Abnormal structure and properties of copper–silver bar billet by cold casting

Copper alloy rod billet with 20% silver was prepared using homemade three-chamber vacuum cold-type vertical continuous casting equipment. The variation rules of the microhardness, eutectic ratio, and size and distribution of silver particles precipitated in the primary α-Cu phase at the end of the c...

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Autores principales:	Wang Yaoli, Song Kexing, He Jilin, Yang Ran, Zhou Yanjun, Cao Jun, Cheng Chu
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	cold-type vertical continuous casting copper–silver alloy microhardness microstructure at the end of bar billet inverse segregation Technology T Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/bbdbfe628d124c36ad944acb9369d71d
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spelling	oai:doaj.org-article:bbdbfe628d124c36ad944acb9369d71d2021-12-05T14:11:03ZAbnormal structure and properties of copper–silver bar billet by cold casting1605-812710.1515/rams-2021-0038https://doaj.org/article/bbdbfe628d124c36ad944acb9369d71d2021-08-01T00:00:00Zhttps://doi.org/10.1515/rams-2021-0038https://doaj.org/toc/1605-8127Copper alloy rod billet with 20% silver was prepared using homemade three-chamber vacuum cold-type vertical continuous casting equipment. The variation rules of the microhardness, eutectic ratio, and size and distribution of silver particles precipitated in the primary α-Cu phase at the end of the continuous casting alloy rod blanks were studied using a microhardness tester and scanning electron microscope. The obtained results show that when the cold-type vertical continuous casting speed is 120 mm·min−1, there is obvious reverse segregation of solute element near the end of the prepared ∅7.8 mm copper–silver alloy rod blank. From the end of the continuous casting alloy rod blank to 5 mm from the end, the Cu–Ag eutectic structure in the copper–silver alloy increases from 13.4 to 15.9%, and the size of Ag particles precipitated in the primary α-Cu phase increases from 100 to 350 nm. The microhardness increases from 56 HV0.05 to 85 HV0.05. When the distance from the end exceeds 5 mm, the microstructure and properties of the continuous casting alloy rod blank are basically stable.Wang YaoliSong KexingHe JilinYang RanZhou YanjunCao JunCheng ChuDe Gruyterarticlecold-type vertical continuous castingcopper–silver alloymicrohardnessmicrostructure at the end of bar billetinverse segregationTechnologyTChemical technologyTP1-1185ENReviews on Advanced Materials Science, Vol 60, Iss 1, Pp 591-598 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cold-type vertical continuous casting copper–silver alloy microhardness microstructure at the end of bar billet inverse segregation Technology T Chemical technology TP1-1185
spellingShingle	cold-type vertical continuous casting copper–silver alloy microhardness microstructure at the end of bar billet inverse segregation Technology T Chemical technology TP1-1185 Wang Yaoli Song Kexing He Jilin Yang Ran Zhou Yanjun Cao Jun Cheng Chu Abnormal structure and properties of copper–silver bar billet by cold casting
description	Copper alloy rod billet with 20% silver was prepared using homemade three-chamber vacuum cold-type vertical continuous casting equipment. The variation rules of the microhardness, eutectic ratio, and size and distribution of silver particles precipitated in the primary α-Cu phase at the end of the continuous casting alloy rod blanks were studied using a microhardness tester and scanning electron microscope. The obtained results show that when the cold-type vertical continuous casting speed is 120 mm·min−1, there is obvious reverse segregation of solute element near the end of the prepared ∅7.8 mm copper–silver alloy rod blank. From the end of the continuous casting alloy rod blank to 5 mm from the end, the Cu–Ag eutectic structure in the copper–silver alloy increases from 13.4 to 15.9%, and the size of Ag particles precipitated in the primary α-Cu phase increases from 100 to 350 nm. The microhardness increases from 56 HV0.05 to 85 HV0.05. When the distance from the end exceeds 5 mm, the microstructure and properties of the continuous casting alloy rod blank are basically stable.
format	article
author	Wang Yaoli Song Kexing He Jilin Yang Ran Zhou Yanjun Cao Jun Cheng Chu
author_facet	Wang Yaoli Song Kexing He Jilin Yang Ran Zhou Yanjun Cao Jun Cheng Chu
author_sort	Wang Yaoli
title	Abnormal structure and properties of copper–silver bar billet by cold casting
title_short	Abnormal structure and properties of copper–silver bar billet by cold casting
title_full	Abnormal structure and properties of copper–silver bar billet by cold casting
title_fullStr	Abnormal structure and properties of copper–silver bar billet by cold casting
title_full_unstemmed	Abnormal structure and properties of copper–silver bar billet by cold casting
title_sort	abnormal structure and properties of copper–silver bar billet by cold casting
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/bbdbfe628d124c36ad944acb9369d71d
work_keys_str_mv	AT wangyaoli abnormalstructureandpropertiesofcoppersilverbarbilletbycoldcasting AT songkexing abnormalstructureandpropertiesofcoppersilverbarbilletbycoldcasting AT hejilin abnormalstructureandpropertiesofcoppersilverbarbilletbycoldcasting AT yangran abnormalstructureandpropertiesofcoppersilverbarbilletbycoldcasting AT zhouyanjun abnormalstructureandpropertiesofcoppersilverbarbilletbycoldcasting AT caojun abnormalstructureandpropertiesofcoppersilverbarbilletbycoldcasting AT chengchu abnormalstructureandpropertiesofcoppersilverbarbilletbycoldcasting
_version_	1718371442654969856

Abnormal structure and properties of copper–silver bar billet by cold casting

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