Abstract In this paper, the effect of brief aging within the 650–850 °C temperature range on the resistance of lean duplex stainless steel (LDSS) 2101 to stress corrosion cracking (SCC) was discussed. The thermal aging induced a decrease in Vickers microhardness and an increase in alloy ductility. This behaviour was connected to depletion of interstitial nitrogen in austenite. LDSS 2101 was found to suffer SCC in NACE TM-0177 solution, particularly under specific thermal aging and in the presence of thiosulphate ions (S2O32−) at 10−4 and 10−3 M. Crack nucleation and propagation were linked to microstructural variations connected to thermal aging.

中文翻译：

---

在氯离子和硫代硫酸根离子存在下，短暂热老化对 LDSS 2101 应力腐蚀开裂敏感性的影响

摘要 在本文中，讨论了在 650-850 °C 温度范围内短暂时效对贫双相不锈钢 (LDSS) 2101 抗应力腐蚀开裂 (SCC) 的影响。热时效导致维氏显微硬度降低和合金延展性增加。这种行为与奥氏体中间隙氮的消耗有关。LDSS 2101 被发现在 NACE TM-0177 溶液中发生 SCC，特别是在特定的热老化和硫代硫酸根离子 (S2O32-) 的存在下，浓度为 10-4 和 10-3 M。裂纹成核和传播与微观结构变化有关到热老化。