研究了室温完全反向应力控制条件下块状非晶合金Zr41.25Ti13.75Ni10Cu12.5Be22.5的低周疲劳行为,结果表明,完全非晶和含晶态相非晶合金均表现为循环稳定直至断裂.完全非晶合金的寿命远高于含晶态相非晶合金.通过试样断裂表面及外表面SEM观察,解释了应变稳定循环产生的机制.两种非晶合金的疲劳断口均可观察到裂纹的萌生、扩展及过载断裂区.含晶态相非晶中的晶态相没有起到阻碍裂纹扩展的作用,而是作为裂纹萌生点或疏松.
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