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

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)979-984
Number of pages6
JournalIntermetallics
Volume10
Issue number10
DOIs
StatePublished - Oct 1 2002

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Order disorder transitions
Sorbitol
Alloying elements
Chemical analysis
Intermetallics
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Wu, Bo ; Shen, Jianyun ; Chu, Maoyou ; Shang, Shunli ; Zhang, Zhu ; Peng, Delin ; Liu, Songqing. / The ordering behaviour of the O phase in Ti2AlNb-based alloys. In: Intermetallics. 2002 ; Vol. 10, No. 10. pp. 979-984.
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Wu, B, Shen, J, Chu, M, Shang, S, Zhang, Z, Peng, D & Liu, S 2002, 'The ordering behaviour of the O phase in Ti2AlNb-based alloys', Intermetallics, vol. 10, no. 10, pp. 979-984. https://doi.org/10.1016/S0966-9795(02)00117-6

The ordering behaviour of the O phase in Ti2AlNb-based alloys. / Wu, Bo; Shen, Jianyun; Chu, Maoyou; Shang, Shunli; Zhang, Zhu; Peng, Delin; Liu, Songqing.

In: Intermetallics, Vol. 10, No. 10, 01.10.2002, p. 979-984.

Research output: Contribution to journalArticle

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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

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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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