本文研究了淬火温度对4330M钢在蒸馏水中的应力腐蚀裂纹扩展速率的影响。
The effect of quenching temperatures on the rate of stress corrosion crack propagation of 4330M steel in distilled water has been investigated.
根据扫描断口形貌和裂纹扩展途径的金相观察，还探讨了在混合溶液中的应力腐蚀机制。
The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction.
随后斑点穿过压缩层继续扩展，剩余应力发生改变，斑点最终导致应力腐蚀裂纹。
The pit then grows through the compressive layer, and the change in residual stress state and the pit geometry initiate stress corrosion cracking.
依据断口扫描形貌和裂纹扩展途径的金相观察，探讨了在混合溶液中应力腐蚀机制。
The stress corrosion mechanism of in mixed solutions is explored based upon metallographic analysis of crack development.
结果表明，该进气管断裂系由于应力腐蚀裂纹失稳扩展所造成。
The results show that the failure of the tube is due to stress corrosion crack propagation.
当腐蚀促进的位错发射和运动达到临界状态时，应力腐蚀裂纹形核和扩展。
Microcracks of SCC initiated when the corrosion-enhanced dislocation emission and motion reached a certain condition.
但是较慢的溶解速率以及相对高的应变速率使得裂纹没有足够时间发生有效扩展，应力腐蚀敏感性仍然较低。
Nevertheless, there are not enough time for the effective growth of the cracks because of slow dissolution rate and relative high strain rate. Therefore, the SCC susceptibilities are also low.
随着阴极电位降低，不断增加的氢影响裂纹萌生和扩展，应力腐蚀敏感性随外加电位的降低而增大。
When the cathodic potential decreases, more and more hydrogen affects the initiation and growth of crack. The SCC susceptibility increases with the decreasing of cathodic potential.
随着阴极电位降低，不断增加的氢影响裂纹萌生和扩展，应力腐蚀敏感性随外加电位的降低而增大。
When the cathodic potential decreases, more and more hydrogen affects the initiation and growth of crack. The SCC susceptibility increases with the decreasing of cathodic potential.
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