【摘要】 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更多还原

【Abstract】 This paper studies the effects of stress ratio and frequency on corrosion fatigue crack propagation for LY12CZ aluminum alloy in 3.5%NaCl solution by computer aided direct current potential method.The results show that the crack propagation rate rises when the stress ratio rises,but the change of frequercy has little effect on the crack propagation rate.This paper also gives the quantitative formula for the crack propagation rate.更多还原