Numerical modeling of coupled heat transfer and phase transformation for solidification of the gray cast iron

Jabbari, Masoud; Hosseinzadeh, Azin

doi:10.1016/j.commatsci.2012.10.034

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…Masoud Jabbari and Azin Hosseinzadeh [7] Numerical modelling of coupled heat transfer and phase transformation for solidification of the gray cast iron. The nucleation and growth hypothesis was utilized, and cooling rate was executed as a key consider in the solidification stages.…”

confidence: 99%

Al6063, Pure Aluminium and Brass Casting Solidification using Explicit Scheme

Gupta¹,

Kasdekar²,

Gupta³

2016

IJAST

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confidence: 99%

Al6063, Pure Aluminium and Brass Casting Solidification using Explicit Scheme

Gupta¹,

Kasdekar²,

Gupta³

2016

IJAST

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“…O ferro fundido continua sendo o mais importante material de fundição com mais de 70% da tonelagem mundial total produzida. Conforme a forma de apresentação da grafita, o ferro fundido pode ser dividido principalmente em lamelar (ferro fundido cinzento) [1] e esferoidal (ferro fundido nodular). Em especial, o ferro fundido cinzento é tradicionalmente escolhido em muitas aplicações industriais devido a sua flexibilidade de uso: boa fusão, baixo custo (20% a 40% menos que o aço) e uma ampla faixa de propriedades mecânicas.…”

Section: Introductionunclassified

Efeitos De Diferentes Inoculantes Nas Caracteristicas Microestruturais Do Ferro Fundido Cinzento Gg-25, Na Dureza E Vida Util Da Ferramenta De Usinagem

Martin¹,

Moreno²

2018

ABM Proceedings

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ResumoEste trabalho objetivou comparar, por meio de experimentos desenvolvidos em uma fundição, através da adição de três inoculantes diferentes (IM-22 com FeSi-Ba/Zr, G 20 com FeSi-Ba) e IMSR 75 com FeSi-Sr), para observar as características da vida util de ferramentas na usinabilidade das peças, microestrutura e propriedade mecânica. A metodologia da pesquisa se baseou em analisar principalmente pelo processo de fresamento o ferro fundido cinzento GG-25 inoculado diferentemente, denominado de acordo com a Norma DIN EN 1561. As formas de avaliação dos resultados terão como base uma análise quanto ao desgaste da ferramenta, acabamento superficial, análise microestrutural, composição química e propriedades mecânicas do material da peça. Os resultados mostraram que dentre os inoculantes aplicados o com Sulfeto de Estrôncio (SrS) apresentou-se mais estável termodinamicamente que as amostras inoculadas com os outros dois inoculantes, pois ele levou a uma variação da energia livre de Gibbs mais negativa e portanto mais favorável a formação de núcleos com raio crítico (rc) maiores, o que permitirá uma solidificação com nucleação heterogênea. Todavia o respectivo inoculante também foi mais eficiente na formação de uma microestrutura mais estável, com maiores quantidades de células eutéticas e vida útil do inserto mais longa quando usinado. Palavras-chave: Usinabilidade; Ferro fundido cinzento; Desgaste de ferramenta; Células eutéticas. EFFECTS OF DIFFERENT INOCULANTS IN THE MICROSTRUCTURAL CHARACTERISTICS OF GRAY CAST IRON GG-25, HARDNESS AND USEFUL LIFE OF THE MACHINE TOOL AbstractThis study aimed to compare, by means of experiments carried out in a melt, by addition of three different inoculants (IM-22 with Ba-Fe-Si/Zr, G-20 and Ba-FeSi) and IMSR 75 with FeSi-Sr), to observe the characteristics of the useful life of tools in the machinability of the pieces, microstructure and mechanical property. The search methodology is mainly based on analyzing the milling process gray cast iron GG-25 inoculated differently called according to DIN EN 1561. The forms of assessment of the results will be based on an analysis regarding the tool wear, microstructural analysis, chemical composition and mechanical property of the material. The results showed that among the inoculant applied to strontium was found to be more thermodynamically stable than the samples inoculated with the other two inoculants as it led to a more negative variation in Gibbs free energy and hence a more favorable training centers with critical radius (rc) higher, allowing a solidification with heterogeneous nucleation. However its inoculant was also more efficient in forming a more stable microstructure with larger amounts of eutectic cells and longer life of the insert when machined.

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“…Figure22. Schematic diagram illustrating the growth algorithm used in the cellular automata model for a dendritic grain whose \10.…”

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confidence: 99%

“…This field has been active for many years and there is still increasing effort in further developing the numerical simulation tools for variety of different casting processes. 21,22 In the following, five different examples of manufacturing processes and their numerical analysis will be presented. A short introduction to each process will be given followed by some important results.…”

Section: Introductionmentioning

confidence: 99%

Multiphysics modelling of manufacturing processes: A review

Jabbari

Baran

Mohanty³

et al. 2018

Advances in Mechanical Engineering

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Numerical modelling is increasingly supporting the analysis and optimization of manufacturing processes in the production industry. Even if being mostly applied to multistep processes, single process steps may be so complex by nature that the needed models to describe them must include multiphysics. On the other hand, processes which inherently may seem multiphysical by nature might sometimes be modelled by considerably simpler models if the problem at hand can be somehow adequately simplified. In the present article, examples of this will be presented. The cases are chosen with the aim of showing the diversity in the field of modelling of manufacturing processes as regards process, materials, generic disciplines as well as length scales: (1) modelling of tape casting for thin ceramic layers, (2) modelling the flow of polymers in extrusion, (3) modelling the deformation process of flexible stamps for nanoimprint lithography, (4) modelling manufacturing of composite parts and (5) modelling the selective laser melting process. For all five examples, the emphasis is on modelling results as well as describing the models in brief mathematical details. Alongside with relevant references to the original work, proper comparison with experiments is given in some examples for model validation.

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Numerical modeling of coupled heat transfer and phase transformation for solidification of the gray cast iron

Cited by 7 publications

References 11 publications

Al6063, Pure Aluminium and Brass Casting Solidification using Explicit Scheme

Al6063, Pure Aluminium and Brass Casting Solidification using Explicit Scheme

Efeitos De Diferentes Inoculantes Nas Caracteristicas Microestruturais Do Ferro Fundido Cinzento Gg-25, Na Dureza E Vida Util Da Ferramenta De Usinagem

Multiphysics modelling of manufacturing processes: A review

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