(1. 蘭州理工大學(xué) 材料科學(xué)與工程學(xué)院，蘭州 730050；
2. 蘭州理工大學(xué) 機電工程學(xué)院，蘭州 730050)
摘 要: 采用水冷銅坩堝熔煉和銅模吸鑄法制備直徑3mm的(Zr0.55Cu0.3Al0.1Ni0.05)100-xErx (x=0, 0.5, 1, 2, 3, 4, 5)非晶合金，并利用掃描電鏡(SEM)、X射線衍射儀(XRD)和力學(xué)性能測試儀研究Zr55Cu30Al10Ni5非晶合金添加不同Er元素含量的力學(xué)性能變化規(guī)律。結(jié)果表明：隨著Er元素的添加，Zr55Cu30Al10Ni5非晶合金的室溫塑性和斷裂強度表現(xiàn)出先增加后減小的趨勢；其中(Zr0.55Cu0.3Al0.1Ni0.05)98Er2非晶合金具有最高的抗壓強度σbc (2194.4 MPa)、最高的斷裂強度σc (2176.0 MPa)以及最高的室溫塑性εp (14.31%)，其室溫塑性是不添加Er元素的非晶合金室溫塑性的9.3倍，表明添加Er元素有利于提高非晶合金的室溫強度和塑性。
關(guān)鍵字: Zr基非晶合金；Er元素；力學(xué)性能；室溫塑性
（1. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China）
Abstract:The amorphous alloy (Zr0.55Cu0.3Al0.1Ni0.05)100-xErx (x=0, 0.5, 1, 2, 3, 4, 5) with a diameter of 3mm was prepared by water-cooled copper crucible smelting and copper mold aspiration casting. The mechanical properties of the amorphous alloy with Zr55Cu30Al10Ni5 added with different Er elements were studied by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and mechanical properties test. The results show that the plasticity and fracture strength of Zr55Cu30Al10Ni5 amorphous alloy increases first and then decreases with the addition of Er. The composition (Zr0.55Cu0.3Al0.1Ni0.05)98Er2 amorphous alloy has the highest compressive strength σbc (2194.4 MPa), the highest fracture strength σc (2176.0 MPa) and the highest plastic εp (14.31%) at room temperature. The plasticity of the alloy at room temperature is 9.3 times as that of the alloy without Er, indicating that the addition of Er can improve the strength and plasticity at room temperature.
Key words: Zr-based amorphous alloy; Er element; mechanical properties; room temperature plasticity
