Alloy design and fabrication of ingots in Cu-Zn-Mn-Ni-Sn high-entropy and Cu-Zn-Mn-Ni medium-entropy brasses
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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DOI：
10.1016/j.matdes.2019.107900
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发表时间：
2019-11-05
影响因子：
8.4
通讯作者：
Semboshi, Satoshi
中科院分区：
文献类型：
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作者：
Nagase, Takeshi;Shibata, Akihiro;Semboshi, Satoshi
设计了Cu-Zn-Mn-Ni-Sn高熵（HE）和Cu-Zn-Mn-Ni中熵（ME）黄铜，并采用金属型铸造工艺制备了铸锭。等原子CuZnMnNi ME黄铜的铸锭显示出由体心立方（BCC）和面心立方（FCC）相组成的枝晶结构。在非等原子CuxZnMnNi（x = 2，3，4）ME黄铜锭中得到单一的FCC相。Sn对CuxZnMnNi（x = 1和2）合金的凝固组织和相组成有显著影响。CuZnMnNiSn0.2HE黄铜锭在XRD图谱中仅显示对应于BCC相的尖锐峰。Sn添加到CuxZnMnNi（x = 1和2）ME黄铜中导致铸锭中的上级机械强度。(C)2019作者爱思唯尔有限公司出版
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. (C) 2019 The Authors. Published by Elsevier Ltd.