Abstract
Low-temperature portion of the polythermal section for the Co–Al–W system in the vicinity of the Co3(Al, W) intermetallic composition has been studied experimentally using electron microscopy and hightemperature X-ray diffraction analysis. Low-temperature structural phase transformations and temperature ranges of the existence of phases have been determined. The morphology of Co3(Al, W) intermetallic particles was studied as a function of the tungsten content in alloys.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. Sato, T. Omori, K. Oikawa, I. Ohnuma, R. Kainuma, and K. Ishida, “Cobalt-based high-temperature alloys,” Science, 312 (5770), 90–91 (2006).
G. Dmitrieva, V. Vasilenko, and I. Melnik, “Al–Co–W fusion diagram in the Co–CoAl–W part,” Chem. Met. Alloys 1, 338–342 (2008).
N. V. Kazantseva, S. L. Demakov, M. A. Ryzhkov, N.N. Stepanova, M. B. Rigmant, D. Shishkin, D. I. Davydov, and E. P. Romanov, “Study of magnetic properties and structural and phase transformations in the Co–19 at % Al–6 at % W alloy,” Phys. Met. Metallogr. 116, 531–537 (2015).
K. Ishida, “Recent progress on Co-based alloys–Phase diagram and application,” Arch. Metall. Mater. 53, 1075–1088 (2008).
A. Suzuki and T. M. Pollock, “High-temperature strength and deformation of γ/γ' two-phase Co–Al–Wbased alloys,” Acta Mater. 56, 1288–1297 (2008).
P. J. Bocchini, E. A. Lass, Kil-Won Moon, M. E. Williams, C. E. Campbell, U. R. Kattner, D. C. Dunand, and D. N. Seidman, “Atom-probe tomographic study of γ/γ' interfaces and compositions in an aged Co–Al–W superalloy,” Scr. Mater. 68, 563–566 (2013).
A. Bauer, S. Neumeier, F. Pyczak, and M. GoËken, “Microstructure and creep strength of different γ/γ'strengthened Co-based superalloy variants,” Scr. Mater. 63, 1197–1200 (2010).
S. Miura, K. Ohkubo, and T. Mohri, “Mechanical properties of Co-based L12 intermetallic compound Co3(Al, W),” Mater. Trans. 48, 2403–2408 (2007).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © N.V. Kazantseva, S.L. Demakov, A.S. Yurovskikh, N.N. Stepanova, N.I. Vinogradova, D.I. Davydov, S.V. Lepikhin, 2016, published in Fizika Metallov i Metallovedenie, 2016, Vol. 117, No. 7, pp. 723–731.
Rights and permissions
About this article
Cite this article
Kazantseva, N.V., Demakov, S.L., Yurovskikh, A.S. et al. Phase diagram of the Co–Al–W system. structure and phase transformations near the Co3(Al, W) intermetallic composition range. Phys. Metals Metallogr. 117, 701–709 (2016). https://doi.org/10.1134/S0031918X16070073
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0031918X16070073