Diffusion Modelling on the Microstructure Evolution in MCrAlY-Superalloy System
نویسندگان
چکیده
Elemental diffusion drives the microstructure development in MCrAlY-superalloy systems at high temperature. In this paper, two models were built to simulate behavior of elements coating or coating–substrate system. Firstly, a core–shell model was set up investigate thermodynamic and kinetic localized microstructure. The results simulation successfully explained mechanism formation α(core)–γ′(shell) structure lower temperature (750 °C) γ(core)–β(shell) higher (1100 °C). Secondly, planner used interdiffusion between MCrAlY superalloy substrate. Ni22Cr10AlY-superalloy system semiquantitatively agreed with experimental observation. Furthermore, by applying model, effect coatings on TCP phases substrate studied, GOODMAN map for designing TCP-limited can be provided.
منابع مشابه
A new dental superalloy system. 3. Microstructure and phase transformations.
A microstructural study was conducted on 15 cobalt-chromium-nickel alloys of the basic composition 40 Co-30 Ni-30 Cr. The alloys were strengthened by the addition of tantalum and tantalum-rich regions were found at the interdendritic spaces. The increase in Ta concentration caused a decrease in the concentration of the a phase and an increase in the amounts of the a phase. Excessive amounts of ...
متن کاملDependence of Creep Performance and Microstructure Evolution on Solution Cooling Rate in a Polycrystalline Superalloy
It is well known that the solution cooling rate has a great effect on the creep life of superalloys. In this research, three typical cooling rates were applied to generate different distributions of γ’ precipitates for creep tests. Ingots used to make specimens were manufactured by hot extrusion, and the master alloy had the composition of an FGH4096 power metallurgy superalloy. SEM and SESD we...
متن کاملModelling the Evolution of Microstructure in Steel Weld Metal
Physical models for the development of microstructure have the potential of revealing new phenomena and properties. They can also help identify the controlling variables. The ability to model weld metal microstructure relies on a deep understanding of the phase transformation theory governing the changes which occur as the weld solidifies and cools to ambient temperature. Considerable progress ...
متن کاملthe impact of e-readiness on ec success in public sector in iran the impact of e-readiness on ec success in public sector in iran
acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...
the effect of heat treatment on the microstructure of cast ni-based in100 superalloy
the purpose of this study was to investigate the effect of heat treatment including solution treatment and aging on the microstructure of cast nickel-based in100 superalloy including size, volume fraction and morphology of primary γ' and different kinds of carbides. for this purpose, different solution heat treatment cycles and a constant aging cycle were implemented on cast ingot samples and t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Thermal Spray Technology
سال: 2021
ISSN: ['1059-9630', '1544-1016']
DOI: https://doi.org/10.1007/s11666-020-01151-1