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研究了高压容器用Cr Ni Mo钢在空气中与3.5%Na Cl溶液介质中的疲劳裂纹扩展,结果表明,3.5%Na Cl溶液介质的存在加速了Cr Ni Mo钢的裂纹扩展,随着裂纹的进一步扩展,其加速作用越来越不明显。
The fatigue crack growth of Cr Ni Mo steel in high pressure vessel with 3.5% NaCl solution in air was investigated. The results show that the crack growth of Cr Ni Mo steel accelerated with 3.5% NaCl solution, Further expansion, the acceleration effect is less obvious.