In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures

Heterogeneous Al–Si microstructure comprising of sub-micron-scale Al dendrites and nanoscale Al–Si fibrous eutectic was fabricated by processing as-cast Al-20wt.%Si alloy using laser rapid solidification. In situ tension tests explored high tensile strength (∼600 MPa) and ductility (∼10%) and high s...

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Autores principales:	Bingqiang Wei, Wenqian Wu, Dongyue Xie, Huai-Hsun Lien, Metin Kayitmazbatir, Amit Misra, Jian Wang
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	al–si eutectic laser rapid solidification ductility strain hardening dislocation Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/c1e9185b585d4f72a0e555fa14d5e478
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spelling	oai:doaj.org-article:c1e9185b585d4f72a0e555fa14d5e4782021-11-04T15:51:55ZIn situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures2166-383110.1080/21663831.2021.1987346https://doaj.org/article/c1e9185b585d4f72a0e555fa14d5e4782021-12-01T00:00:00Zhttp://dx.doi.org/10.1080/21663831.2021.1987346https://doaj.org/toc/2166-3831Heterogeneous Al–Si microstructure comprising of sub-micron-scale Al dendrites and nanoscale Al–Si fibrous eutectic was fabricated by processing as-cast Al-20wt.%Si alloy using laser rapid solidification. In situ tension tests explored high tensile strength (∼600 MPa) and ductility (∼10%) and high strain hardening rate (∼7 GPa). Microstructural characterization revealed the plastic co-deformation mechanisms between soft Al dendrites and hard nanoscale Al–Si eutectic. The progression of plasticity in nanoscale Al–Si eutectic with increasing applied strain is accommodated by dislocation plasticity in the nano-Al channels and cracking Si nanofibers. The propagation of nano-cracks is suppressed by surrounding Al, retaining good ductility of the sample.Bingqiang WeiWenqian WuDongyue XieHuai-Hsun LienMetin KayitmazbatirAmit MisraJian WangTaylor & Francis Grouparticleal–si eutecticlaser rapid solidificationductilitystrain hardeningdislocationMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials Research Letters, Vol 9, Iss 12, Pp 507-515 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	al–si eutectic laser rapid solidification ductility strain hardening dislocation Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	al–si eutectic laser rapid solidification ductility strain hardening dislocation Materials of engineering and construction. Mechanics of materials TA401-492 Bingqiang Wei Wenqian Wu Dongyue Xie Huai-Hsun Lien Metin Kayitmazbatir Amit Misra Jian Wang In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
description	Heterogeneous Al–Si microstructure comprising of sub-micron-scale Al dendrites and nanoscale Al–Si fibrous eutectic was fabricated by processing as-cast Al-20wt.%Si alloy using laser rapid solidification. In situ tension tests explored high tensile strength (∼600 MPa) and ductility (∼10%) and high strain hardening rate (∼7 GPa). Microstructural characterization revealed the plastic co-deformation mechanisms between soft Al dendrites and hard nanoscale Al–Si eutectic. The progression of plasticity in nanoscale Al–Si eutectic with increasing applied strain is accommodated by dislocation plasticity in the nano-Al channels and cracking Si nanofibers. The propagation of nano-cracks is suppressed by surrounding Al, retaining good ductility of the sample.
format	article
author	Bingqiang Wei Wenqian Wu Dongyue Xie Huai-Hsun Lien Metin Kayitmazbatir Amit Misra Jian Wang
author_facet	Bingqiang Wei Wenqian Wu Dongyue Xie Huai-Hsun Lien Metin Kayitmazbatir Amit Misra Jian Wang
author_sort	Bingqiang Wei
title	In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
title_short	In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
title_full	In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
title_fullStr	In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
title_full_unstemmed	In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
title_sort	in situ characterization of tensile behavior of laser rapid solidified al–si heterogeneous microstructures
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/c1e9185b585d4f72a0e555fa14d5e478
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_version_	1718444738560917504

In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures

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