Effect of brief thermal aging on stress corrosion cracking susceptibility of LDSS 2101 in the presence of chloride and thiosulphate ions

被引：26
|
作者：
Zanotto, F. [1 ]
Grassi, V. [2 ]
Balbo, A. [2 ]
Monticelli, C. [2 ]
Melandri, C. [3 ]
Zucchi, F. [2 ]
机构：
[1] Univ Ferrara, Terra & AcquaTech Lab, Via Saragat 1, I-44122 Ferrara, Italy
[2] Univ Ferrara, Corros & Met Study Ctr Aldo Dacco, Via G Saragat 4A, I-44122 Ferrara, Italy
[3] ISTEC CNR, Via Granarolo 64, I-48018 Faenza, Italy
来源：
CORROSION SCIENCE | 2018年 / 130卷
关键词：
Stainless steel; Hydrogen embrittlement; Stress corrosion; DUPLEX STAINLESS-STEEL; POTENTIOKINETIC REACTIVATION METHOD; INTERGRANULAR CORROSION; NITROGEN-CONTENT; HYDROGEN EMBRITTLEMENT; MECHANICAL-PROPERTIES; SOUR ENVIRONMENTS; RESIDUAL-STRESS; SIGMA-PHASE; RESISTANCE;
D O I：
10.1016/j.corsci.2017.10.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, the effect of brief aging within the 650-850 degrees 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.
引用
收藏
页码：22 / 30
页数：9
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