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采用微机辅助直流电位法，研究了应力比和频率对ＬＹ１２ＣＺ铝合金在３．５％ＮａＣｌ水溶液中腐蚀疲劳裂纹扩展的影响．结果表明，应力比升高，裂纹扩展速率升高，但频率变化对裂纹扩展速率无显著影响．文中给出了裂纹扩展速率定量表达式
The effect of stress ratio and frequency on the corrosion fatigue crack growth of LY12CZ aluminum alloy in 3.5% NaCl aqueous solution was studied by using computer-aided direct current potential method. The results show that the stress ratio increases and the crack growth rate increases, but the frequency change has no significant effect on the crack growth rate. In this paper, the quantitative expression of crack propagation rate is given