Alloy design and fabrication of ingots in Cu-Zn-Mn-Ni-Sn high-entropy and Cu-Zn-Mn-Ni medium-entropy brasses

Takeshi Nagase; Akihiro Shibata; Mitsuaki Matsumuro; Mamoru Takemura; Satoshi Semboshi

doi:10.1016/j.matdes.2019.107900

Alloy design and fabrication of ingots in Cu-Zn-Mn-Ni-Sn high-entropy and Cu-Zn-Mn-Ni medium-entropy brasses

Takeshi Nagase, Akihiro Shibata, Mitsuaki Matsumuro, Mamoru Takemura, Satoshi Semboshi

IMR - Cooperative Research and Development Center for Advanced Materials

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

32 Citations (Scopus)

Abstract

Cu-Zn-Mn-Ni-Sn high-entropy (HE) and Cu-Zn-Mn-Ni medium-entropy (ME) brasses were designed and the ingots were fabricated by conventional casting process via metallic mold casting. The ingots of the equiatomic CuZnMnNi ME brass showed dendrite structures composed of body-centered-cubic (BCC) and face-centered-cubic (FCC) phases. A single FCC phase was obtained in the ingots of non-equiatomic Cu_xZnMnNi (x = 2, 3, and 4) ME brasses. The addition of Sn to Cu_xZnMnNi (x = 1, and 2) ME brasses significantly affected the solidification microstructure and the constituent phases. The ingots of the CuZnMnNiSn_0.2 HE brass showed only sharp peaks corresponding to BCC phase in XRD patterns. The Sn addition to Cu_xZnMnNi (x = 1, and 2) ME brasses led to superior mechanical strength in the ingots.

Original language	English
Article number	107900
Journal	Materials and Design
Volume	181
DOIs	https://doi.org/10.1016/j.matdes.2019.107900
Publication status	Published - 2019 Nov 5

Keywords

High-entropy alloy
Medium-entropy alloy
Metal and alloy
Microstructure
Solidification

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10.1016/j.matdes.2019.107900

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title = "Alloy design and fabrication of ingots in Cu-Zn-Mn-Ni-Sn high-entropy and Cu-Zn-Mn-Ni medium-entropy brasses",

abstract = "Cu-Zn-Mn-Ni-Sn high-entropy (HE) and Cu-Zn-Mn-Ni medium-entropy (ME) brasses were designed and the ingots were fabricated by conventional casting process via metallic mold casting. The ingots of the equiatomic CuZnMnNi ME brass showed dendrite structures composed of body-centered-cubic (BCC) and face-centered-cubic (FCC) phases. A single FCC phase was obtained in the ingots of non-equiatomic CuxZnMnNi (x = 2, 3, and 4) ME brasses. The addition of Sn to CuxZnMnNi (x = 1, and 2) ME brasses significantly affected the solidification microstructure and the constituent phases. The ingots of the CuZnMnNiSn0.2 HE brass showed only sharp peaks corresponding to BCC phase in XRD patterns. The Sn addition to CuxZnMnNi (x = 1, and 2) ME brasses led to superior mechanical strength in the ingots.",

keywords = "High-entropy alloy, Medium-entropy alloy, Metal and alloy, Microstructure, Solidification",

author = "Takeshi Nagase and Akihiro Shibata and Mitsuaki Matsumuro and Mamoru Takemura and Satoshi Semboshi",

note = "Funding Information: This work was partially supported by JSPS KAKENHI [grant number 18K04750 , 19H05172 ] and scientific grants from the Japan Copper and Brass Association . A part of this work was performed under the inter-university cooperative research program of (Proposal No.18G0036) the Cooperative Research and Development Center for Advanced Materials, Institute for materials Research, Tohoku University. The authors are grateful to Mr. I. Narita at Tohoku University for his help with the EPMA measurements. Publisher Copyright: {\textcopyright} 2019 The Authors",

year = "2019",

month = nov,

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doi = "10.1016/j.matdes.2019.107900",

language = "English",

volume = "181",

journal = "Materials and Design",

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T1 - Alloy design and fabrication of ingots in Cu-Zn-Mn-Ni-Sn high-entropy and Cu-Zn-Mn-Ni medium-entropy brasses

AU - Nagase, Takeshi

AU - Shibata, Akihiro

AU - Matsumuro, Mitsuaki

AU - Takemura, Mamoru

AU - Semboshi, Satoshi

N1 - Funding Information: This work was partially supported by JSPS KAKENHI [grant number 18K04750 , 19H05172 ] and scientific grants from the Japan Copper and Brass Association . A part of this work was performed under the inter-university cooperative research program of (Proposal No.18G0036) the Cooperative Research and Development Center for Advanced Materials, Institute for materials Research, Tohoku University. The authors are grateful to Mr. I. Narita at Tohoku University for his help with the EPMA measurements. Publisher Copyright: © 2019 The Authors

PY - 2019/11/5

Y1 - 2019/11/5

N2 - Cu-Zn-Mn-Ni-Sn high-entropy (HE) and Cu-Zn-Mn-Ni medium-entropy (ME) brasses were designed and the ingots were fabricated by conventional casting process via metallic mold casting. The ingots of the equiatomic CuZnMnNi ME brass showed dendrite structures composed of body-centered-cubic (BCC) and face-centered-cubic (FCC) phases. A single FCC phase was obtained in the ingots of non-equiatomic CuxZnMnNi (x = 2, 3, and 4) ME brasses. The addition of Sn to CuxZnMnNi (x = 1, and 2) ME brasses significantly affected the solidification microstructure and the constituent phases. The ingots of the CuZnMnNiSn0.2 HE brass showed only sharp peaks corresponding to BCC phase in XRD patterns. The Sn addition to CuxZnMnNi (x = 1, and 2) ME brasses led to superior mechanical strength in the ingots.

AB - Cu-Zn-Mn-Ni-Sn high-entropy (HE) and Cu-Zn-Mn-Ni medium-entropy (ME) brasses were designed and the ingots were fabricated by conventional casting process via metallic mold casting. The ingots of the equiatomic CuZnMnNi ME brass showed dendrite structures composed of body-centered-cubic (BCC) and face-centered-cubic (FCC) phases. A single FCC phase was obtained in the ingots of non-equiatomic CuxZnMnNi (x = 2, 3, and 4) ME brasses. The addition of Sn to CuxZnMnNi (x = 1, and 2) ME brasses significantly affected the solidification microstructure and the constituent phases. The ingots of the CuZnMnNiSn0.2 HE brass showed only sharp peaks corresponding to BCC phase in XRD patterns. The Sn addition to CuxZnMnNi (x = 1, and 2) ME brasses led to superior mechanical strength in the ingots.

KW - High-entropy alloy

KW - Medium-entropy alloy

KW - Metal and alloy

KW - Microstructure

KW - Solidification

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M1 - 107900

ER -

Alloy design and fabrication of ingots in Cu-Zn-Mn-Ni-Sn high-entropy and Cu-Zn-Mn-Ni medium-entropy brasses

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