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用铜模吸铸法制备了Zr(65-x)Cu17.5Ni10Al7.5Fex(x=0,1,2,3,4,5,at%)块体合金,利用X射线衍射仪(XRD)、透射电镜(TEM)、同步热分析(DSC)、万能试验机和扫描电镜(SEM)研究了Fe对Zr基合金的非晶形成能力、热稳定性及力学性能的影响。结果表明:适量添加Fe元素有利于提高该合金的非晶形成能力和热稳定性,当Fe含量为x=2时,其内部结构为完全非晶结构,并且此成分具有较高的GFA和热稳定性(ΔTx=58K)。Fe元素的适量加入也有利于提高该合金的强度和塑性,其中x=2的块体非晶合金的抗压强度σf、断裂应变εf和塑性应变εp分别高达2338MPa、12.4%和2.0%。
The bulk alloys of Zr (65-x) Cu17.5Ni10Al7.5Fex (x = 0,1,2,3,4,5, at%) were prepared by copper mold suction casting. XRD, The effects of Fe on the amorphous formability, thermal stability and mechanical properties of Zr-based alloys were investigated by transmission electron microscopy (TEM), simultaneous thermal analysis (DSC), universal testing machine and scanning electron microscope (SEM) The results show that proper addition of Fe can improve the amorphous and thermal stability of the alloy. When the content of Fe is x = 2, its internal structure is completely amorphous, and its composition has high GFA and heat Stability (ΔTx = 58K). The proper addition of Fe also helps to improve the strength and ductility of the alloy. The compressive strength σf, fracture strain εf and plastic strain εp of x = 2 bulk amorphous alloy are as high as 2338MPa, 12.4% and 2.0% respectively.