Discovery of plate-shaped athermal ω phase forming pairs with α′ martensite in a Ti-5.26 wt.% Cr Alloy

Dong Qiu; Mingxing Zhang; Patrick Kelly; Tadashi Furuhara

doi:10.1016/j.scriptamat.2013.08.020

Discovery of plate-shaped athermal ω phase forming pairs with α′ martensite in a Ti-5.26 wt.% Cr Alloy

Dong Qiu, Mingxing Zhang, Patrick Kelly, Tadashi Furuhara

IMR - Materials Design Division

University of Queensland

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

13 Citations (Scopus)

Abstract

Plate-shaped athermal ω phase (ω_P) has been observed for the first time in an as-quenched Ti-5.26 wt.% Cr alloy, forming a plate pair with α′ martensite. The orientation relationship is determined as: [_01̄1]β // [_21̄1̄0]ωp // [0 0 0 1]_α′, (2 2 2)_β // (0 0 0 1)_ωp 0.5 away from (112̄0)_α′, with the habit plane (54̄4̄)_β // (_06̄61)ωp // (34̄10)_α′. Such observations are explained well using the edge-to-edge matching model. The singular α′/ω_P interface implies that α′ martensite is likely to act as a heterogeneous nucleation site for ω_P.

Original language	English
Pages (from-to)	752-755
Number of pages	4
Journal	Scripta Materialia
Volume	69
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2013.08.020
Publication status	Published - 2013 Nov

Keywords

ω Phase
Crystallography
Edge-to-edge matching
Martensitic transformation
Titanium alloys

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10.1016/j.scriptamat.2013.08.020

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@article{191986a87c2b4c29a1204df0c8884356,

title = "Discovery of plate-shaped athermal ω phase forming pairs with α′ martensite in a Ti-5.26 wt.% Cr Alloy",

abstract = "Plate-shaped athermal ω phase (ωP) has been observed for the first time in an as-quenched Ti-5.26 wt.% Cr alloy, forming a plate pair with α′ martensite. The orientation relationship is determined as: [0{\=1}1]β // [2{\=1}{\=1}0]ωp // [0 0 0 1]α′, (2 2 2)β // (0 0 0 1)ωp 0.5 away from (11{\=2}0)α′, with the habit plane (5{\=4}{\=4})β // (0{\=6}61)ωp // (3{\=4}10)α′. Such observations are explained well using the edge-to-edge matching model. The singular α′/ωP interface implies that α′ martensite is likely to act as a heterogeneous nucleation site for ωP.",

keywords = "ω Phase, Crystallography, Edge-to-edge matching, Martensitic transformation, Titanium alloys",

author = "Dong Qiu and Mingxing Zhang and Patrick Kelly and Tadashi Furuhara",

note = "Funding Information: The authors are indebted to Prof. M. Enomoto of Tohoku University, Japan, for supplying the Ti–5.26 wt.% Cr alloy samples. The authors acknowledge the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, The University of Queensland. The financial support from the Australian Research Council is also appreciated.",

year = "2013",

month = nov,

doi = "10.1016/j.scriptamat.2013.08.020",

language = "English",

volume = "69",

pages = "752--755",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Ltd.",

number = "10",

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TY - JOUR

T1 - Discovery of plate-shaped athermal ω phase forming pairs with α′ martensite in a Ti-5.26 wt.% Cr Alloy

AU - Qiu, Dong

AU - Zhang, Mingxing

AU - Kelly, Patrick

AU - Furuhara, Tadashi

N1 - Funding Information: The authors are indebted to Prof. M. Enomoto of Tohoku University, Japan, for supplying the Ti–5.26 wt.% Cr alloy samples. The authors acknowledge the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, The University of Queensland. The financial support from the Australian Research Council is also appreciated.

PY - 2013/11

Y1 - 2013/11

N2 - Plate-shaped athermal ω phase (ωP) has been observed for the first time in an as-quenched Ti-5.26 wt.% Cr alloy, forming a plate pair with α′ martensite. The orientation relationship is determined as: [01̄1]β // [21̄1̄0]ωp // [0 0 0 1]α′, (2 2 2)β // (0 0 0 1)ωp 0.5 away from (112̄0)α′, with the habit plane (54̄4̄)β // (06̄61)ωp // (34̄10)α′. Such observations are explained well using the edge-to-edge matching model. The singular α′/ωP interface implies that α′ martensite is likely to act as a heterogeneous nucleation site for ωP.

AB - Plate-shaped athermal ω phase (ωP) has been observed for the first time in an as-quenched Ti-5.26 wt.% Cr alloy, forming a plate pair with α′ martensite. The orientation relationship is determined as: [01̄1]β // [21̄1̄0]ωp // [0 0 0 1]α′, (2 2 2)β // (0 0 0 1)ωp 0.5 away from (112̄0)α′, with the habit plane (54̄4̄)β // (06̄61)ωp // (34̄10)α′. Such observations are explained well using the edge-to-edge matching model. The singular α′/ωP interface implies that α′ martensite is likely to act as a heterogeneous nucleation site for ωP.

KW - ω Phase

KW - Crystallography

KW - Edge-to-edge matching

KW - Martensitic transformation

KW - Titanium alloys

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AN - SCOPUS:84884595383

SN - 1359-6462

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EP - 755

JO - Scripta Materialia

JF - Scripta Materialia

IS - 10

ER -

Discovery of plate-shaped athermal ω phase forming pairs with α′ martensite in a Ti-5.26 wt.% Cr Alloy

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