Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys

Nagase, Takeshi; Mizuuchi, Kiyoshi; Nakano, Takayoshi

doi:https://doi.org/10.3390/e21050483

Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys

Nagase, Takeshi; Mizuuchi, Kiyoshi; Nakano, Takayoshi

Entropy, 2019, 21(5), 483

アクセス数:132件（2025-04-03 21:52 集計）

固定URL: https://hdl.handle.net/11094/89819

閲覧可能ファイル

ファイル	フォーマット	利用条件	サイズ	閲覧回数	利用開始日	説明	information
Entropy_21_5	pdf	なし	10.3 MB	76	2022.12.26

Creative Commons : 表示

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

タイトル	Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys
著者	NRID 1000050362661 1000050362661 著者名 Nagase, Takeshi
	NRID 1000060416344 1000060416344 著者名 Mizuuchi, Kiyoshi
	NRID 1000030243182 1000030243182 ORCID 0000-0001-8052-1698 0000-0001-8052-1698 researchmap permalink read0013987 read0013987 Scopus Author ID 7403896013 7403896013 著者名 Nakano, Takayoshi
キーワード等	Arc melting
	Biomaterials
	High-entropy alloy
	Levitation melting
	Microstructure
	Solidification
	Thermodynamic calculation
内容	Nagase T., Mizuuchi K., Nakano T.. Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys. Entropy, 21, 5, 483. https://doi.org/10.3390/e21050483.
抄録	The solidification microstructures of the TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, and W) high-entropy alloys (HEAs), including the TiNbTaZrMo bio-HEA, were investigated. Equiaxed dendrite structures were observed in the ingots that were prepared by arc melting, regardless of the position of the ingots and the alloy system. In addition, no significant difference in the solidification microstructure was observed in TiZrNbTaMo bio-HEAs between the arc-melted (AM) ingots and cold crucible levitation melted (CCLM) ingots. A cold shut was observed in theAMingots, but not in theCCLMingots. The interdendrite regions tended to be enriched in Ti and Zr in the TiNbTaZrMEAand TiNbTaZrX (X=V, Mo, and W) HEAs. The distribution coefficients during solidification, which were estimated by thermodynamic calculations, could explain the distribution of the constituent elements in the dendrite and interdendrite regions. The thermodynamic calculations indicated that an increase in the concentration of the low melting-temperature V (2183 K) leads to a monotonic decrease in the liquidus temperature (TL), and that increases in the concentration of high melting-temperature Mo (2896 K) and W (3695 K) lead to a monotonic increase in TL in TiNbTaZrXx (X = V, Mo, and W) (x = 0 - 2) HEAs.
出版者	MDPI
収録物名	Entropy
巻(号)	21(5)
ページ	483
刊行年月	2019-05-10
言語	英語
ハンドルURL	https://hdl.handle.net/11094/89819
eISSN	10994300
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.3390/e21050483
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Entropy. 2019, 21(5), p. 483
DC.title	Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys
DC.creator	Nagase, Takeshi
	Mizuuchi, Kiyoshi
	Nakano, Takayoshi
DC.publisher	MDPI
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2019-05-10
DC.identifier	https://doi.org/10.3390/e21050483
DC.subject	Arc melting
	Biomaterials
	High-entropy alloy
	Levitation melting
	Microstructure
	Solidification
	Thermodynamic calculation
DC.description	Nagase T., Mizuuchi K., Nakano T.. Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys. Entropy, 21, 5, 483. https://doi.org/10.3390/e21050483.
DCTERMS.abstract	The solidification microstructures of the TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, and W) high-entropy alloys (HEAs), including the TiNbTaZrMo bio-HEA, were investigated. Equiaxed dendrite structures were observed in the ingots that were prepared by arc melting, regardless of the position of the ingots and the alloy system. In addition, no significant difference in the solidification microstructure was observed in TiZrNbTaMo bio-HEAs between the arc-melted (AM) ingots and cold crucible levitation melted (CCLM) ingots. A cold shut was observed in theAMingots, but not in theCCLMingots. The interdendrite regions tended to be enriched in Ti and Zr in the TiNbTaZrMEAand TiNbTaZrX (X=V, Mo, and W) HEAs. The distribution coefficients during solidification, which were estimated by thermodynamic calculations, could explain the distribution of the constituent elements in the dendrite and interdendrite regions. The thermodynamic calculations indicated that an increase in the concentration of the low melting-temperature V (2183 K) leads to a monotonic decrease in the liquidus temperature (TL), and that increases in the concentration of high melting-temperature Mo (2896 K) and W (3695 K) lead to a monotonic increase in TL in TiNbTaZrXx (X = V, Mo, and W) (x = 0 - 2) HEAs.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	89819
citation_title	Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys
citation_author	Nagase, Takeshi
	Mizuuchi, Kiyoshi
	Nakano, Takayoshi
citation_publisher	MDPI
citation_language	英語
citation_date	2019-05-10
citation_journal_title	Entropy
citation_volume	21
citation_issue	5
citation_firstpage	483
citation_doi	https://doi.org/10.3390/e21050483
citation_public_url	https://hdl.handle.net/11094/89819

Solidification microstructures of the ingots obtained by arc melting and cold crucible levitation melting in TiNbTaZr medium-entropy alloy and TiNbTaZrX (X = V, Mo, W) high-entropy alloys

閲覧可能ファイル

論文情報

論文詳細を表示