Design and development of (Ti, Zr, Hf)-Al based medium entropy alloys and high entropy alloys

Takeshi Nagase; Mitsuharu Todai; Pan Wang; Shi Hai Sun; Takayoshi Nakano

doi:10.1016/j.matchemphys.2021.125409

Design and development of (Ti, Zr, Hf)-Al based medium entropy alloys and high entropy alloys

Takeshi Nagase, Mitsuharu Todai, Pan Wang, Shi Hai Sun, Takayoshi Nakano^*

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The design and development of TiZrHfAl medium entropy alloy (MEA), and the TiZrHfAlNb_0.2 and TiZrHfAlV_0.2 high entropy alloys (HEAs) is described. The combination of 4th subgroup elements (Ti, Zr, and Hf) with Al is discussed based on the periodic table and taxonomy of HEAs. The alloys were designed using alloy parameters for HEAs, predicted ground state diagrams from the Materials Project, and the calculation of phase diagrams (CALPHAD). Rapid solidification was effective to suppress the formation of intermetallic compounds, resulting in BCC/B2 phase formation. Significant differences in the constituent phases and Vickers hardness between ingots and melt-spun ribbons were found among the TiZrHfAl MEA, TiZrHfAlNb_0.2, and TiZrHfAlV_0.2 HEAs.

Original language	English
Article number	125409
Journal	Materials Chemistry and Physics
Volume	276
DOIs	https://doi.org/10.1016/j.matchemphys.2021.125409
Publication status	Published - 15 Jan 2022

Keywords

Alloy design
Electron microscopy
High entropy alloys
Microstructure
Rapid-solidification

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10.1016/j.matchemphys.2021.125409

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title = "Design and development of (Ti, Zr, Hf)-Al based medium entropy alloys and high entropy alloys",

abstract = "The design and development of TiZrHfAl medium entropy alloy (MEA), and the TiZrHfAlNb0.2 and TiZrHfAlV0.2 high entropy alloys (HEAs) is described. The combination of 4th subgroup elements (Ti, Zr, and Hf) with Al is discussed based on the periodic table and taxonomy of HEAs. The alloys were designed using alloy parameters for HEAs, predicted ground state diagrams from the Materials Project, and the calculation of phase diagrams (CALPHAD). Rapid solidification was effective to suppress the formation of intermetallic compounds, resulting in BCC/B2 phase formation. Significant differences in the constituent phases and Vickers hardness between ingots and melt-spun ribbons were found among the TiZrHfAl MEA, TiZrHfAlNb0.2, and TiZrHfAlV0.2 HEAs.",

keywords = "Alloy design, Electron microscopy, High entropy alloys, Microstructure, Rapid-solidification",

author = "Takeshi Nagase and Mitsuharu Todai and Pan Wang and Sun, {Shi Hai} and Takayoshi Nakano",

note = "Publisher Copyright: {\textcopyright} 2021 The Authors",

year = "2022",

month = jan,

day = "15",

doi = "10.1016/j.matchemphys.2021.125409",

language = "English",

volume = "276",

journal = "Materials Chemistry and Physics",

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TY - JOUR

T1 - Design and development of (Ti, Zr, Hf)-Al based medium entropy alloys and high entropy alloys

AU - Nagase, Takeshi

AU - Todai, Mitsuharu

AU - Wang, Pan

AU - Sun, Shi Hai

AU - Nakano, Takayoshi

PY - 2022/1/15

Y1 - 2022/1/15

N2 - The design and development of TiZrHfAl medium entropy alloy (MEA), and the TiZrHfAlNb0.2 and TiZrHfAlV0.2 high entropy alloys (HEAs) is described. The combination of 4th subgroup elements (Ti, Zr, and Hf) with Al is discussed based on the periodic table and taxonomy of HEAs. The alloys were designed using alloy parameters for HEAs, predicted ground state diagrams from the Materials Project, and the calculation of phase diagrams (CALPHAD). Rapid solidification was effective to suppress the formation of intermetallic compounds, resulting in BCC/B2 phase formation. Significant differences in the constituent phases and Vickers hardness between ingots and melt-spun ribbons were found among the TiZrHfAl MEA, TiZrHfAlNb0.2, and TiZrHfAlV0.2 HEAs.

AB - The design and development of TiZrHfAl medium entropy alloy (MEA), and the TiZrHfAlNb0.2 and TiZrHfAlV0.2 high entropy alloys (HEAs) is described. The combination of 4th subgroup elements (Ti, Zr, and Hf) with Al is discussed based on the periodic table and taxonomy of HEAs. The alloys were designed using alloy parameters for HEAs, predicted ground state diagrams from the Materials Project, and the calculation of phase diagrams (CALPHAD). Rapid solidification was effective to suppress the formation of intermetallic compounds, resulting in BCC/B2 phase formation. Significant differences in the constituent phases and Vickers hardness between ingots and melt-spun ribbons were found among the TiZrHfAl MEA, TiZrHfAlNb0.2, and TiZrHfAlV0.2 HEAs.

KW - Alloy design

KW - Electron microscopy

KW - High entropy alloys

KW - Microstructure

KW - Rapid-solidification

UR - http://www.scopus.com/inward/record.url?scp=85119070701&partnerID=8YFLogxK

U2 - 10.1016/j.matchemphys.2021.125409

DO - 10.1016/j.matchemphys.2021.125409

M3 - Article

AN - SCOPUS:85119070701

SN - 0254-0584

VL - 276

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

M1 - 125409

ER -

Design and development of (Ti, Zr, Hf)-Al based medium entropy alloys and high entropy alloys

Abstract

Keywords

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