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Comparative Investigation of the Undercooling Capacity and Single-Crystal Castability of Some Ni-Based Superalloys

open access: yesCrystals, 2022
The undercooling capacity of a superalloy is an essential physical property to determine its single-crystal (SC) castability, because stray grains (SGs) will be formed if the geometrical undercooling established at the platform extremities exceeds the ...
Dexin Ma   +5 more
doaj   +2 more sources

Effect of bulk undercooling on microstructure transformation mechanism of rapidly solidified nickel alloys

open access: yesJournal of Materials Research and Technology, 2021
The microstructural evolution and mechanism of grain refinement during rapid solidification of Ni–Cu alloys were studied by molten glass purification and cyclic superheating.
Lei Liang, Hua Hou, Xiaolong Xu
exaly   +3 more sources

Solidification Simulation of Al-Si Alloys with Dendrite Tip Undercooling

open access: yesMetals, 2022
A novel solution approach is proposed for the numerical simulation of the solidification process of binary Al-Si hypoeutectic alloys during upward and downward solidification modes.
Hongda Wang   +2 more
doaj   +2 more sources

Study on the microstructure evolution mechanism of copper single phase alloys under deep undercooling conditions

open access: yesJournal of Materials Research and Technology, 2023
This article mainly used the deep undercooling technology to treat Cu60Ni40, Cu60Ni38Co2, and Cu60Ni35Co5 alloys to obtain different undercoolings. By using high speed cameras, the rapid solidification process was recorded to analyze the relationship ...
Yongchao Hao   +4 more
exaly   +3 more sources

Non-Equilibrium Solidification of Undercooled Metallic Melts [PDF]

open access: yesMetals, 2014
If a liquid is undercooled below its equilibrium melting temperature an excess Gibbs free energy is created. This gives access to solidification of metastable solids under non-equilibrium conditions.
Dieter M. Herlach
doaj   +6 more sources

Grain refinement driven by recrystallization after annealing nonequilibrium solidification microstructure of a deeply undercooled nickel alloy

open access: yesJournal of Materials Research and Technology, 2023
Traditional recrystallization technology is based on recrystallization annealing after artificial plastic deformation. In the present study, we found that rapid solidification through deep undercooling can induce substantial plastic deformation and ...
Xiaolong Xu   +3 more
doaj   +1 more source

Dendritic Solidification and Physical Properties of Co-4.54%Sn Alloy with Broad Mushy Zone

open access: yesMetals, 2023
The high undercooling of binary Co-4.54%Sn alloy has a significant influence on its microstructural characteristics and physical properties. Here, we report that the dendritic growth and physical properties of broad-temperature-range Co-4.54%Sn alloy ...
Weili Wang, Wenhui Li, Ao Wang
doaj   +1 more source

Distinctions of dendritic behavior influenced by constant pressure and periodic pressure [PDF]

open access: yesChina Foundry, 2021
The distinctions of dendritic morphology and sidebranching behavior when solidified under atmosphere pressure, constant pressure which is higher than atmosphere pressure (hereinafter referred to as constant pressure) and periodic pressure were ...
Shan Shang, Zhi-peng Guo, Zhi-qiang Han
doaj   +1 more source

Three-dimensional microstructure evolution of Ti–6Al–4V during multi-layer printing: a phase-field simulation

open access: yesJournal of Materials Research and Technology, 2022
Remelting and grain growth in deposited layers and the columnar-to-equiaxed transition (CET) have a significant impact on microstructural evolution during the multilayer printing process.
X.X. Yao, X. Gao, Z. Zhang
doaj   +1 more source

The Prediction of the Undercooling Degree of As-Cast Irons and Aluminum Alloys via Machine Learning

open access: yesCrystals, 2021
As-cast irons and aluminum alloys are used in various industrial fields and their phase and microstructure properties are strongly affected by the undercooling degree.
Yong Chen   +6 more
doaj   +1 more source

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