Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation

Alloy elements can influence the microstructure evolution of aluminum alloys in the state of solid solute atoms or nano-precipitated silicon particles, but it is still a controversial subject which form has a more significant effect on the microstructure of aluminum alloys. Therefore, taking the Al-...

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Autores principales:	TANG Jingzhao, YAN Jiawei, SHEN Yao
Formato:	article
Lenguaje:	ZH
Publicado:	Editorial Office of Journal of Shanghai Jiao Tong University 2021
Materias:	al-1%si alloy accumulative roll-bonding alloy element form microstructure yield strength Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
Acceso en línea:	https://doaj.org/article/71e60b3d639d4c5f85ecc182ecb6770a
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spelling	oai:doaj.org-article:71e60b3d639d4c5f85ecc182ecb6770a2021-11-04T09:28:54ZEffect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation1006-246710.16183/j.cnki.jsjtu.2020.001https://doaj.org/article/71e60b3d639d4c5f85ecc182ecb6770a2021-03-01T00:00:00Zhttp://xuebao.sjtu.edu.cn/CN/10.16183/j.cnki.jsjtu.2020.001https://doaj.org/toc/1006-2467Alloy elements can influence the microstructure evolution of aluminum alloys in the state of solid solute atoms or nano-precipitated silicon particles, but it is still a controversial subject which form has a more significant effect on the microstructure of aluminum alloys. Therefore, taking the Al-1%Si alloy as the research object, the ratio of precipitation state and the solid solution state of the silicon atoms was changed before deformation and a multi-pass accumulative roll-bonding method was used to achieve large deformation. In order to compare the influence of solid solute atoms and nano-precipitated silicon particles on the structure and properties of aluminum alloy during deformation, a comparative study was conducted on the evolution of nano-precipitated silicon particles, grain size, and dislocation density in the process of reaching the saturation state of the microstructure and mechanical properties. The results show that the initial samples with less nano-precipitated silicon particles and more solute silicon atoms have a higher saturated dislocation density and a smaller saturated grain size after deformation, corresponding to a higher saturated yield strength. Solid solute silicon atoms dispersed in the Al-1%Si alloy have a better overall effect than nano-precipitated silicon particles of the same volume in preventing the dynamic recovery of dislocations, which is consistent with the theoretical analysis of dislocations. The dislocation recovery ability in the material affects its saturated grain size. The stronger the dislocation recovery capacity, the larger the saturated grain size.TANG JingzhaoYAN JiaweiSHEN YaoEditorial Office of Journal of Shanghai Jiao Tong Universityarticleal-1%si alloyaccumulative roll-bondingalloy element formmicrostructureyield strengthEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156Naval architecture. Shipbuilding. Marine engineeringVM1-989ZHShanghai Jiaotong Daxue xuebao, Vol 55, Iss 03, Pp 249-257 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	al-1%si alloy accumulative roll-bonding alloy element form microstructure yield strength Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
spellingShingle	al-1%si alloy accumulative roll-bonding alloy element form microstructure yield strength Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989 TANG Jingzhao YAN Jiawei SHEN Yao Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation
description	Alloy elements can influence the microstructure evolution of aluminum alloys in the state of solid solute atoms or nano-precipitated silicon particles, but it is still a controversial subject which form has a more significant effect on the microstructure of aluminum alloys. Therefore, taking the Al-1%Si alloy as the research object, the ratio of precipitation state and the solid solution state of the silicon atoms was changed before deformation and a multi-pass accumulative roll-bonding method was used to achieve large deformation. In order to compare the influence of solid solute atoms and nano-precipitated silicon particles on the structure and properties of aluminum alloy during deformation, a comparative study was conducted on the evolution of nano-precipitated silicon particles, grain size, and dislocation density in the process of reaching the saturation state of the microstructure and mechanical properties. The results show that the initial samples with less nano-precipitated silicon particles and more solute silicon atoms have a higher saturated dislocation density and a smaller saturated grain size after deformation, corresponding to a higher saturated yield strength. Solid solute silicon atoms dispersed in the Al-1%Si alloy have a better overall effect than nano-precipitated silicon particles of the same volume in preventing the dynamic recovery of dislocations, which is consistent with the theoretical analysis of dislocations. The dislocation recovery ability in the material affects its saturated grain size. The stronger the dislocation recovery capacity, the larger the saturated grain size.
format	article
author	TANG Jingzhao YAN Jiawei SHEN Yao
author_facet	TANG Jingzhao YAN Jiawei SHEN Yao
author_sort	TANG Jingzhao
title	Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation
title_short	Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation
title_full	Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation
title_fullStr	Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation
title_full_unstemmed	Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation
title_sort	effect of silicon state on microstructure and properties of al-1%si alloy during severe plastic deformation
publisher	Editorial Office of Journal of Shanghai Jiao Tong University
publishDate	2021
url	https://doaj.org/article/71e60b3d639d4c5f85ecc182ecb6770a
work_keys_str_mv	AT tangjingzhao effectofsiliconstateonmicrostructureandpropertiesofal1sialloyduringsevereplasticdeformation AT yanjiawei effectofsiliconstateonmicrostructureandpropertiesofal1sialloyduringsevereplasticdeformation AT shenyao effectofsiliconstateonmicrostructureandpropertiesofal1sialloyduringsevereplasticdeformation
_version_	1718444968496857088

Effect of Silicon State on Microstructure and Properties of Al-1%Si Alloy During Severe Plastic Deformation

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