0.5MnNi1.5CrNbx（x=0，0.05，0.1，摩爾比）高熵合金，并分析了不同Nb含量對其組織和力學(xué)性能的影響。結(jié)果表明，不含Nb元素的合金具有單相fcc結(jié)構(gòu)，其抗拉強度和斷裂延伸率（即延展性）分別為519 MPa和47%。添加少量的Nb(x=0.05)后出現(xiàn)(200)織構(gòu)和少量Fe2Nb Laves相，合金的延展性增加到55%，并且抗拉強度增加到570 MPa。當(dāng)Nb含量增加到x=0.1時，織構(gòu)減少，而Fe2Nb Laves相增多，抗拉強度和延展性分別為650 MPa和45%。;Fe0.5MnNi1.5CrNbx(x=0, 0.05, 0.1, molar ratio) high-entropy alloys were prepared by vacuum induction melting. The effect of Nb content on the microstructure and mechanical properties of the new alloy was analyzed. The results show that the Nb-free alloy has a single-phase fcc structure, and its tensile strength and elongation to failure (i.e., ductility) are 519 MPa and 47%, respectively. With the addition of Nb (x=0.05), the (200) texture and Fe2Nb Laves phase appear. The ductility of alloy increases to 55%, while the tensile strength increases to 570 MPa. When the molar ratio of Nb increases to 0.1, the texture diminishes, whereas the volume fraction of the Fe2Nb phase is increased. The resultant tensile strength and ductility are 650 MPa and 45%, respectively."/>