摘要
The microstructure, mechanical properties and magnetic properties of FeCoNiCuTiSi_x(x=0, 0.05, 0.1, 0.2, 0.4 and 0.5) highentropy alloys were studied in detail in the present paper. The crystal structure changes from FCC+Laves to FCC+BCC+Laves phases, as the Si content increases. Cu is more segregated with the increase in Si content, which can be explained from a thermodynamic point of view. The FeCoNiCuTi high-entropy alloy has good compression mechanical properties, and the fracture strength, fracture strain, and Vickers hardness are 1584.2 MPa, 3.3% and 483.2 HV, respectively. However, the plasticity of the alloy decreases slightly as the Si content increases. The highest fracture strength obtained in this study is 1841.7 MPa at x=0.1.
The microstructure, mechanical properties and magnetic properties of FeCoNiCuTiSi_x(x=0, 0.05, 0.1, 0.2, 0.4 and 0.5) highentropy alloys were studied in detail in the present paper. The crystal structure changes from FCC+Laves to FCC+BCC+Laves phases, as the Si content increases. Cu is more segregated with the increase in Si content, which can be explained from a thermodynamic point of view. The FeCoNiCuTi high-entropy alloy has good compression mechanical properties, and the fracture strength, fracture strain, and Vickers hardness are 1584.2 MPa, 3.3% and 483.2 HV, respectively. However, the plasticity of the alloy decreases slightly as the Si content increases. The highest fracture strength obtained in this study is 1841.7 MPa at x=0.1.
基金
supported by the National Natural Science Foundation of China(Grant Nos.51771044,51871042)
the Scientific and Technological Research Projects of Colleges and Universities in Hebei Province(Grant No.ZD2015213)
