Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys
Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys
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DOI：
10.1016/j.actamat.2011.06.041
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发表时间：
2011-09-01
期刊：
影响因子：
9.4
通讯作者：
Yeh, Jien-Wei
中科院分区：
文献类型：
--
作者：
Chuang, Ming-Hao;Tsai, Ming-Hung;Yeh, Jien-Wei
设计了一系列Al、Ti含量不同的Al（x）Co（1.5）CrFeNi（1.5）Ti（y）高熵合金，并对其相组成和显微组织进行了研究。研究了其粘着磨损行为和机理，并与常规耐磨钢SUJ 2和SKH 51进行了对比。Al和Ti的加入量对合金的相组成和显微结构有很大的影响，特别是对η-（Ni，Co）（3）Ti硬质相的数量和形貌有很大的影响。结果表明，Co1.5CrFeNi1.5Ti和Al0.2Co1.5CrFeNi1.5Ti合金的耐磨性比硬度相近的普通耐磨钢提高了一倍以上。这些高熵合金优异的抗氧化性和抗热软化性是其优异耐磨性的主要原因。(C)2011 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
A series of AL(x)Co(1.5)CrFeNi(1.5)Ti(y) high-entropy alloys with different Al and Ti contents were designed, and their phase and microstructure were investigated. The adhesive wear behavior and mechanism were also studied and compared with the conventional wear-resistant steels SUJ2 and SKH51. The amounts of Al and Ti strongly affect the phase and microstructure, particularly the amount and morphology of the hard eta-(Ni, Co)(3)Ti phase. It was found that the wear resistance of the Co1.5CrFeNi1.5Ti and Al0.2Co1.5CrFeNi1.5Ti alloys is at least two times better than that of conventional wear-resistant steels with similar hardness. The excellent anti-oxidation property and resistance to thermal softening in these high-entropy alloys are proposed to be the main reasons for the outstanding wear resistance. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.