Quarternary and quinary additions to directionally-solidified X-X 3Si eutectics of chromium and vanadium

J. Ang, V. A. Vorontsov, C. L. Hayward, G. Balakrishnan, H. J. Stone, C. M.F. Rae

Research output: Contribution to conferenceProceeding

1 Citation (Scopus)

Abstract

An alternative high temperature structural alloy system based on the X-X3Si eutectic compositions of chromium and vanadium is put forward. These low-density (∼6g/cm3) eutectics have a bcc solid-solution to increase alloy fracture toughness, and a A15 X3Si as the high temperature load-bearing phase. (1/2Cr,1/2V)-(1/2Cr,1/2V)3Si was used as the base alloy for further element additions, and is represented by the symbol Cyrillic capital letter E. 10at.% tantalum and aluminium were substituted for vanadium as quaternary and quinary alloy additions. Microstructure, elemental phase partitioning, compression creep and oxidation results will be discussed. Cr-Cr3Si has a tidy, fine lamellar microstructure. Vanadium coarsens and destabilises the lamellae to a limited extent. Tantalum addition causes two distinct populations of eutectic to form; one population having finer lamellae than the other. Aluminium does not coarsen or destabilise the lamellar microstructure. High temperature compression tests at 1200°C and 1300°C show that Cyrillic capital letter E is stronger than the binary alloys, and of similar strength to the quaternary and quinary alloys.

Original languageEnglish
Pages391-396
Number of pages6
DOIs
Publication statusPublished - 30 Sep 2011
Event2010 MRS Fall Meeting - Boston, MA, United States
Duration: 29 Nov 20103 Dec 2010

Conference

Conference2010 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period29/11/103/12/10

Fingerprint

Vanadium
Chromium
eutectics
Eutectics
vanadium
chromium
Tantalum
quaternary alloys
lamella
tantalum
Aluminum
microstructure
Microstructure
Bearings (structural)
aluminum
compression tests
Binary alloys
binary alloys
fracture strength
Temperature

Keywords

  • directionally-solidified X-X3Si eutectics
  • chromium
  • vanadium
  • high temperature structural alloy system
  • microstructure
  • eutectics

Cite this

Ang, J., Vorontsov, V. A., Hayward, C. L., Balakrishnan, G., Stone, H. J., & Rae, C. M. F. (2011). Quarternary and quinary additions to directionally-solidified X-X 3Si eutectics of chromium and vanadium. 391-396. 2010 MRS Fall Meeting, Boston, MA, United States. https://doi.org/10.1557/opl.2011.351
Ang, J. ; Vorontsov, V. A. ; Hayward, C. L. ; Balakrishnan, G. ; Stone, H. J. ; Rae, C. M.F. / Quarternary and quinary additions to directionally-solidified X-X 3Si eutectics of chromium and vanadium. 2010 MRS Fall Meeting, Boston, MA, United States.6 p.
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abstract = "An alternative high temperature structural alloy system based on the X-X3Si eutectic compositions of chromium and vanadium is put forward. These low-density (∼6g/cm3) eutectics have a bcc solid-solution to increase alloy fracture toughness, and a A15 X3Si as the high temperature load-bearing phase. (1/2Cr,1/2V)-(1/2Cr,1/2V)3Si was used as the base alloy for further element additions, and is represented by the symbol Cyrillic capital letter E. 10at.{\%} tantalum and aluminium were substituted for vanadium as quaternary and quinary alloy additions. Microstructure, elemental phase partitioning, compression creep and oxidation results will be discussed. Cr-Cr3Si has a tidy, fine lamellar microstructure. Vanadium coarsens and destabilises the lamellae to a limited extent. Tantalum addition causes two distinct populations of eutectic to form; one population having finer lamellae than the other. Aluminium does not coarsen or destabilise the lamellar microstructure. High temperature compression tests at 1200°C and 1300°C show that Cyrillic capital letter E is stronger than the binary alloys, and of similar strength to the quaternary and quinary alloys.",
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Ang, J, Vorontsov, VA, Hayward, CL, Balakrishnan, G, Stone, HJ & Rae, CMF 2011, 'Quarternary and quinary additions to directionally-solidified X-X 3Si eutectics of chromium and vanadium' 2010 MRS Fall Meeting, Boston, MA, United States, 29/11/10 - 3/12/10, pp. 391-396. https://doi.org/10.1557/opl.2011.351

