Kinetic pathways of phase transformations in two-phase Ti alloys

Tae Wook Heo; Donald S. Shih; Long Qing Chen

doi:10.1007/s11661-014-2269-2

Kinetic pathways of phase transformations in two-phase Ti alloys

Tae Wook Heo, Donald S. Shih, Long Qing Chen

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

21 Scopus citations

Abstract

Possible phase transformation kinetic pathways from the high temperature β phase to the low temperature (α + β) two-phase Ti alloys were analyzed using the graphical thermodynamic method and the assumption that diffusionless and displacive transformations take place much faster than phase separation which requires long-range diffusion. It is shown that depending on the composition of a β-stabilizing element, many transformation mechanisms are possible, involving competing continuous and discontinuous displacive/diffusional transformations. We discuss the proposed phase transformation sequences employing existing experimental microstructures.

Original language	English (US)
Pages (from-to)	3438-3445
Number of pages	8
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	45
Issue number	8
DOIs	https://doi.org/10.1007/s11661-014-2269-2
State	Published - Jul 2014

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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10.1007/s11661-014-2269-2

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title = "Kinetic pathways of phase transformations in two-phase Ti alloys",

abstract = "Possible phase transformation kinetic pathways from the high temperature β phase to the low temperature (α + β) two-phase Ti alloys were analyzed using the graphical thermodynamic method and the assumption that diffusionless and displacive transformations take place much faster than phase separation which requires long-range diffusion. It is shown that depending on the composition of a β-stabilizing element, many transformation mechanisms are possible, involving competing continuous and discontinuous displacive/diffusional transformations. We discuss the proposed phase transformation sequences employing existing experimental microstructures.",

author = "Heo, {Tae Wook} and Shih, {Donald S.} and Chen, {Long Qing}",

note = "Funding Information: This work is funded by the Center for Computational Materials Design (CCMD), a joint National Science Foundation (NSF) Industry/University Cooperative Research Center at Penn State (IIP-1034965) and Georgia Tech (IIP-1034968).",

year = "2014",

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doi = "10.1007/s11661-014-2269-2",

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T1 - Kinetic pathways of phase transformations in two-phase Ti alloys

AU - Heo, Tae Wook

AU - Shih, Donald S.

AU - Chen, Long Qing

N1 - Funding Information: This work is funded by the Center for Computational Materials Design (CCMD), a joint National Science Foundation (NSF) Industry/University Cooperative Research Center at Penn State (IIP-1034965) and Georgia Tech (IIP-1034968).

PY - 2014/7

Y1 - 2014/7

N2 - Possible phase transformation kinetic pathways from the high temperature β phase to the low temperature (α + β) two-phase Ti alloys were analyzed using the graphical thermodynamic method and the assumption that diffusionless and displacive transformations take place much faster than phase separation which requires long-range diffusion. It is shown that depending on the composition of a β-stabilizing element, many transformation mechanisms are possible, involving competing continuous and discontinuous displacive/diffusional transformations. We discuss the proposed phase transformation sequences employing existing experimental microstructures.

AB - Possible phase transformation kinetic pathways from the high temperature β phase to the low temperature (α + β) two-phase Ti alloys were analyzed using the graphical thermodynamic method and the assumption that diffusionless and displacive transformations take place much faster than phase separation which requires long-range diffusion. It is shown that depending on the composition of a β-stabilizing element, many transformation mechanisms are possible, involving competing continuous and discontinuous displacive/diffusional transformations. We discuss the proposed phase transformation sequences employing existing experimental microstructures.

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Kinetic pathways of phase transformations in two-phase Ti alloys

Abstract

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