Alloying and the micromechanics of Co-Al-W-X quaternary alloys

Hui Yu Yan; James Coakley; Vassili A. Vorontsov; Nicholas G. Jones; Howard J. Stone; David Dye

doi:10.1016/j.msea.2014.05.044

Alloying and the micromechanics of Co-Al-W-X quaternary alloys

Hui Yu Yan, James Coakley, Vassili A. Vorontsov, Nicholas G. Jones, Howard J. Stone, David Dye

Design, Manufacturing And Engineering Management

Research output: Contribution to journal › Article

25 Citations (Scopus)

Abstract

The lattice misfit and diffraction elastic constants in hot rolled polycrystalline Co-7Al-5W-2Ta and Co-6Al-6W-2Ti (at.%) are measured using neutron and synchrotron X-ray diffraction. The misfit in the two alloys was found to be +0.67 and +0.59%, using neutron diffraction at HRPD. The misfit was found to increase with temperature, as in Ni superalloys. This implies that the amount of coherency strengthening increases with temperature. The diffraction elastic constants measured show that the γ ' phase is less stiff than the γ matrix in all orientations, which means that load shedding will occur to the γ phase.

Language	English
Pages	201-208
Number of pages	8
Journal	Materials Science and Engineering A
Volume	613
DOIs	10.1016/j.msea.2014.05.044
Publication status	Published - 8 Sep 2014

Fingerprint

quaternary alloys

micromechanics

Micromechanics

Elastic constants

Alloying

alloying

Diffraction

Neutron diffraction

elastic properties

Synchrotrons

Superalloys

diffraction

Neutrons

heat resistant alloys

X ray diffraction

Temperature

neutron diffraction

synchrotrons

neutrons

temperature

Keywords

Co-Al-W superalloys
elastic behaviour
neutron scattering
synchrotron X-ray diffraction

Cite this

Yan, H. Y., Coakley, J., Vorontsov, V. A., Jones, N. G., Stone, H. J., & Dye, D. (2014). Alloying and the micromechanics of Co-Al-W-X quaternary alloys. Materials Science and Engineering A, 613, 201-208. https://doi.org/10.1016/j.msea.2014.05.044

Yan, Hui Yu ; Coakley, James ; Vorontsov, Vassili A. ; Jones, Nicholas G. ; Stone, Howard J. ; Dye, David. / Alloying and the micromechanics of Co-Al-W-X quaternary alloys. In: Materials Science and Engineering A. 2014 ; Vol. 613. pp. 201-208.

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abstract = "The lattice misfit and diffraction elastic constants in hot rolled polycrystalline Co-7Al-5W-2Ta and Co-6Al-6W-2Ti (at.{\%}) are measured using neutron and synchrotron X-ray diffraction. The misfit in the two alloys was found to be +0.67 and +0.59{\%}, using neutron diffraction at HRPD. The misfit was found to increase with temperature, as in Ni superalloys. This implies that the amount of coherency strengthening increases with temperature. The diffraction elastic constants measured show that the γ ' phase is less stiff than the γ matrix in all orientations, which means that load shedding will occur to the γ phase.",

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Yan, HY, Coakley, J, Vorontsov, VA, Jones, NG, Stone, HJ & Dye, D 2014, 'Alloying and the micromechanics of Co-Al-W-X quaternary alloys' Materials Science and Engineering A, vol. 613, pp. 201-208. https://doi.org/10.1016/j.msea.2014.05.044

Alloying and the micromechanics of Co-Al-W-X quaternary alloys. / Yan, Hui Yu; Coakley, James; Vorontsov, Vassili A.; Jones, Nicholas G.; Stone, Howard J.; Dye, David.

In: Materials Science and Engineering A, Vol. 613, 08.09.2014, p. 201-208.

Research output: Contribution to journal › Article

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T1 - Alloying and the micromechanics of Co-Al-W-X quaternary alloys

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AU - Coakley, James

AU - Vorontsov, Vassili A.

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AU - Dye, David

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AB - The lattice misfit and diffraction elastic constants in hot rolled polycrystalline Co-7Al-5W-2Ta and Co-6Al-6W-2Ti (at.%) are measured using neutron and synchrotron X-ray diffraction. The misfit in the two alloys was found to be +0.67 and +0.59%, using neutron diffraction at HRPD. The misfit was found to increase with temperature, as in Ni superalloys. This implies that the amount of coherency strengthening increases with temperature. The diffraction elastic constants measured show that the γ ' phase is less stiff than the γ matrix in all orientations, which means that load shedding will occur to the γ phase.

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