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Experimental and modelling study of the effect of tempering on the susceptibility to environment-assisted cracking of AISI 420 martensitic stainless steel

  • Krishnan Hariramabadran Anantha
  • , Cem Örnek
  • , Sebastian Ejnermark
  • , Anders Thuvander
  • , Anna Medvedeva
  • , Johnny Sjöström
  • , Jinshan Pan*
  • *Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

14 Atıf (Scopus)

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 dilİngilizce
Sayfa (başlangıç-bitiş)83-93
Sayfa sayısı11
DergiCorrosion Science
Hacim148
DOI'lar
Yayın durumuYayınlandı - Mar 2019
Harici olarak yayınlandıEvet

Bibliyografik not

Publisher Copyright:
© 2018 Elsevier Ltd

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