Corrosion Cracking of Steels of Various Strengths at a Constant Crack Opening
- Authors: Grinevich A.V.1, Yakovlev N.O.1, Skripachev S.Y.1, Nuzhnyi G.A.1
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Affiliations:
- All-Russia Institute of Aviation Materials
- Issue: Vol 2019, No 4 (2019)
- Pages: 453-457
- Section: Diagnostics and Mechanical Test Techniques
- URL: https://journals.rcsi.science/0036-0295/article/view/173219
- DOI: https://doi.org/10.1134/S0036029519040141
- ID: 173219
Cite item
Abstract
Earlier, we proposed a technique to estimate the fracture toughness of a metallic material. It differs from standard techniques in the determination of the operating stresses in an improved compact specimen with an edge crack. Using this technique, we determine the corrosion damage resistance of martensitic 30KhGSA (σu ≈ 1080 MPa) and VKS-9n (σu ≈ 2010 MPa) steels under full-scale and laboratory conditions and analyze their corrosion fracture kinetics. The corrosion fractures of the steels with different strength levels are found to have different characters: the 30KhGSA steel is likely to undergo anodic dissolution at the crack tip, and the high-strength VKS-9 steel undergoes hydrogen embrittlement.
About the authors
A. V. Grinevich
All-Russia Institute of Aviation Materials
Author for correspondence.
Email: viam660@yandex.ru
Russian Federation, Moscow, 105005
N. O. Yakovlev
All-Russia Institute of Aviation Materials
Email: viam660@yandex.ru
Russian Federation, Moscow, 105005
S. Yu. Skripachev
All-Russia Institute of Aviation Materials
Email: viam660@yandex.ru
Russian Federation, Moscow, 105005
G. A. Nuzhnyi
All-Russia Institute of Aviation Materials
Email: viam660@yandex.ru
Russian Federation, Moscow, 105005