Cargando…

Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders

High-activity spherical TaNbTiZr refractory high-entropy alloy (REHA) powders were successfully prepared by electrode induction melting gas atomization (EIGA) and plasma rotating electrode process (PREP) methods. Both the EIGAed and PREPed TaNbTiZr RHEA powders have a single-phase body-centered cubi...

Descripción completa

Detalles Bibliográficos
Autores principales: Gao, Shenghan, Fu, Ao, Xie, Zhonghao, Liao, Tao, Cao, Yuankui, Liu, Bin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9861712/
https://www.ncbi.nlm.nih.gov/pubmed/36676527
http://dx.doi.org/10.3390/ma16020791
_version_ 1784874910123819008
author Gao, Shenghan
Fu, Ao
Xie, Zhonghao
Liao, Tao
Cao, Yuankui
Liu, Bin
author_facet Gao, Shenghan
Fu, Ao
Xie, Zhonghao
Liao, Tao
Cao, Yuankui
Liu, Bin
author_sort Gao, Shenghan
collection PubMed
description High-activity spherical TaNbTiZr refractory high-entropy alloy (REHA) powders were successfully prepared by electrode induction melting gas atomization (EIGA) and plasma rotating electrode process (PREP) methods. Both the EIGAed and PREPed TaNbTiZr RHEA powders have a single-phase body-centered cubic (BCC) structure and low oxygen content. Compared with the EIGAed powders, the PREPed powders exhibit higher sphericity and smoother surface, but larger particle size. The average particle sizes of the EIGAed and PREPed powders are 51.8 and 65.9 μm, respectively. In addition, both the coarse EIGAed and PREPed powders have dendritic structure, and the dendrite size of the EIGAed powders is larger than that of the PREPed powders. Theoretical calculation indicates that the cooling rate of the PREPed powders is one order of magnitude higher than that of the EIGAed powders during the solidification process, and the dendritic structure has more time to grow during EIGA, which is the main reason for the coarser dendrite size of the EIGAed powders.
format Online
Article
Text
id pubmed-9861712
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-98617122023-01-22 Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders Gao, Shenghan Fu, Ao Xie, Zhonghao Liao, Tao Cao, Yuankui Liu, Bin Materials (Basel) Article High-activity spherical TaNbTiZr refractory high-entropy alloy (REHA) powders were successfully prepared by electrode induction melting gas atomization (EIGA) and plasma rotating electrode process (PREP) methods. Both the EIGAed and PREPed TaNbTiZr RHEA powders have a single-phase body-centered cubic (BCC) structure and low oxygen content. Compared with the EIGAed powders, the PREPed powders exhibit higher sphericity and smoother surface, but larger particle size. The average particle sizes of the EIGAed and PREPed powders are 51.8 and 65.9 μm, respectively. In addition, both the coarse EIGAed and PREPed powders have dendritic structure, and the dendrite size of the EIGAed powders is larger than that of the PREPed powders. Theoretical calculation indicates that the cooling rate of the PREPed powders is one order of magnitude higher than that of the EIGAed powders during the solidification process, and the dendritic structure has more time to grow during EIGA, which is the main reason for the coarser dendrite size of the EIGAed powders. MDPI 2023-01-13 /pmc/articles/PMC9861712/ /pubmed/36676527 http://dx.doi.org/10.3390/ma16020791 Text en © 2023 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
Gao, Shenghan
Fu, Ao
Xie, Zhonghao
Liao, Tao
Cao, Yuankui
Liu, Bin
Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders
title Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders
title_full Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders
title_fullStr Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders
title_full_unstemmed Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders
title_short Preparation and Microstructure of High-Activity Spherical TaNbTiZr Refractory High-Entropy Alloy Powders
title_sort preparation and microstructure of high-activity spherical tanbtizr refractory high-entropy alloy powders
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9861712/
https://www.ncbi.nlm.nih.gov/pubmed/36676527
http://dx.doi.org/10.3390/ma16020791
work_keys_str_mv AT gaoshenghan preparationandmicrostructureofhighactivitysphericaltanbtizrrefractoryhighentropyalloypowders
AT fuao preparationandmicrostructureofhighactivitysphericaltanbtizrrefractoryhighentropyalloypowders
AT xiezhonghao preparationandmicrostructureofhighactivitysphericaltanbtizrrefractoryhighentropyalloypowders
AT liaotao preparationandmicrostructureofhighactivitysphericaltanbtizrrefractoryhighentropyalloypowders
AT caoyuankui preparationandmicrostructureofhighactivitysphericaltanbtizrrefractoryhighentropyalloypowders
AT liubin preparationandmicrostructureofhighactivitysphericaltanbtizrrefractoryhighentropyalloypowders