scholarly journals Application of Phase-Field Method to the Analysis of Phase Decomposition of Alloys

10.5772/64153 ◽  
2016 ◽  
Author(s):  
Erika O. Avila-Davila ◽  
Victor M. Lopez-Hirata ◽  
Maribel L. Saucedo-Muñoz
Keyword(s):  
Phase Field ◽  
Field Method ◽  
Phase Field Method ◽  
Phase Decomposition

Computer Investigations on Phase Decomposition in Real Alloy Systems Based on a Discrete Type Phase Field Method

1997 ◽  
Vol 481 ◽  
Author(s):  
Toni Miyazaki ◽  
Toshiyuki Koyama ◽  
Takao Kozakai
Keyword(s):  
Phase Field ◽  
Alloy System ◽  
Field Method ◽  
Phase Field Method ◽  
Phase Decomposition ◽  
Microstructure Formation ◽  
Interchange Energy ◽  
Discrete Phase ◽  
The Difference ◽  
Difference Expression

ABSTRACTOn the basis of the discrete phase field method where the difference expression of non-linear kinetic equation, the composition dependencies of the atomic interchange energy and the inhomogeneous elasticity are taken into consideration so as to be applicable for the real alloy system. The phase decomposition and the microstructure formation are computer simulated for the Fe-Al- Co ternary ordering alloy by utilizing the thermodynamic data.

Theoretical phase-field-method-based model of the γ phase dissolution of base metals in duplex stainless steels

2021 ◽  
Vol 26 ◽  
pp. 102150
Author(s):  
Dong-Cho Kim ◽  
Tomo Ogura ◽  
Ryosuke Hamada ◽  
Shotaro Yamashita ◽  
Kazuyoshi Saida
Keyword(s):  
Phase Field ◽  
Stainless Steels ◽  
Field Method ◽  
Duplex Stainless Steels ◽  
Phase Field Method ◽  
Base Metals ◽  
Phase Dissolution

scholarly journals Viscoelastic phase-field fracture using the framework of representative crack elements

2021 ◽  
Author(s):  
Bo Yin ◽  
Johannes Storm ◽  
Michael Kaliske
Keyword(s):  
Phase Field ◽  
Consistency Condition ◽  
Field Method ◽  
Anisotropic Elasticity ◽  
Phase Field Method ◽  
Internal Variables ◽  
Crack Model ◽  
Material Degradation ◽  
Discrete Crack ◽  
Deformation State

AbstractThe promising phase-field method has been intensively studied for crack approximation in brittle materials. The realistic representation of material degradation at a fully evolved crack is still one of the main challenges. Several energy split formulations have been postulated to describe the crack evolution physically. A recent approach based on the concept of representative crack elements (RCE) in Storm et al. (The concept of representative crack elements (RCE) for phase-field fracture: anisotropic elasticity and thermo-elasticity. Int J Numer Methods Eng 121:779–805, 2020) introduces a variational framework to derive the kinematically consistent material degradation. The realistic material degradation is further tested using the self-consistency condition, which is particularly compared to a discrete crack model. This work extends the brittle RCE phase-field modeling towards rate-dependent fracture evolution in a viscoelastic continuum. The novelty of this paper is taking internal variables due to viscoelasticity into account to determine the crack deformation state. Meanwhile, a transient extension from Storm et al. (The concept of representative crack elements (RCE) for phase-field fracture: anisotropic elasticity and thermo-elasticity. Int J Numer Methods Eng 121:779–805, 2020) is also considered. The model is derived thermodynamic-consistently and implemented into the FE framework. Several representative numerical examples are investigated, and consequently, the according findings and potential perspectives are discussed to close this paper.

Phase Field Model for Influence of Edge Dislocation on Precipitation

2011 ◽  
Vol 415-417 ◽  
pp. 1482-1485
Author(s):  
Chuang Gao Huang ◽  
Ying Jun Gao ◽  
Li Lin Huang ◽  
Jun Long Tian
Keyword(s):  
Edge Dislocation ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Field Method ◽  
Phase Field Method ◽  
Second Phase ◽  
Free Energy Function ◽  
Phase Nucleation ◽  
Good Agreement

The second phase nucleation and precipitation around the edge dislocation are studied using phase-field method. A new free energy function is established. The simulation results are in good agreement with that of theory of dislocation and theory of non-uniform nucleation.

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