Solidification behavior of type 308 stainless steel filler metal

Conference · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6868235

David, S A; Goodwin, G M

A series of experiments that combined thermal analysis and interrupted solidification was carried out to understand the solidification behavior of type 308 stainless steel weld metal. Results indicate the following sequence of phase separations for the alloy investigated: L ..-->.. L + delta ..-->.. L + delta + ..gamma.. ..-->.. ..gamma.. + delta. Ferrite observed at room temperature was identified as the untransformed primary delta-ferrite that formed during the initial stages of solidification. The mode of freezing and the extent of solid-state diffusion both control the amount and distribution of ferrite. Microstructural and microprobe analyses indicated both extensive solid-state transformation and solute redistribution during solidification and cooling from the nonequilibrium solidus to room temperature.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6868235
• Report Number(s): CONF-780834-5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COOLING
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALLIZATION
DIFFUSION
FABRICATION
FILLER METALS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MICROSTRUCTURE
NICKEL ALLOYS
PHASE TRANSFORMATIONS
STAINLESS STEEL-308
STAINLESS STEELS
STEELS
WELDING