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Articles by Junyi Cheng
Influence of Hot Deformation Temperature on Grain Size and γ’ Phase in U720Li Alloy After Sub-Solvus Heat Treatment
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
The Effect of Thermal Processing on the Microstructure and Properties of a Novel Nickel-Based Powder Metallurgy Superalloy
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Quantitative Microstructure Prediction of Powder High-Temperature Alloy during Solution Heat Treatment and Its Validation
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
The Integration of ANN and FEA and Its Application to Property Prediction of Dual-Performance Turbine Disks
1. Introduction Nickel-based superalloys exhibit exceptional high-temperature strength, fatigue performance, and creep resistance, making them indispensable for critical high-temperature components in aeroengines, such as turbine disks and blades [1,2]. Advanced powder turbine disks are typically formed through Hot Isostatic Pressing (HIP), Heat Extrusion (HEX), and Isothermal Forging (IF), followed by heat treatment to tailor the microstructure [3].
An Improved Grain Growth Model and Its Application in Gradient Heat Treatment of Aero-Engine Turbine Discs
3. Experimental Materials and Methods In order to obtain the needed parameters of the equation, extensive isothermal grain growth experiments were designed and performed. The alloy used in the experiment is the third-generation nickel-based powder superalloy, FGH4113A. Table 1 gives the nominal composition. The main process route of the alloy is: vacuum induction melting (VIM) + argon atomization (AA) + hot isostatic pressing (HIP) + hot extrusion (HEX) + isothermal forging (IF).
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