Enhancement of athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloy due to high-speed hot deformation

Toshiyuki Akanuma; Hiroaki Matsumoto; Shigeo Sato; Akihiko Chiba; Ikuhiro Inagaki; Yoshihisa Shirai; Takashi Maeda

doi:10.1016/j.scriptamat.2012.03.011

Enhancement of athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloy due to high-speed hot deformation

Toshiyuki Akanuma, Hiroaki Matsumoto, Shigeo Sato, Akihiko Chiba, Ikuhiro Inagaki, Yoshihisa Shirai, Takashi Maeda

Materials Processing and Characterization Division

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

25 Citations (Scopus)

Abstract

This work examines the origin of the athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloys arising from high-speed hot deformation on the basis of chemical thermodynamics and the change in stored energy introduced by deformation. The value of the martensitic transformation starting temperature (M _s) is strongly affected by various microstructural factors. This work reveals that a high accumulation of dislocation density, greater than 10 ¹⁵ m ^-2, arising from high-speed deformation, resulted in an enhancement of athermal α″ martensitic transformations.

Original language	English
Pages (from-to)	21-24
Number of pages	4
Journal	Scripta Materialia
Volume	67
Issue number	1
DOIs	https://doi.org/10.1016/j.scriptamat.2012.03.011
Publication status	Published - 2012 Jul

Keywords

Dislocation density
Stored energy
Titanium alloy
α″ Martensitic transformation

ASJC Scopus subject areas

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

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10.1016/j.scriptamat.2012.03.011

Cite this

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title = "Enhancement of athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloy due to high-speed hot deformation",

abstract = "This work examines the origin of the athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloys arising from high-speed hot deformation on the basis of chemical thermodynamics and the change in stored energy introduced by deformation. The value of the martensitic transformation starting temperature (M s) is strongly affected by various microstructural factors. This work reveals that a high accumulation of dislocation density, greater than 10 15 m -2, arising from high-speed deformation, resulted in an enhancement of athermal α″ martensitic transformations.",

keywords = "Dislocation density, Stored energy, Titanium alloy, α″ Martensitic transformation",

author = "Toshiyuki Akanuma and Hiroaki Matsumoto and Shigeo Sato and Akihiko Chiba and Ikuhiro Inagaki and Yoshihisa Shirai and Takashi Maeda",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for the Encouragement of Young Scientists (B) (Grant #2276055 ), Ministry of Culture, Science and Education.",

year = "2012",

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doi = "10.1016/j.scriptamat.2012.03.011",

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T1 - Enhancement of athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloy due to high-speed hot deformation

AU - Akanuma, Toshiyuki

AU - Matsumoto, Hiroaki

AU - Sato, Shigeo

AU - Chiba, Akihiko

AU - Inagaki, Ikuhiro

AU - Shirai, Yoshihisa

AU - Maeda, Takashi

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for the Encouragement of Young Scientists (B) (Grant #2276055 ), Ministry of Culture, Science and Education.

PY - 2012/7

Y1 - 2012/7

N2 - This work examines the origin of the athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloys arising from high-speed hot deformation on the basis of chemical thermodynamics and the change in stored energy introduced by deformation. The value of the martensitic transformation starting temperature (M s) is strongly affected by various microstructural factors. This work reveals that a high accumulation of dislocation density, greater than 10 15 m -2, arising from high-speed deformation, resulted in an enhancement of athermal α″ martensitic transformations.

AB - This work examines the origin of the athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloys arising from high-speed hot deformation on the basis of chemical thermodynamics and the change in stored energy introduced by deformation. The value of the martensitic transformation starting temperature (M s) is strongly affected by various microstructural factors. This work reveals that a high accumulation of dislocation density, greater than 10 15 m -2, arising from high-speed deformation, resulted in an enhancement of athermal α″ martensitic transformations.

KW - Dislocation density

KW - Stored energy

KW - Titanium alloy

KW - α″ Martensitic transformation

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Enhancement of athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloy due to high-speed hot deformation

Abstract

Keywords

ASJC Scopus subject areas

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