Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation

Interaction of a single dislocation line and a misfit spherical precipitate has been simulated by the Parametric Dislocation Dynamics (PDD) method in this research. The internal stress inside the precipitate is deduced from Eshelby’s inclusion theory, the stress of the dislocation line and outside t...

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Autores principales:	Haiwei Zheng, Jianbin Liu, Shinji Muraishi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	simulation the parametric dislocation dynamics aluminum Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/69d5d0b4c9bf47d2b17a7696c0fe2128
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spelling	oai:doaj.org-article:69d5d0b4c9bf47d2b17a7696c0fe21282021-11-11T17:56:31ZDislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation10.3390/ma142163681996-1944https://doaj.org/article/69d5d0b4c9bf47d2b17a7696c0fe21282021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6368https://doaj.org/toc/1996-1944Interaction of a single dislocation line and a misfit spherical precipitate has been simulated by the Parametric Dislocation Dynamics (PDD) method in this research. The internal stress inside the precipitate is deduced from Eshelby’s inclusion theory, the stress of the dislocation line and outside the precipitate is calculated by Green’s function. The influence of different relative heights of the primary slip plane on dislocation evolution is investigated, while the cross-slip mechanism and annihilation reaction are considered. The simulation results show three kinds of dislocation topological evolution: loop-forming (Orowan loop or prismatic loop), helix-forming, and gradual unpinning. The dislocation nodal force and the velocity vectors are visualized to study dislocation motion tendency. According to the stress–strain curve and the energy curves associated with the dislocation motion, the pinning stress level is strongly influenced by the topological change of dislocation as well as the relative heights of the primary slip plane.Haiwei ZhengJianbin LiuShinji MuraishiMDPI AGarticlesimulationthe parametric dislocation dynamicsaluminumTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6368, p 6368 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	simulation the parametric dislocation dynamics aluminum Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	simulation the parametric dislocation dynamics aluminum Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Haiwei Zheng Jianbin Liu Shinji Muraishi Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation
description	Interaction of a single dislocation line and a misfit spherical precipitate has been simulated by the Parametric Dislocation Dynamics (PDD) method in this research. The internal stress inside the precipitate is deduced from Eshelby’s inclusion theory, the stress of the dislocation line and outside the precipitate is calculated by Green’s function. The influence of different relative heights of the primary slip plane on dislocation evolution is investigated, while the cross-slip mechanism and annihilation reaction are considered. The simulation results show three kinds of dislocation topological evolution: loop-forming (Orowan loop or prismatic loop), helix-forming, and gradual unpinning. The dislocation nodal force and the velocity vectors are visualized to study dislocation motion tendency. According to the stress–strain curve and the energy curves associated with the dislocation motion, the pinning stress level is strongly influenced by the topological change of dislocation as well as the relative heights of the primary slip plane.
format	article
author	Haiwei Zheng Jianbin Liu Shinji Muraishi
author_facet	Haiwei Zheng Jianbin Liu Shinji Muraishi
author_sort	Haiwei Zheng
title	Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation
title_short	Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation
title_full	Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation
title_fullStr	Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation
title_full_unstemmed	Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation
title_sort	dislocation topological evolution and energy analysis in misfit hardening of spherical precipitate by the parametric dislocation dynamics simulation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/69d5d0b4c9bf47d2b17a7696c0fe2128
work_keys_str_mv	AT haiweizheng dislocationtopologicalevolutionandenergyanalysisinmisfithardeningofsphericalprecipitatebytheparametricdislocationdynamicssimulation AT jianbinliu dislocationtopologicalevolutionandenergyanalysisinmisfithardeningofsphericalprecipitatebytheparametricdislocationdynamicssimulation AT shinjimuraishi dislocationtopologicalevolutionandenergyanalysisinmisfithardeningofsphericalprecipitatebytheparametricdislocationdynamicssimulation
_version_	1718431947159502848

Dislocation Topological Evolution and Energy Analysis in Misfit Hardening of Spherical Precipitate by the Parametric Dislocation Dynamics Simulation

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