Cargando…

Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties

A reasonable preparation processing of Lanthanum-doped tungsten wire plays a decisive role in the final properties of the wire. This paper gives the optimum drawing process parameters of lanthanum-doped tungsten wire with φ1.00 mm–φ0.50 mm and explains the phenomenon of coarsening of fiber-like grai...

Descripción completa

Detalles Bibliográficos
Autores principales: Wang, Luyan, Yu, Yueguang, Zhang, Peng, Yang, Jiancan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9323575/
https://www.ncbi.nlm.nih.gov/pubmed/35888446
http://dx.doi.org/10.3390/ma15144979
_version_ 1784756584659812352
author Wang, Luyan
Yu, Yueguang
Zhang, Peng
Yang, Jiancan
author_facet Wang, Luyan
Yu, Yueguang
Zhang, Peng
Yang, Jiancan
author_sort Wang, Luyan
collection PubMed
description A reasonable preparation processing of Lanthanum-doped tungsten wire plays a decisive role in the final properties of the wire. This paper gives the optimum drawing process parameters of lanthanum-doped tungsten wire with φ1.00 mm–φ0.50 mm and explains the phenomenon of coarsening of fiber-like grains in the preparation processing of tungsten wire. The final optimum process parameters of lanthanum-doped tungsten wire are given: the temperature is 950 °C (the first pass temperature is 950 °C, and the temperature decreases by about 20 °C for each pass), the compression ratio is 15%, mold temperature is 550 °C, because of the limitation of equipment conditions, the wire drawing speed is fixed at 0.19 m/s. It is found that the fiber-like grains of the tungsten wire coarsen when the temperature is too high, and it is prone to breakage when the temperature is too low during the drawing process. When the compression ratio is too high (for example, 22%), there is a negative impact on the surface quality and the straightness of the tungsten wire. When the compression ratio is too low, the processing die time is increased, and the production cost is increased.
format Online
Article
Text
id pubmed-9323575
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-93235752022-07-27 Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties Wang, Luyan Yu, Yueguang Zhang, Peng Yang, Jiancan Materials (Basel) Article A reasonable preparation processing of Lanthanum-doped tungsten wire plays a decisive role in the final properties of the wire. This paper gives the optimum drawing process parameters of lanthanum-doped tungsten wire with φ1.00 mm–φ0.50 mm and explains the phenomenon of coarsening of fiber-like grains in the preparation processing of tungsten wire. The final optimum process parameters of lanthanum-doped tungsten wire are given: the temperature is 950 °C (the first pass temperature is 950 °C, and the temperature decreases by about 20 °C for each pass), the compression ratio is 15%, mold temperature is 550 °C, because of the limitation of equipment conditions, the wire drawing speed is fixed at 0.19 m/s. It is found that the fiber-like grains of the tungsten wire coarsen when the temperature is too high, and it is prone to breakage when the temperature is too low during the drawing process. When the compression ratio is too high (for example, 22%), there is a negative impact on the surface quality and the straightness of the tungsten wire. When the compression ratio is too low, the processing die time is increased, and the production cost is increased. MDPI 2022-07-18 /pmc/articles/PMC9323575/ /pubmed/35888446 http://dx.doi.org/10.3390/ma15144979 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Luyan
Yu, Yueguang
Zhang, Peng
Yang, Jiancan
Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties
title Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties
title_full Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties
title_fullStr Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties
title_full_unstemmed Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties
title_short Influence of Lanthanum-Doped Tungsten Wire Drawing Process on Microstructure and Properties
title_sort influence of lanthanum-doped tungsten wire drawing process on microstructure and properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9323575/
https://www.ncbi.nlm.nih.gov/pubmed/35888446
http://dx.doi.org/10.3390/ma15144979
work_keys_str_mv AT wangluyan influenceoflanthanumdopedtungstenwiredrawingprocessonmicrostructureandproperties
AT yuyueguang influenceoflanthanumdopedtungstenwiredrawingprocessonmicrostructureandproperties
AT zhangpeng influenceoflanthanumdopedtungstenwiredrawingprocessonmicrostructureandproperties
AT yangjiancan influenceoflanthanumdopedtungstenwiredrawingprocessonmicrostructureandproperties