具有高非晶形成能力的高熵合金Cu29Zr32Ti15Al5Ni19

Preparation high entropy alloy Cu29Zr32Ti15Al5Ni19 with high glass forming ability

摘要:

用铜模吸铸法成功地合成了由两个固溶体相构成的高熵合金(HEA) Cu₂₉Zr₃₂Ti₁₅Al₅Ni₁₉和相同成分的非晶态合金(HE-BMG)。实验结果表明该成分的高熵合金具有高的非晶形成能力。铸态高熵合金Cu₂₉Zr₃₂Ti₁₅Al₅Ni₁₉的抗压强度为1127MPa。在750℃保温2小时后的Cu₂₉Zr₃₂Ti₁₅Al₅Ni₁₉高熵合金的硬度仍高达826HV。

Abstract:

High entropy alloy (HEA) Cu29Zr32Ti15Al5Ni19 consisting of two solid solution phases and bulk metallic glass (HE-BMG) with the same composition were successfully prepared separately by casting in a copper mold. The result indicates that the alloy has high glass forming ability. The compressive strength of as cast HEA Cu29Zr32Ti15Al5Ni19 is 1127MPa. HEA Cu29Zr32Ti15Al5Ni19 shows good tempering resistance. The hardness of Cu29Zr32Ti15Al5Ni19 remains 826HV after treated at 750℃ for two hours.