本文研究了力学因素对0Cr18Ni9Ti奥氏体不锈钢在MgCl_2水溶液中应力腐蚀(SCC)和腐蚀疲劳(CF)交互作用的影响。研究了应力腐蚀疲劳(SCF)在裂纹扩展规律及断口形貌上的特征。结果表明:任何促使裂尖应变速率提高的力学变量,都有可能使SCF断口形貌发生穿晶型向沿晶型的转化。
Studies were carried out of the effect of mechanical parameters on theinteraction between stress corrosion cracking and corrosion fatigue, as well as of the featureof stress corrosion fatigue (SCF) on crack growth rate and fracture surface of 0Cr18Ni9Tisteel in boiling MgCl_2 solution. Any parameter, that increased the strain rate at crack tip,tends to promote the change of SCF from transgranular to intergranular mode.
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