在應力引發的結構鬆弛及fictive stress的觀念下,Zr55Al10Ni5Cu30非晶合金非線性黏彈性行爲已經從實驗觀察友埋論推導下證實,且理論所得之數據與實驗結果一致。在複合步驟的測試下,非線性黏彈性的結構改變可直接fictive stress、表示。另外,此理論模式可清楚顯現從線性到非線性黏彈性轉換發生的臨界條件。
Nonlinear viscoelastic behaviors of a Zr55Al10Ni5Cu30 glassy alloy are investigated experimentally and by theoretical modeling, based on the hypothesis of stress-induced structural relaxation and concept of a fictive stress. The model calculation curves agree well quantitatively with the experimental results. Structural changes of the nonlinear viscoelasticity during complex-step tests are expressed directly by the fictive stress. In addition, the critical condition at which the transition from the linear to the nonlinear viscoelasticity occurs is clarified with this model.