Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite

Nano-Al2O3 dispersion-strengthened Cu20W composite was fabricated by vacuum hot-pressing sintering process. The electrical conductivity, relative density, and Brinell hardness were tested, respectively. The gleeble-1500D thermomechanical simulator was used to conduct isothermal compression with stra...

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Autores principales:	An Junchao, Zhou Meng, Tian Baohong, Geng Yongfeng, Ban Yijie, Liang Shengli
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	vacuum hot-pressing sintering hot deformation dynamic recrystallization constitutive equation Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/d00783790c00427fb3b6b5d10fcd0ce8
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spelling	oai:doaj.org-article:d00783790c00427fb3b6b5d10fcd0ce82021-12-05T14:11:03ZHot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite2191-035910.1515/secm-2021-0044https://doaj.org/article/d00783790c00427fb3b6b5d10fcd0ce82021-09-01T00:00:00Zhttps://doi.org/10.1515/secm-2021-0044https://doaj.org/toc/2191-0359Nano-Al2O3 dispersion-strengthened Cu20W composite was fabricated by vacuum hot-pressing sintering process. The electrical conductivity, relative density, and Brinell hardness were tested, respectively. The gleeble-1500D thermomechanical simulator was used to conduct isothermal compression with strain rates ranging from 0.001 to 10 s−1 and the temperatures ranging from 650 to 950°C. The microstructure of the Cu–Al2O3/20W composite was observed using an optical microscope and a transmission electron microscope, and the true stress–strain curves were analyzed. In addition, the influence of the nano-Al2O3 and tungsten on the thermal deformation process of the composite was analyzed. The relationship and interaction among work hardening, dynamic recovery, and dynamic recrystallization were illustrated. The results show that nano-Al2O3 particles pin dislocations and inhibit dynamic recovery and dynamic recrystallization. Consequently, the Cu–Al2O3/20W composite has typical dynamic recovery characteristics. Hence, the Cu–Al2O3/20W composite possesses outstanding high-temperature performance. The optimal processing domain of the Cu–Al2O3/20W composite ranged from 760 to 950°C with strain rates ranging from 0.01 to 0.1 s−1. Furthermore, the constitutive equation of the Cu–Al2O3/20W composite is established, and the activation energy is 155.069 kJ mol−1.An JunchaoZhou MengTian BaohongGeng YongfengBan YijieLiang ShengliDe Gruyterarticlevacuum hot-pressing sinteringhot deformationdynamic recrystallizationconstitutive equationMaterials of engineering and construction. Mechanics of materialsTA401-492ENScience and Engineering of Composite Materials, Vol 28, Iss 1, Pp 500-509 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	vacuum hot-pressing sintering hot deformation dynamic recrystallization constitutive equation Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	vacuum hot-pressing sintering hot deformation dynamic recrystallization constitutive equation Materials of engineering and construction. Mechanics of materials TA401-492 An Junchao Zhou Meng Tian Baohong Geng Yongfeng Ban Yijie Liang Shengli Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite
description	Nano-Al2O3 dispersion-strengthened Cu20W composite was fabricated by vacuum hot-pressing sintering process. The electrical conductivity, relative density, and Brinell hardness were tested, respectively. The gleeble-1500D thermomechanical simulator was used to conduct isothermal compression with strain rates ranging from 0.001 to 10 s−1 and the temperatures ranging from 650 to 950°C. The microstructure of the Cu–Al2O3/20W composite was observed using an optical microscope and a transmission electron microscope, and the true stress–strain curves were analyzed. In addition, the influence of the nano-Al2O3 and tungsten on the thermal deformation process of the composite was analyzed. The relationship and interaction among work hardening, dynamic recovery, and dynamic recrystallization were illustrated. The results show that nano-Al2O3 particles pin dislocations and inhibit dynamic recovery and dynamic recrystallization. Consequently, the Cu–Al2O3/20W composite has typical dynamic recovery characteristics. Hence, the Cu–Al2O3/20W composite possesses outstanding high-temperature performance. The optimal processing domain of the Cu–Al2O3/20W composite ranged from 760 to 950°C with strain rates ranging from 0.01 to 0.1 s−1. Furthermore, the constitutive equation of the Cu–Al2O3/20W composite is established, and the activation energy is 155.069 kJ mol−1.
format	article
author	An Junchao Zhou Meng Tian Baohong Geng Yongfeng Ban Yijie Liang Shengli
author_facet	An Junchao Zhou Meng Tian Baohong Geng Yongfeng Ban Yijie Liang Shengli
author_sort	An Junchao
title	Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite
title_short	Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite
title_full	Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite
title_fullStr	Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite
title_full_unstemmed	Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite
title_sort	hot deformation behavior of nano-al2o3-dispersion-strengthened cu20w composite
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/d00783790c00427fb3b6b5d10fcd0ce8
work_keys_str_mv	AT anjunchao hotdeformationbehaviorofnanoal2o3dispersionstrengthenedcu20wcomposite AT zhoumeng hotdeformationbehaviorofnanoal2o3dispersionstrengthenedcu20wcomposite AT tianbaohong hotdeformationbehaviorofnanoal2o3dispersionstrengthenedcu20wcomposite AT gengyongfeng hotdeformationbehaviorofnanoal2o3dispersionstrengthenedcu20wcomposite AT banyijie hotdeformationbehaviorofnanoal2o3dispersionstrengthenedcu20wcomposite AT liangshengli hotdeformationbehaviorofnanoal2o3dispersionstrengthenedcu20wcomposite
_version_	1718371445731491840

Hot deformation behavior of nano-Al2O3-dispersion-strengthened Cu20W composite

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