scholarly journals Review of γ’ Rafting Behavior in Nickel-Based Superalloys: Crystal Plasticity and Phase-Field Simulation

Crystals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1095
Author(s):  
Zhiyuan Yu ◽  
Xinmei Wang ◽  
Fuqian Yang ◽  
Zhufeng Yue ◽  
James C. M. Li
Keyword(s):  
Single Crystal ◽  
Crystal Plasticity ◽  
Microstructure Evolution ◽  
Phase Field ◽  
Field Method ◽  
Plasticity Theory ◽  
Phase Field Method ◽  
Field Simulation ◽  
Crystal Plasticity Theory ◽  
Excellent Tool

Rafting is an important phenomenon of the microstructure evolution in nickel-based single crystal superalloys at elevated temperature. Understanding the rafting mechanism and its effect on the microstructure evolution is of great importance in determining the structural stability and applications of the single crystal superalloys. Phase-field method, which is an excellent tool to analyze the microstructure evolution at mesoscale, has been gradually used to investigate the rafting behavior. In this work, we review the crystal plasticity theory and phase-field method and discuss the application of the crystal plasticity theory and phase-field method in the analysis of the creep deformation and microstructure evolution of the single crystal superalloys.

scholarly journals Simulation of the External Pressure Influence on the Micro-Structural Evolution of a Single Crystal Ni-Based Superalloy

2011 ◽  
Vol 278 ◽  
pp. 247-252
Author(s):  
Inmaculada Lopez-Galilea ◽  
Stephan Huth ◽  
Suzana Gomes Fries ◽  
Ingo Steinbach ◽  
Werner Theisen
Keyword(s):  
Single Crystal ◽  
Microstructural Evolution ◽  
Phase Field ◽  
Structural Evolution ◽  
Field Method ◽  
External Pressure ◽  
Experimental Results ◽  
Alloying Elements ◽  
Phase Field Method

The phase field method has been applied to simulate the microstructural evolution of a commercial single crystal Ni-based superalloy during both, HIP and annealing treatments. The effects of applying high isostatic pressure on the microstructural evolution, which mainly retards the diffusion of the alloying elements causing the loss of the orientational coherency between the phases is demonstrated by the simulation and experimental results

Coupled Analysis of Microstructure Evolution with Creep Deformation in Nickel-Based Superalloys by the Phase Field Method

2012 ◽  
pp. 111-119
Author(s):  
Yuhki Tsukada ◽  
Yoshinori Murata ◽  
Toshiyuki Koyama ◽  
Nobuhiro Miura ◽  
Yoshihiro Kondo
Keyword(s):  
Microstructure Evolution ◽  
Creep Deformation ◽  
Phase Field ◽  
Field Method ◽  
Phase Field Method ◽  
Coupled Analysis

Phase Field Simulation of the Pure Material Dendrite Growth in a Forced Flow

2012 ◽  
Vol 571 ◽  
pp. 3-7
Author(s):  
Jing Liu ◽  
Ying Shuo Wang
Keyword(s):  
Phase Field ◽  
Vertical Direction ◽  
Field Method ◽  
Dendritic Morphology ◽  
Forced Flow ◽  
Phase Field Method ◽  
Pure Material ◽  
Phase Field Models ◽  
Field Simulation ◽  
Control Equation

The phase field method is effective in simulating the formation of solidification microstructure. Based on the phase field models of coupling flow field and noise field proposed by Tong and Beckermann, using finite difference method to solve control equation, apartly simulating the dendritic morphology under the condition of convection or none convection, and drawing the following conclusions after comparing the results: in the side, the dendrite will no longer be symmetrical under the condition of countercurrent and downstream, the dendrite tip grows faster with countercurrent than that of the latter, while the dendrite grows almost naturally in the vertical direction of convection.

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