local shear dissipation possibly caused by the structural coherency between ω and β phases.

KW - B. Alloy design

KW - B. Mechanical properties at ambient temperature

KW - D. Phase interfaces

KW - D. Widmanstätten morphology

KW - F. Electron microscopy, transmission

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DO - 10.1016/j.intermet.2009.11.014

M3 - Article

AN - SCOPUS:77349106420

SN - 0966-9795

VL - 18

SP - 725

EP - 729

JO - Intermetallics

JF - Intermetallics

IS - 4

ER -

Effect of martensitic ω phase on mechanical properties of Ti_100-xCo_x alloys with x = 5, 7 and 9

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