Effect of small additions of yttrium on the structure and phase composition of alloy ZhS6K
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Microalloying of ZhS6K with 0.01–0.8% Y leads to formation of yttrium oxide Y2O3, which precipitates in the form of "chains" and "placers", and of intermetallic Ni3Y localized both within grains and along their boundaries, and leads to a reduction in coalescence rate for γ'-phase particles and retardation of the process of M6C carbide formation of acicular form during aging.
Structural changes in the alloy, caused by introducing small amounts of yttrium, lead to a reduction by a factor of 1.5–2 in the short-term ductility and impact strength.
KeywordsOxide Carbide Structural Change Ductility Phase Composition
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- 1.V. I. Nikitin, et al. "Study of the corrosion of turbine blades for GT-100 units under operating conditions", Energomashinostroenie, No. 12, 12 (1978).Google Scholar
- 2.N. V. Ageev et al., "Mechanism of the effect of yttrium on the heat resistance of nickel-chromium alloys", Dokl. Akad. Nauk SSSR,221, No. 6, 1348 (1975).Google Scholar
- 3.N. S. Andrushchenko, "Mathematical treatment of data for quantiative electron probe microanalysis", in: Apparatus and Methods of X-ray Analysis, No. 17 (1975), p. 179.Google Scholar
- 4.K. Henrich, The Electron Microprobe, J. Wiley and Sons, New York (1966), p. 296.Google Scholar
- 5.E. M. Savitskii et al., "Reaction of yttrium with other metals", Metalloved. Term. Obrab. Met., No. 9, 42 (1962).Google Scholar
- 6.V. S. Sudakov, L. P. Trusov, and M. A. Filatov, "Effect of adding hafnium, yttrium, and neodymium on the structure and properties of wrought heat-resistant alloy KhN65KMVYuB", Proceedings of the Conference "Deformation and failure of thermally stable steels and alloys", MDNTP (1981), p. 85.Google Scholar