<正> 本文研究温度对16MnRE钢在H_2S饱和水溶液中疲劳扩展速率的影响,是前文的继续。进一步检验以前所得的结果在不同温度下是否仍然正确;并测定腐蚀疲劳裂纹扩展的激活能,了解H_2S饱和水溶液腐蚀环境对16MnRE钢疲劳裂纹扩展影响的实质。 一、实验方法 16MARE钢热轧后,试验前未经热处理。其化学成分(wt-％)为
Three-point bend tests were conducted on the high cycle and high deformation fatigue crack growth rate of steel 16MnRE in aqueous H_2S saturated solution under different temperatures. Their corrosion fatigue activation energies were measured as 9.45 and 9.25 kcal/mol respectively. It may be proposed that the behaviour of corrosion fatigue cracking of steel 16MnRE in the saturated H_2S solution is mainly due to the hydrogen embrittlement and the rate of their crack growth is controlled by the hydrogen atom diffusion in steel.
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