Effect of Electromagnetic Field on Microstructure and Properties of Bulk AlCrFeNiMo0.2 High-Entropy Alloy
Effect of Electromagnetic Field on Microstructure and Properties of Bulk AlCrFeNiMo0.2 High-Entropy Alloy
复制标题
电磁场对大块AlCrFeNiMo0.2高熵合金组织与性能的影响
DOI：
10.1007/s11665-015-1727-3
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发表时间：
2015-11-01
影响因子：
2.3
通讯作者：
Li, Tingju
中科院分区：
文献类型：
--
作者：
Dong, Yong;Jiang, Li;Li, Tingju
采用真空中频感应熔炼法成功制备了AlCrFeNiMo 0. 2块体高熵合金。研究了电磁场对合金组织和性能的影响。该合金具有B2和BCC的混合结构，电磁场处理没有改变相类型。显微组织呈现典型的片状共晶团和棒状共晶团结构。这些共晶团组织由AlNi型金属间化合物和FeCr型固溶体构成。随着电磁场强度的增大，硬度增大，而合金的压缩断裂强度和断裂应变先增大后减小。在15mT电磁场作用下，合金的断裂强度最大为2282.3MPa，屈服强度最大为1160.5MPa，断裂应变最大为0.29。该合金具有典型的铁磁行为，均匀化的片层共晶团组织显著降低了比饱和磁化强度。
The bulk AlCrFeNiMo0.2 high-entropy alloy was successfully prepared by vacuum medium frequency induction melting. The effects of electromagnetic field on microstructure and properties were investigated. The alloy possessed a mixed structure of B2 and BCC, and the phase types were not changed by the electromagnetic field treatment. The microstructure exhibited typical lamellar eutectic cell and rod eutectic cell structures. These eutectic cell structures were constituted by the AlNi-type intermetallic compound and the FeCr-type solid solution. With the increase of electromagnetic field intensity, the hardness increases, while the compressive fracture strength and fracture strain of the alloy first increases and then decreases. The alloy with 15 mT electromagnetic field has the largest fracture strength 2282.3 MPa, yield strength 1160.5 MPa, and fracture strain 0.29. The alloy shows typical ferromagnetic behavior, and the homogenized lamellar eutectic cell microstructure significantly decreased the specific saturation magnetizations.