本文研究了稳定奥氏体合金(4J29)在中性3.5%NaCl 水溶液中的应力腐蚀特征曲线、起裂方式以及扩展特征;研究了此合金在动态充氢条件下的氢致延滞断裂特性。通过对比分析以及管型试样应力腐蚀结果,提出了此合金在含 Cl~-水溶液中的应力腐蚀是以氢致开裂为主的观点。本文通过对比实验还研究了整体介质中 H~+浓度以及 Cl~-浓度对4J29合金应力腐蚀的影响.
The characteristic curve of SCC as well as the nucleation and propagation of cracking of stable austenitic alloy(4J29)in aqueous solution of 3.5% NaCl were investigated.Furthermore,the behavior of hydrogen-induced delayed fracture of this alloy was studied in hydrogen charging condition.The similarity between the behavior of SCC and the hydrogen-induced delayed fracture indica- ted that the nature of SCC of the alloy in aqueous media with Cl~- was hydrogen- induced cracking. The effect of CH~+ and H~+ concentration on SCC of the 4329 alloy was also included in this study.
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