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In this work, we apply phase field simulations to examine the coarsening behavior of morphologically complex two-phase microstructures in which the phases have highly dissimilar mobilities, a condition approaching that found in experimental solid-liq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0c5eb24ba897f4cead170b700fdad8f
http://arxiv.org/abs/2203.17094
http://arxiv.org/abs/2203.17094
Publikováno v:
npj Computational Materials, Vol 6, Iss 1, Pp 1-12 (2020)
A new phase-field modeling framework with an emphasis on performance, flexibility, and ease of use is presented. Foremost among the strategies employed to fulfill these objectives are the use of a matrix-free finite element method and a modular, appl
Autor:
W. Beck Andrews, Markus Ziehmer, Erica T. Lilleodden, Katsuyo Thornton, Peter W. Voorhees, Christoph Kirchlechner, Kate L.M. Elder, Nadiia Mameka, Alexander F. Chadwick, Anton Davydok, Jean Sébastien Micha
Publikováno v:
Proc Natl Acad Sci U S A
Grain boundary formation during coarsening of nanoporous gold (NPG) is investigated wherein a nanocrystalline structure can form by particles detaching and reattaching to the structure. MicroLaue and electron backscatter diffraction measurements demo
Coarsening of bicontinuous microstructures is observed in a variety of systems, such as nanoporous metals and mixtures that have undergone spinodal decomposition. To better understand the morphological evolution of these structures during coarsening,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::799e106c501ae655caaf9b8b413e9b63
http://arxiv.org/abs/2002.09428
http://arxiv.org/abs/2002.09428
Publikováno v:
Scientific Reports
Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Two-phase mixtures, from metallic alloys to islands on surfaces, undergo coarsening wherein the total interfacial area of the system decreases with time. Theory predicts that during coarsening the average size-scale of a two-phase mixture increases w
Akademický článek
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Autor:
W. Beck Andrews, Michael Moseler, Julian von Lautz, S. Mostafa Khosrownejad, Richard Jana, Lars Pastewka
Publikováno v:
Journal of Physics: Materials
We deform representative volume elements of amorphous carbon obtained from melt-quenches in molecular dynamics calculations using bond-order and machine learning interatomic potentials. A Drucker-Prager law with a zero-pressure flow stress of $41.2$~
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