Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates

In order to study the microstructure evolution rule of pure aluminum plates during different cold-rolled (CR) deformation degrees and annealing processes, samples with aCR deformation of 50~85%, heating rates of 60~100 °C/min and annealing at the target temperature of 350~500 °C were investigated. T...

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Autores principales:	Yunlei Wang, Liping Ren, Jingren Dong, Chuanchuan Cao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cold rolling annealing heating rates crystallite dimension recrystallization fraction Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/d3eeeba94411478daffe759c2f687840
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spelling	oai:doaj.org-article:d3eeeba94411478daffe759c2f6878402021-11-25T17:19:42ZInfluence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates10.3390/cryst111114282073-4352https://doaj.org/article/d3eeeba94411478daffe759c2f6878402021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1428https://doaj.org/toc/2073-4352In order to study the microstructure evolution rule of pure aluminum plates during different cold-rolled (CR) deformation degrees and annealing processes, samples with aCR deformation of 50~85%, heating rates of 60~100 °C/min and annealing at the target temperature of 350~500 °C were investigated. The microstructure, crystallite dimension and grain boundary characteristics were characterized by the methods of polarizing microscope (PM) and electron backscattered diffraction (EBSD). The results showed that the crystallite dimension of the initial state was 102 μm and ends up completely broken with an increase in the CR deformation degree. When the CR deformation increases to 85%, the deformed micro-bands were very small, with a band spacing of 5~10 μm. At this time, the grain distortion is more serious, there are more high-density grain defects, such as dislocations, and there is a high deformation of the storage energy, which is the energy preparation for the subsequent finished products to withstand the annealing process. The recrystallization fraction was higher with an increase in annealing temperature. After completed recrystallization, the grains showed an equiaxed shape. Orientation imaging and misorientation angle analysis showed that the red-oriented grains of the (001) plane, which had preferred nucleation, recrystallization and rapid grain growth. Final grains of the completed recrystallization are relatively coarse. Under the same deformation, the average crystallite dimension of the recrystallized grains decreases with an increase in annealing heating rate.Yunlei WangLiping RenJingren DongChuanchuan CaoMDPI AGarticlecold rollingannealingheating ratescrystallite dimensionrecrystallization fractionCrystallographyQD901-999ENCrystals, Vol 11, Iss 1428, p 1428 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cold rolling annealing heating rates crystallite dimension recrystallization fraction Crystallography QD901-999
spellingShingle	cold rolling annealing heating rates crystallite dimension recrystallization fraction Crystallography QD901-999 Yunlei Wang Liping Ren Jingren Dong Chuanchuan Cao Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates
description	In order to study the microstructure evolution rule of pure aluminum plates during different cold-rolled (CR) deformation degrees and annealing processes, samples with aCR deformation of 50~85%, heating rates of 60~100 °C/min and annealing at the target temperature of 350~500 °C were investigated. The microstructure, crystallite dimension and grain boundary characteristics were characterized by the methods of polarizing microscope (PM) and electron backscattered diffraction (EBSD). The results showed that the crystallite dimension of the initial state was 102 μm and ends up completely broken with an increase in the CR deformation degree. When the CR deformation increases to 85%, the deformed micro-bands were very small, with a band spacing of 5~10 μm. At this time, the grain distortion is more serious, there are more high-density grain defects, such as dislocations, and there is a high deformation of the storage energy, which is the energy preparation for the subsequent finished products to withstand the annealing process. The recrystallization fraction was higher with an increase in annealing temperature. After completed recrystallization, the grains showed an equiaxed shape. Orientation imaging and misorientation angle analysis showed that the red-oriented grains of the (001) plane, which had preferred nucleation, recrystallization and rapid grain growth. Final grains of the completed recrystallization are relatively coarse. Under the same deformation, the average crystallite dimension of the recrystallized grains decreases with an increase in annealing heating rate.
format	article
author	Yunlei Wang Liping Ren Jingren Dong Chuanchuan Cao
author_facet	Yunlei Wang Liping Ren Jingren Dong Chuanchuan Cao
author_sort	Yunlei Wang
title	Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates
title_short	Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates
title_full	Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates
title_fullStr	Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates
title_full_unstemmed	Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates
title_sort	influence of cold rolled deformation degree and heating rates on crystallite dimension and recrystallization fraction of aluminum plates
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d3eeeba94411478daffe759c2f687840
work_keys_str_mv	AT yunleiwang influenceofcoldrolleddeformationdegreeandheatingratesoncrystallitedimensionandrecrystallizationfractionofaluminumplates AT lipingren influenceofcoldrolleddeformationdegreeandheatingratesoncrystallitedimensionandrecrystallizationfractionofaluminumplates AT jingrendong influenceofcoldrolleddeformationdegreeandheatingratesoncrystallitedimensionandrecrystallizationfractionofaluminumplates AT chuanchuancao influenceofcoldrolleddeformationdegreeandheatingratesoncrystallitedimensionandrecrystallizationfractionofaluminumplates
_version_	1718412497538514944

Influence of Cold Rolled Deformation Degree and Heating Rates on Crystallite Dimension and Recrystallization Fraction of Aluminum Plates

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