Mass transport in the crack solution as the rate-determining step in the crack growth mechanism during corrosion fatigue of steel in saltwater solutions

Journal Article · Sun Jan 01 04:00:00 EST 1995 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

OSTI ID:6590203

Wekken, C.J. van der ^[1]

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1. Delft Univ. of Technology (Netherlands)

The behavior of the effective diffusion coefficient D[sub eff] for the transport of solute species in corrosion fatigue (CF) cracks was investigated by using a triangular CF crack model. Analytical expressions are presented describing D[sub eff] as a function of a characteristic dimensionless parameter. Assuming relatively simple boundary conditions and considering the solute transport in the crack to be rate determining, the expected behavior of the crack growth rate as a function of [Delta]K and the frequency during constant load amplitude CF testing for steel in 3.5 pct NaCl solutions could be calculated.

• OSTI ID: 6590203
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 26:1; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALLOYS
ANALYTICAL SOLUTION
CHLORIDES
CHLORINE COMPOUNDS
CORROSION FATIGUE
CORROSIVE EFFECTS
CRACK PROPAGATION
FATIGUE
HALIDES
HALOGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
SODIUM CHLORIDES
SODIUM COMPOUNDS
STEELS