Influence of the Cobalt Concentration and Chromium Alloying on the Structure of (β-NiAl + γ'-Ni3Al + γ-Ni) Ni–Al–Co Superalloys
- 作者: Povarova K.1, Drozdov A.1,2, Bazyleva O.3, Morozov A.1, Antonova A.1, Bondarenko Y.3, Bulakhtina M.1, Arginbaeva E.3, Amezhnov A.2
-
隶属关系:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Bardin Central Research Institute for Ferrous Metallurgy
- All-Russia Research Institute of Aviation Materials (VIAM)
- 期: 卷 2018, 编号 7 (2018)
- 页面: 645-650
- 栏目: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/171993
- DOI: https://doi.org/10.1134/S0036029518070091
- ID: 171993
如何引用文章
详细
The influence of cobalt (5 and 16 at %) and chromium (4.25 at %) on the structure of a (β-NiAl + γ'-Ni3Al + γ-Ni) alloy with 27 at % Al of the Ni–Al–Co system, which is chosen as the basis of alloys with given physicochemical properties, in particular, moderate density (≤7.2 g/cm3) and sufficient heat resistance at 1100–1300°C, is studied. A high stability of the high-temperature γ phase is found. It forms upon solidification according to the reaction L\( \rightleftarrows \) β + γ and is nonequilibrium at 1200 and 1300°C (below the temperatures of the transformations β + γ \( \rightleftarrows \) β + γ + γ' \( \rightleftarrows \) β + γ'). The volume fraction of the γ-Ni phase increases with the cobalt content or upon chromium addition in comparison with its fraction in the base alloy. The influence of alloying on the cobalt and chromium distribution in alloy phases is estimated. Additional alloying increases the differences in the phase compositions in cobalt and chromium.
作者简介
K. Povarova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 119334
A. Drozdov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences; Bardin Central Research Institute for Ferrous Metallurgy
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 119334; Moscow, 105005
O. Bazyleva
All-Russia Research Institute of Aviation Materials (VIAM)
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 105005
A. Morozov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 119334
A. Antonova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 119334
Yu. Bondarenko
All-Russia Research Institute of Aviation Materials (VIAM)
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 105005
M. Bulakhtina
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 119334
E. Arginbaeva
All-Russia Research Institute of Aviation Materials (VIAM)
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 105005
A. Amezhnov
Bardin Central Research Institute for Ferrous Metallurgy
Email: povarova@imet.ac.ru
俄罗斯联邦, Moscow, 105005
![](/img/style/loading.gif)