Structural heat-resistant β-NiAl + γ′-Ni3Al alloys of the Ni–Al–Co system: I. Solidification and structure
- 作者: Povarova K.1, Drozdov A.1, Bazyleva O.2, Morozov A.1, Antonova A.1, Bondarenko Y.2, Bulakhtina M.1, Ashmarin A.1, Arginbaeva E.2, Alad’ev N.1
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隶属关系:
- Baikov Institute of Metallurgy and Materials Science
- VIAM—All-Russia Institute of Aviation Materials
- 期: 卷 2017, 编号 9 (2017)
- 页面: 696-705
- 栏目: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/171681
- DOI: https://doi.org/10.1134/S0036029517090117
- ID: 171681
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详细
When analyzing the ternary Ni–Al–M phase diagrams, where M is a group VI–VIII transition metal, we chose the Ni–Al–Co system, where the γ′ and γ phases are in equilibrium with the β phase, as a base for designing alloys with the following physicochemical properties: a moderate density (≤7.2 g/cm3) and satisfactory heat resistance at temperatures up to 1300°C. The structure formation in heterophase β + γ′ alloys during directional solidification is studied. It is found that, in contrast to cobalt-free β + γ′ alloys (where the γ′-Ni3Al aluminide forms according to the peritectic reaction L + β ⇄ γ′), the alloys with 8–10 at % Co studied in this work during directional solidification at 1370°C contain the degenerate eutectic L ⇄ β + γ. The transition from the β + γ field to the β + γ′ + γ field occurs in the temperature range 1323–1334°C, and the γ′ phase then forms according to the reaction β + γ ⇄ γ′.
作者简介
K. Povarova
Baikov Institute of Metallurgy and Materials Science
编辑信件的主要联系方式.
Email: povarova@imet.ac.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991
A. Drozdov
Baikov Institute of Metallurgy and Materials Science
Email: povarova@imet.ac.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991
O. Bazyleva
VIAM—All-Russia Institute of Aviation Materials
Email: povarova@imet.ac.ru
俄罗斯联邦, ul. Radio 17, Moscow, 103767
A. Morozov
Baikov Institute of Metallurgy and Materials Science
Email: povarova@imet.ac.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991
A. Antonova
Baikov Institute of Metallurgy and Materials Science
Email: povarova@imet.ac.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991
Yu. Bondarenko
VIAM—All-Russia Institute of Aviation Materials
Email: povarova@imet.ac.ru
俄罗斯联邦, ul. Radio 17, Moscow, 103767
M. Bulakhtina
Baikov Institute of Metallurgy and Materials Science
Email: povarova@imet.ac.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991
A. Ashmarin
Baikov Institute of Metallurgy and Materials Science
Email: povarova@imet.ac.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991
E. Arginbaeva
VIAM—All-Russia Institute of Aviation Materials
Email: povarova@imet.ac.ru
俄罗斯联邦, ul. Radio 17, Moscow, 103767
N. Alad’ev
Baikov Institute of Metallurgy and Materials Science
Email: povarova@imet.ac.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991
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