OPTIMISATION OF THE COMPOSITION AND MORPHOLOGY OF CARBIDES IN SINGLE- CRYSTAL NICKEL-BASED SUPERALLOYS

被引：0

作者：

Ol'shanetskii, Vadim ^{[1
]}

Glotka, Alexander ^{[1
]}

机构：

[1] Zaporizhzhia Polytech Natl Univ, Zaporizhzhia, Ukraine

来源：

STRUCTURAL INTEGRITY AND LIFE-INTEGRITET I VEK KONSTRUKCIJA | 2023年 / 23卷 / 02期

关键词：

nickel-based superalloy; morphology; composition of carbides; precipitation (dissolution) temperatures of carbides; THERMOSOLUTAL CONVECTIVE INSTABILITIES; NIMONIC; 263; MICROSTRUCTURE; STABILIZATION; ADDITIONS; CREEP;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, modelling of thermodynamic processes of excess phase separation is carried out using the CALPHAD method as well as the study of the morphology and distribution of chemical elements in carbides depending on the alloying on a scanning electron microscope REM-106I. It has been established that in carbides of the Ni-11.5Cr-5Co3.6Al-4.5Ti-7W-0.8Mo-0.06C system, there is a tendency to recrystallize depending on the level of alloying elements. Mathematical dependences are established of the alloying influence on the temperature of precipitation (dissolution) of carbides, and the influence of change in alloy chemical composition on the composition of carbides. The obtained dependences are confirmed experimentally using X-ray spectroscopy on nickel-based superalloys. It is recommended to use the obtained mathematical models not only in the design of new nickel-based superalloys but also in the improvement of known compositions within the stated concentrations.

引用

页码：185 / 189

页数：5

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