Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation

X-ray diffraction experiments were carried out to non-destructively study the interior of aluminum single crystals at the pre-deformation, post-deformation and post-annealing stages using synchrotron radiation at SPring-8. Single crystals were grown by the Bridgman method. The as-grown samples were...

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Autores principales:	Ayumi SHIRO, Tatsuya OKADA, Takahisa SHOBU
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	aluminum single crystal sub-grain tensile deformation recrystallization synchrotron radiation Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/c5ae94290dc3441eb02180e49a5e931b
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spelling	oai:doaj.org-article:c5ae94290dc3441eb02180e49a5e931b2021-11-29T05:53:24ZTensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation2187-974510.1299/mej.19-00634https://doaj.org/article/c5ae94290dc3441eb02180e49a5e931b2020-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/2/7_19-00634/_pdf/-char/enhttps://doaj.org/toc/2187-9745X-ray diffraction experiments were carried out to non-destructively study the interior of aluminum single crystals at the pre-deformation, post-deformation and post-annealing stages using synchrotron radiation at SPring-8. Single crystals were grown by the Bridgman method. The as-grown samples were not perfect from the crystallographic perspective, but were composed of several sub-grains with misorientations smaller than 1° across the sub-boundaries. Although the difference in orientation in the cross section of the sample increased about 0.7° by the application of the nominal strain of 8% in tension along the <111> direction, the sub-grain structures remained largely unchanged. No evidence was found of the local accumulation of dislocations at the sub-boundaries. The orientation map of the deformed sample clearly shows that no non-uniformly deformed regions formed inside the sample. The level of residual strain calculated by the strain-scanning method was as low as 1×10-4. After annealing at 480 °C, the whole cross section of the center of the sample was covered by a single recrystallized grain. Although the resolution of the present experiments was insufficient to observe potential nucleation sites of recrystallized grains in <111>-oriented crystals, a possible candidate for the sites may be assumed at the intersections of certain types of slip bands.Ayumi SHIROTatsuya OKADATakahisa SHOBUThe Japan Society of Mechanical Engineersarticlealuminumsingle crystalsub-graintensile deformationrecrystallizationsynchrotron radiationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 2, Pp 19-00634-19-00634 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	aluminum single crystal sub-grain tensile deformation recrystallization synchrotron radiation Mechanical engineering and machinery TJ1-1570
spellingShingle	aluminum single crystal sub-grain tensile deformation recrystallization synchrotron radiation Mechanical engineering and machinery TJ1-1570 Ayumi SHIRO Tatsuya OKADA Takahisa SHOBU Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation
description	X-ray diffraction experiments were carried out to non-destructively study the interior of aluminum single crystals at the pre-deformation, post-deformation and post-annealing stages using synchrotron radiation at SPring-8. Single crystals were grown by the Bridgman method. The as-grown samples were not perfect from the crystallographic perspective, but were composed of several sub-grains with misorientations smaller than 1° across the sub-boundaries. Although the difference in orientation in the cross section of the sample increased about 0.7° by the application of the nominal strain of 8% in tension along the <111> direction, the sub-grain structures remained largely unchanged. No evidence was found of the local accumulation of dislocations at the sub-boundaries. The orientation map of the deformed sample clearly shows that no non-uniformly deformed regions formed inside the sample. The level of residual strain calculated by the strain-scanning method was as low as 1×10-4. After annealing at 480 °C, the whole cross section of the center of the sample was covered by a single recrystallized grain. Although the resolution of the present experiments was insufficient to observe potential nucleation sites of recrystallized grains in <111>-oriented crystals, a possible candidate for the sites may be assumed at the intersections of certain types of slip bands.
format	article
author	Ayumi SHIRO Tatsuya OKADA Takahisa SHOBU
author_facet	Ayumi SHIRO Tatsuya OKADA Takahisa SHOBU
author_sort	Ayumi SHIRO
title	Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation
title_short	Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation
title_full	Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation
title_fullStr	Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation
title_full_unstemmed	Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation
title_sort	tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron x-ray radiation
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/c5ae94290dc3441eb02180e49a5e931b
work_keys_str_mv	AT ayumishiro tensiledeformationandrecrystallizationofaluminumsinglecrystalswithsubgrainedstructuresstudiedbysynchrotronxrayradiation AT tatsuyaokada tensiledeformationandrecrystallizationofaluminumsinglecrystalswithsubgrainedstructuresstudiedbysynchrotronxrayradiation AT takahisashobu tensiledeformationandrecrystallizationofaluminumsinglecrystalswithsubgrainedstructuresstudiedbysynchrotronxrayradiation
_version_	1718407611454324736

Tensile deformation and recrystallization of aluminum single crystals with sub-grained structures studied by synchrotron X-ray radiation

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