应力腐蚀裂纹扩展的研究

THE STUDY OF THE STRESS CORROSION CRACK PROPAGATION

依据非平衡态热力学和非线性断裂力学基本平衡定律,建立了应力腐蚀裂纹扩展的起裂判据、控制方程及失稳条件,研究了介质浓度对应力腐蚀裂纹扩展的影响,并通过慢应变速率实验得到了验证。

Based on the non-equilibrium thermodynamics and the basicbalance laws of the non-linear fracture mechanics, the authors obtainthe stress corrosion cracking criterion, crack propagation rate equationand the condition of non-stationary state.In addition, the authors discussthe process of solution concentrations affecting the stress corrosion crackpropagation, which examined by the slow strain rate tensile test.