Published September 2016 | Version v1
Journal article Metadata-only

Sulphide stress cracking behaviour of the dissimilar metal welded joint of X60 pipeline steel and Inconel 625 alloy

Creators

  • 1. College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014 (China)
  • 2. Department of materials science and Engineering, China University of Petroleum, Beijing 102249 (China)
  • 3. Institute of Process Equipment, Zhejiang University, Hangzhou 310027 (China)
  • 4. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014 (China)

Description

Highlights: • The closer to the fusion boundary, the lower hardness in the dilution zone. • Dissimilar welding joint shows a high SSC susceptibility. • Crack initiation is caused by the asymmetric stress concentration. • Hydrogen-enhanced localised plasticity affects the crack propagation direction. • Anodic dissolution prevents crack blunting. - Abstract: The sulphide stress cracking (SSC) behaviour of the dissimilar metal welded joint of X60 pipeline steel and Inconel 625 alloy in H2S environment was investigated using constant load testing, weight loss testing and finite element analysis. The dissimilar welded joint shows high SSC susceptibility, and the asymmetric stress concentration after corrosion is the prerequisite for crack initiation. Anodic dissolution prevents crack blunting, whereas hydrogen embrittlement increases the crack propagation rate and affects SSC to propagate along the fusion boundary.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.corsci.2016.04.044

Additional details

Identifiers

DOI
10.1016/j.corsci.2016.04.044;
PII
S0010-938X(16)30195-0;

Publishing Information

Journal Title
Corrosion Science
Journal Volume
110
Journal Page Range
p. 242-252
ISSN
0010-938X
CODEN
CRRSAA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
48012551
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CONCENTRATION RATIO; CRACK PROPAGATION; CRACKING; CRACKS; DILUTION; FINITE ELEMENT METHOD; HARDNESS; HYDROGEN; HYDROGEN EMBRITTLEMENT; HYDROGEN SULFIDES; INCONEL 625; LOW ALLOY STEELS; METALS; PIPELINES; PLASTICITY; STRESS CORROSION; STRESSES; WELDED JOINTS; WELDING
Descriptors DEC
ALLOY-NI61CR22MO9NB4FE3; ALLOYS; ALUMINIUM ADDITIONS; ALUMINIUM ALLOYS; CALCULATION METHODS; CARBON ADDITIONS; CHALCOGENIDES; CHEMICAL REACTIONS; CHROMIUM ALLOYS; CORROSION; CORROSION RESISTANT ALLOYS; DECOMPOSITION; DIMENSIONLESS NUMBERS; ELEMENTS; EMBRITTLEMENT; FABRICATION; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HYDROGEN COMPOUNDS; INCONEL ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; JOINING; JOINTS; MATERIALS; MATHEMATICAL SOLUTIONS; MECHANICAL PROPERTIES; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIOBIUM ALLOYS; NONMETALS; NUMERICAL SOLUTION; PYROLYSIS; STEELS; SULFIDES; SULFUR COMPOUNDS; THERMOCHEMICAL PROCESSES; TITANIUM ADDITIONS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.