Effect of high magnetic field assisted heat treatment on microstructure and properties of AlCoCrCuFeNi high-entropy alloy

• DOI: 10.1016/j.matlet.2021.130540
• Publication Date: 2021-07-27T07:52:58Z
• Authors: Ni Deng; Jun Wang; Jiaxiang Wang; Yixuan He; Eric Beaugnon; Jinshan Li
• Keywords: Volume fraction; Elongation; Magnetic shape-memory alloy; Saturation (graph theory); High-Entropy Alloys

Abstract High magnetic field assisted heat treatment process was used to regulate the microstructure and properties of AlCoCrCuFeNi high-entropy alloy. Results show that applying magnetic field can refine the FeCoCr-rich phase and suppress the large regional segregation of Cu-rich phase. The strength of the alloy increases greatly from 1482 MPa to 1795 MPa and the elongation also increases from 23% to 27%. The saturation magnetization is depressed after the magnetic field is applied. These variations are attributed to the decrease of Cu-rich phase segregation, grain refinement, and also the slightly decreased volume fraction of BCC phase upon applying high magnetic field.