The sensitization behavior of 308 duplex stainless steel welds with lathy ferrite

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:7161497

Menendez, H; Devine, T M

The sensitization behavior of 5 autogenous T.I.G. welds with lathy ferrite microstructure was investigated by isothermally heat treating samples for various lengths of time at 550C and 600C and testing for intergranular corrosion resistance in ASTM-A262E. The welds were found to behave similarly to other welds of similar composition but which had interdendritic or vermicular ferrite. Considering the very large amounts of austenite-ferrite interfacial area present in the lathy ferrite welds, theoretical analysis predicted that such welds should be immune to sensitization. Although the welds were found to be highly resistant to sensitization, they were not immune. Reasons for this discrepancy are discussed.

• OSTI ID: 7161497
• Report Number(s): CONF-870314-
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBON ADDITIONS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
FABRICATION
FERRITE
HEAT TREATMENTS
HIGH TEMPERATURE
INTERGRANULAR CORROSION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
MICROSTRUCTURE
NICKEL ALLOYS
SENSITIVITY
STAINLESS STEEL-308
STAINLESS STEELS
STANDARDS
STEELS
STRUCTURAL CHEMICAL ANALYSIS
WELDED JOINTS
WELDING