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用压痕法测量退火前的Ａｌ_（６５）Ｃｕ_（２０）Ｃｏ_（１５）十边形准晶体的室温Ｖｉｃｋｅｒｓ硬度为１１ＧＰａ，利用压痕裂纹长度算出了断裂韧性Ｋ_（１ｃ）约为１．０ＭＰａ·，抗拉强度为４５０ＭＰａ．在８５０℃退火３６ｈ后，显微硬度值、断裂韧性无明显变化，但抗拉强度提高到５５０ＭＰａ．
The Vickers hardness of Al_ (65) Cu_ (20) Co_ (15) decagonal quasicrystal before annealing was measured by indentation method to be 11 GPa. The fracture toughness K_ (1c) was calculated to be 1.0 MPa ·, Tensile strength of 450MPa. After annealed at 850 ℃ for 36h, the microhardness and fracture toughness did not change obviously, but the tensile strength increased to 550MPa.