The ordering behaviour of the O phase in Ti2AlNb-based alloys

Bo Wu; Jianyun Shen; Maoyou Chu; Shunli Shang; Zhu Zhang; Delin Peng; Songqing Liu

doi:10.1016/S0966-9795(02)00117-6

The ordering behaviour of the O phase in Ti₂AlNb-based alloys

Bo Wu, Jianyun Shen, Maoyou Chu, Shunli Shang, Zhu Zhang, Delin Peng, Songqing Liu

Materials Science and Engineering

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

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Abstract

Based on the investigation of Muraleedharan et al. [Intermetallics 3 (1995) 187] concerning the order-disorder transition of O phase in Ti₂AlNb-based alloy, the site occupations of the alloying elements are clarified and the ordering behaviour of the O phase in Ti-yAl-zNb (y≥25 at.%) alloys is investigated with a Bragg-Williams model. As a result, the relationship among the long-range order parameter (s), temperature (T), and the composition of the O phase (y, z) is established. In the temperature and composition range where the O phase exists, there is a continuously ordering character in the ordering behaviour of the O phase. Also the first-order transition character is very 'weak'.

Original language	English (US)
Pages (from-to)	979-984
Number of pages	6
Journal	Intermetallics
Volume	10
Issue number	10
DOIs	https://doi.org/10.1016/S0966-9795(02)00117-6
State	Published - Oct 2002

All Science Journal Classification (ASJC) codes

General Chemistry
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0966-9795(02)00117-6

Cite this

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title = "The ordering behaviour of the O phase in Ti2AlNb-based alloys",

abstract = "Based on the investigation of Muraleedharan et al. [Intermetallics 3 (1995) 187] concerning the order-disorder transition of O phase in Ti2AlNb-based alloy, the site occupations of the alloying elements are clarified and the ordering behaviour of the O phase in Ti-yAl-zNb (y≥25 at.%) alloys is investigated with a Bragg-Williams model. As a result, the relationship among the long-range order parameter (s), temperature (T), and the composition of the O phase (y, z) is established. In the temperature and composition range where the O phase exists, there is a continuously ordering character in the ordering behaviour of the O phase. Also the first-order transition character is very 'weak'.",

author = "Bo Wu and Jianyun Shen and Maoyou Chu and Shunli Shang and Zhu Zhang and Delin Peng and Songqing Liu",

note = "Funding Information: The authors acknowledge financial support from National Natural Science Foundation (50071011) and National Defense Foundation of China. The authors gratefully acknowledge all the colleagues in GRINM for their contribution to this study. ",

year = "2002",

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doi = "10.1016/S0966-9795(02)00117-6",

language = "English (US)",

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TY - JOUR

T1 - The ordering behaviour of the O phase in Ti2AlNb-based alloys

AU - Wu, Bo

AU - Shen, Jianyun

AU - Chu, Maoyou

AU - Shang, Shunli

AU - Zhang, Zhu

AU - Peng, Delin

AU - Liu, Songqing

N1 - Funding Information: The authors acknowledge financial support from National Natural Science Foundation (50071011) and National Defense Foundation of China. The authors gratefully acknowledge all the colleagues in GRINM for their contribution to this study.

PY - 2002/10

Y1 - 2002/10

N2 - Based on the investigation of Muraleedharan et al. [Intermetallics 3 (1995) 187] concerning the order-disorder transition of O phase in Ti2AlNb-based alloy, the site occupations of the alloying elements are clarified and the ordering behaviour of the O phase in Ti-yAl-zNb (y≥25 at.%) alloys is investigated with a Bragg-Williams model. As a result, the relationship among the long-range order parameter (s), temperature (T), and the composition of the O phase (y, z) is established. In the temperature and composition range where the O phase exists, there is a continuously ordering character in the ordering behaviour of the O phase. Also the first-order transition character is very 'weak'.

AB - Based on the investigation of Muraleedharan et al. [Intermetallics 3 (1995) 187] concerning the order-disorder transition of O phase in Ti2AlNb-based alloy, the site occupations of the alloying elements are clarified and the ordering behaviour of the O phase in Ti-yAl-zNb (y≥25 at.%) alloys is investigated with a Bragg-Williams model. As a result, the relationship among the long-range order parameter (s), temperature (T), and the composition of the O phase (y, z) is established. In the temperature and composition range where the O phase exists, there is a continuously ordering character in the ordering behaviour of the O phase. Also the first-order transition character is very 'weak'.

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SP - 979

EP - 984

JO - Intermetallics

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ER -

The ordering behaviour of the O phase in Ti₂AlNb-based alloys

Abstract

All Science Journal Classification (ASJC) codes

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