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nucleation modeling

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Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005410
EISBN: 978-1-62708-196-2
... steady-state nucleation rate incubation time homogeneous phase cluster condensation evaporation rate cluster dynamics nucleation modeling precipitate size distribution NUCLEATION is the onset of a first-order phase transition by which a metastable phase transforms into a more stable one...
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Published: 01 November 2010
Fig. 8 Nucleation model. The grain density, n , is plotted versus the undercooling, Δ T . The derivative is plotted above. More
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Published: 01 December 2009
Fig. 3 Heuristic multistage modeling framework for nucleation and growth of fatigue cracks. Cycles N MSC and N PSC , respectively, represent the number of cycles to propagate the crack(s) in the regimes of microstructurally small crack (MSC) growth (normally 3–10 times the grain or second More
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Published: 01 January 1996
Fig. 18 Neumann's model of crack nucleation. In part (c), A represents a crack nucleus. Source: Ref 42 More
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Published: 01 January 1996
Fig. 19 Fujita's model of crack nucleation. See text for definitions of symbols. Source: Ref 79 More
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Published: 01 January 1996
Fig. 20 Oding's model of crack nucleation. b , Burgers vector. Source Ref 80 More
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Published: 31 August 2017
compound associated with graphite, La,Ca,Al-FeSi inoculated iron. (g) Three-stage graphite nucleation model More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005207
EISBN: 978-1-62708-187-0
.... The article describes nucleation phenomenon such as homogeneous nucleation and heterogeneous nucleation. It examines various grain refinement models, such as the carbide-boride model, the free growth model, and the constitutional undercooling model. The article concludes with information on the thermal...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005432
EISBN: 978-1-62708-196-2
..., the nucleation rate can be characterized as a function of processing parameters, such as the Zener-Hollomon parameter, and strain and used as direct input to the CA simulation ( Ref 31 ). In each case, the nucleation criterion is not derived from a model of nucleation per se but rather is a proxy for events...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005415
EISBN: 978-1-62708-196-2
... Abstract This article discusses the fundamental aspects of phase-field microstructure modeling. It describes the evolution of microstructure modeling, including nucleation, growth, and coarsening. The article reviews two approaches used in the modeling nucleation of microstructure: the Langevin...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... Abstract This article focuses on characterizing the fracture-surface appearance at the microscale and contains some discussion on both crack nucleation and propagation mechanisms that cause the fracture appearance. It begins with a discussion on microscale models and mechanisms for deformation...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005403
EISBN: 978-1-62708-196-2
... dynamic recrystallization (DDRX). The article discusses the assumptions and simplifications for the Avrami analysis. It describes the effects of nucleation and growth rates on recrystallization kinetics and recrystallized grain size based on the Johnson-Mehl-Avrami-Kolmogorov model for static...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006300
EISBN: 978-1-62708-179-5
... binary Fe-C phase diagram deformation modeling ferrite transformation lamellar graphite iron nucleation spheroidal graphite iron THE SOLID-STATE TRANSFORMATION products of common cast irons (excluding austenitic cast irons) may be ferrite, pearlite, bainite, and martensite. This article covers...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
... of monitoring via an inspection scheme. This article begins with a discussion on the stages of the fatigue damage process. It describes hierarchical multistage fatigue modeling and several key points regarding the physics of crack nucleation and microstructurally small crack propagation in the HCF regime...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005421
EISBN: 978-1-62708-196-2
... Abstract This article focuses on the modeling and simulation of cavitation phenomena. It summarizes the experimental observations of cavitation and reviews the modeling of cavity nucleation and growth. The article discusses the modeling of the cavity growth based on mesoscale and microscale...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005520
EISBN: 978-1-62708-197-9
... 9 , Ref 10 , Ref 11 ), n analytical solutions ( Ref 12 ), flow simulations ( Ref 13 ), and finally to complex direct simulations of the nucleation of multiple solid and gas phases coupled to macroscopic shrinkage models ( Ref 14 ). The first class of models, criteria functions, was initiated...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002355
EISBN: 978-1-62708-193-1
... important factors in defining crack sites. Mughrabi et al. ( Ref 12 ) showed that nucleation at grain boundaries occurs at sites where persistent slip bands (PSBs) impinge, and they formulated a dislocation model of this kind of crack initiation. This article emphasizes nucleation at fatigue slip bands...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002367
EISBN: 978-1-62708-193-1
... favor long crack growth and the conditions, which favor crack nucleation are contrasted. The article presents experimental data, which is used to show the effect of weldment geometry on fatigue resistance. Several useful geometry classification systems are compared. The article analyzes a computer model...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005236
EISBN: 978-1-62708-187-0
... and applications of the phase field method and the cellular automaton method for modeling the direct evolution of structure at the intermediate length scales, where transport phenomena govern the spatial and temporal evolution of the structure that involves nucleation and growth. casting cellular automaton...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005458
EISBN: 978-1-62708-196-2
... Abstract Any model that describes the early stage of cavitation must therefore address experimental observations of continuous nucleation, cracklike interface cavities, cavity growth from nanometer-scale sizes, and debonding at particle interfaces and formation of large-faceted cavities...