Development of Ti–Zr–Hf–Y–La high-entropy alloys with dual hexagonal-close-packed structure

Nagase, Takeshi; Todai, Mitsuharu; Nakano, Takayoshi

Scripta Materialia, 2020, 186, 242-246

Number of Access:585（2025-08-21 04:36 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89801

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Title
Development of Ti–Zr–Hf–Y–La high-entropy alloys with dual hexagonal-close-packed structure
Creator
NRID
1000050362661 1000050362661
CreatorName
Nagase, Takeshi
NRID
1000010610800 1000010610800
CreatorName
Todai, Mitsuharu
NRID
1000030243182 1000030243182
ORCID
0000-0001-8052-1698 0000-0001-8052-1698
researchmap permalink
read0013987 read0013987
Scopus Author ID
7403896013 7403896013
CreatorName
Nakano, Takayoshi
Subject
Biomaterials
High entropy alloys
Liquid phase separation
Metals and alloys
Microstructure
Solidification
Description
Nagase T., Todai M., Nakano T.. Development of Ti–Zr–Hf–Y–La high-entropy alloys with dual hexagonal-close-packed structure. Scripta Materialia, 186, 242. https://doi.org/10.1016/j.scriptamat.2020.05.033.
Abstract
TiZrHfYLa0.2 high-entropy alloys (HEAs) with dual hexagonal-closed-packed (HCP) structures were designed based on the concept of liquid phase separation (LPS) and segregation for enhancing the immiscibility of the constituent elements. The LPS leads to a particular solidification microstructure on the free surface side and Cu-hearth contacted area in the ingots. The dual HCP structures with equi-axis Ti–Zr–Hf dendrite and Y-La-rich interdendrite were observed at most regions of the arc-melted ingots. The mixing enthalpy among the constituent elements and predicted phase diagrams constructed by the Materials Project were effective for the alloy design of the HEAs with dual HCP structures.
Publisher
Acta Materialia Inc.
Source Title
Scripta Materialia
Volume (Issue)
186
Page
242-246
Date of Issued
2020-09-01
Language
English
Handle URL
https://hdl.handle.net/11094/89801
PISSN
13596462
NCID
AA11067905
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.scriptamat.2020.05.033
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article