Quarternary and quinary additions to directionally-solidified X-X 3Si eutectics of chromium and vanadium. / Ang, J.; Vorontsov, V. A.; Hayward, C. L.; Balakrishnan, G.; Stone, H. J.; Rae, C. M.F.

2011. 391-396 2010 MRS Fall Meeting, Boston, MA, United States.

Research output: Contribution to conferenceProceeding

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T1 - Quarternary and quinary additions to directionally-solidified X-X 3Si eutectics of chromium and vanadium

AU - Ang, J.

AU - Vorontsov, V. A.

AU - Hayward, C. L.

AU - Balakrishnan, G.

AU - Stone, H. J.

AU - Rae, C. M.F.

PY - 2011/9/30

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N2 - An alternative high temperature structural alloy system based on the X-X3Si eutectic compositions of chromium and vanadium is put forward. These low-density (∼6g/cm3) eutectics have a bcc solid-solution to increase alloy fracture toughness, and a A15 X3Si as the high temperature load-bearing phase. (1/2Cr,1/2V)-(1/2Cr,1/2V)3Si was used as the base alloy for further element additions, and is represented by the symbol Cyrillic capital letter E. 10at.% tantalum and aluminium were substituted for vanadium as quaternary and quinary alloy additions. Microstructure, elemental phase partitioning, compression creep and oxidation results will be discussed. Cr-Cr3Si has a tidy, fine lamellar microstructure. Vanadium coarsens and destabilises the lamellae to a limited extent. Tantalum addition causes two distinct populations of eutectic to form; one population having finer lamellae than the other. Aluminium does not coarsen or destabilise the lamellar microstructure. High temperature compression tests at 1200°C and 1300°C show that Cyrillic capital letter E is stronger than the binary alloys, and of similar strength to the quaternary and quinary alloys.

AB - An alternative high temperature structural alloy system based on the X-X3Si eutectic compositions of chromium and vanadium is put forward. These low-density (∼6g/cm3) eutectics have a bcc solid-solution to increase alloy fracture toughness, and a A15 X3Si as the high temperature load-bearing phase. (1/2Cr,1/2V)-(1/2Cr,1/2V)3Si was used as the base alloy for further element additions, and is represented by the symbol Cyrillic capital letter E. 10at.% tantalum and aluminium were substituted for vanadium as quaternary and quinary alloy additions. Microstructure, elemental phase partitioning, compression creep and oxidation results will be discussed. Cr-Cr3Si has a tidy, fine lamellar microstructure. Vanadium coarsens and destabilises the lamellae to a limited extent. Tantalum addition causes two distinct populations of eutectic to form; one population having finer lamellae than the other. Aluminium does not coarsen or destabilise the lamellar microstructure. High temperature compression tests at 1200°C and 1300°C show that Cyrillic capital letter E is stronger than the binary alloys, and of similar strength to the quaternary and quinary alloys.

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KW - vanadium

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KW - eutectics

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DO - 10.1557/opl.2011.351

M3 - Proceeding

SP - 391

EP - 396

ER -

Ang J, Vorontsov VA, Hayward CL, Balakrishnan G, Stone HJ, Rae CMF. Quarternary and quinary additions to directionally-solidified X-X 3Si eutectics of chromium and vanadium. 2011. 2010 MRS Fall Meeting, Boston, MA, United States. https://doi.org/10.1557/opl.2011.351