Özet
The resistance to environment-assisted cracking (EAC) of AISI 420 martensitic stainless steel (MSS) was investigated in 0.3 M NaCl solution (room temperature) at constant loads for 30 days. The steel tempered at 250 °C was superior to the 500 °C-temper, which showed corrosion pits favouring cracking. The fracture surface showed faceted grains, cleavage, striations, and inter- and transgranular cracks, suggesting a mixed stress corrosion cracking (SCC) and hydrogen embrittlement (HE) mechanism as the cause for EAC. Finite element modelling (FEM) indicated strain/stress localization at the mouth of deep pits and at the wall of shallow pits, displaying the favoured locations for pit-to-crack transition.
| Orijinal dil | İngilizce |
|---|---|
| Sayfa (başlangıç-bitiş) | 83-93 |
| Sayfa sayısı | 11 |
| Dergi | Corrosion Science |
| Hacim | 148 |
| DOI'lar | |
| Yayın durumu | Yayınlandı - Mar 2019 |
| Harici olarak yayınlandı | Evet |
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Publisher Copyright:© 2018 Elsevier Ltd
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