Measurement and modeling of sensitization development in stainless steels as a function of thermomechanical processing

Technical Report · Sun Nov 01 00:00:00 EST 1992

OSTI ID:6924293

Atteridge, D G; Simmons, J W; Li, M ^[1]; Bruemmer, S M ^[2]

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1. Oregon Graduate Inst. of Science and Technology, Beaverton, OR (United States). Dept. of Materials Science and Engineering
2. Pacific Northwest Lab., Richland, WA (United States)

An analytical model has been developed for predicting thermomechanical effects on the development of grain boundary chromium depletion in austenitic stainless steel as a first step in predicting intergranular stress corrosion cracking susceptibility. Model development and validation is based on sensitization development analysis of over 30 Type 316 and 304 stainless steel heats. The data base included analysis of deformation effects on resultant sensitization development. Continuous cooling sensitization behavior is examined and modeled with and without strain. Gas tungsten arc girth pipe weldments are also characterized by experimental measurements of heat affected zone temperatures, strains and sensitization during/after each pass; pass by pass thermal histories are also predicted. The model is then used to assess pipe chemistry changes on chromium depletion changes.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (United States). Div. of Engineering; Oregon Graduate Inst. of Science and Technology, Beaverton, OR (United States). Dept. of Materials Science and Engineering
• Sponsoring Organization: USNRC; Nuclear Regulatory Commission, Washington, DC (United States)
• OSTI ID: 6924293
• Report Number(s): NUREG/GR-0004; ON: TI93004058
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STAINLESS STEELS
STRESS CORROSION
CHROMIUM
DEFORMATION
GRAIN BOUNDARIES
INTERGRANULAR CORROSION
SEGREGATION
STAINLESS STEEL-304
STAINLESS STEEL-316
THERMAL CYCLING
THERMOMECHANICAL TREATMENTS
ALLOYS
AUSTENITIC STEELS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CHROMIUM-NICKEL-MOLYBDENUM STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
ELEMENTS
FABRICATION
HEAT RESIS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS WORKING
METALS
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
STEEL-CR17NI12MO3
STEEL-CR19NI10
STEELS
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion