Microstructure and Magnetic Characteristics of AlCrCuFeNiTi High-Entropy Alloy Prepared by Mechanical Alloying Followed by Spark Plasma Sintering

The AlCrCuFeNiTi high-entropy alloy was produced by mechanical alloying and consolidated via spark plasma sintering (SPS) method. A series of XRD, TEM, and FE-SEM tests with energy dispersive spectroscopy were conducted to explore the microstructural analysis of the produced alloys. A vibrating sample magnetometer was used to characterize HEA samples’ magnetic properties. After consolidation, the samples were tested for hardness and compressive strength. After 50 h of milling, a solid solution of less than 32 nm grain size was formed, containing a BCC phase. FCC and BCC phases can be detected in the SPS-consolidated sample. The SPS-consolidated sample had an inherent coercivity of 3.13 Oe and a saturation magnetization of 55.4 emu/g. In addition, the SPS-consolidated sample had a yield stress of 2004 MPa, a compressive strength of 2811 MPa, and a Vickers hardness of 684 HV.