Fabrication and mechanical properties of AlCoNiCrFe high-entropy alloy particle reinforced Cu matrix composites
Fabrication and mechanical properties of AlCoNiCrFe high-entropy alloy particle reinforced Cu matrix composites
复制标题
AlCoNiCrFe高熵合金颗粒增强Cu基复合材料的制备及力学性能
DOI：
10.1016/j.jallcom.2015.07.125
复制
发表时间：
2015-11-15
影响因子：
6.2
通讯作者：
Peng, Yuli
中科院分区：
文献类型：
--
作者：
Chen, Jian;Niu, Pengyun;Peng, Yuli
采用机械合金化法制备了AlCoNiCrFe高熵合金，并采用粉末冶金法制备了AlCoNiCrFe高熵合金增强Cu基复合材料。利用X射线衍射仪和扫描电镜对合金粉末的相组成和形貌进行了表征，利用扫描电镜和透射电镜对铜基复合材料的微观组织进行了表征，并进行了压缩试验。结果表明，球磨24 h后，可形成AlCoNiCrFe高熵合金。在烧结过程中，AlCoNiCrFe高熵合金中没有晶粒长大，也没有金属间化合物相存在。压缩试验表明，AlCoNiCrFe高熵合金比非晶合金具有更好的强化效果，其增强铜基复合材料的屈服强度接近基于等应变假设的Voigt模型预测值。(C)2015 Elsevier B.V.版权所有。
The AlCoNiCrFe high-entropy alloy was prepared by mechanical alloying and the AlCoNiCrFe high-entropy alloy reinforced Cu matrix composites were subsequently fabricated by powder metallurgy. The phase constituents and morphology of the alloying powders were characterized by X-ray diffractometer and scanning electron microscope, the microstructures of the Cu base composites were characterized by scanning electron microscope and transmission electron microscope, and the compression tests were made as well. The results show that the AlCoNiCrFe high-entropy alloy can form after milling for 24 h. During sintering process, no grain growth occurs and no intermetallic phases present in the AlCoNiCrFe high-entropy alloy in the Cu base composite. Compression tests show that the AlCoNiCrFe high-entropy alloy has a better strengthening effect than metallic glasses and the yield strength of the Cu matrix composite reinforced with the AlCoNiCrFe high-entropy alloy is close to the value predicted by the Voigt model based on the equal strain assumption. (C) 2015 Elsevier B.V. All rights reserved.