Solidification behavior of austenitic stainless steel filler metals

Solidification behavior of austenitic stainless steel filler metals [electronic resource]

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Thermal analysis and interrupted solidification experiments on selected austenitic stainless steel filler metals provided an understanding of the solidification behavior of austenitic stainless steel welds. The sequences of phase separations found were for type 308 stainless steel filler metal, L +...

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Bibliographic Details
Online Access: Online Access
Corporate Author: Oak Ridge National Laboratory (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Oak Ridge, Tenn. : Oak Ridge, Tenn. : Oak Ridge National Laboratory. ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1980.
Subjects:
Chemical Composition.
Filler Metals.
Nickel Alloys.
Stainless Steel-308.
Chromium Steels.
Alloys.
Heat Resistant Materials.
Microscopy.
Steels.
Iron Base Alloys.
Heat Resisting Alloys.
Materials.
Austenitic Steels.
Crystal Structure.
Thermal Analysis.
Solidification.
Electron Microscopy.
Stainless Steels.
Chromium-nickel Steels.
Chromium Alloys.
Stainless Steel-310.
Transmission Electron Microscopy.
Microstructure.
Phase Transformations.
Corrosion Resistant Alloys.
Iron Alloys.
Materials Science.
Description
Summary:Thermal analysis and interrupted solidification experiments on selected austenitic stainless steel filler metals provided an understanding of the solidification behavior of austenitic stainless steel welds. The sequences of phase separations found were for type 308 stainless steel filler metal, L + L + delta + L + delta + ..gamma.. ..-->.. ..gamma.. + delta, and for type 310 stainless steel filler metal, L ..-->.. L + ..gamma.. ..-->.. ..gamma... In type 308 stainless steel filler metal, ferrite at room temperature was identified as either the untransformed primary delta-ferrite formed during the initial stages of solidification or the residual ferrite after Widmanstaetten austenite precipitation. Microprobe and scanning transmission electron microscope microanalyses revealed that solute extensively redistributes during the transformation of primary delta-ferrite to austenite, leading to enrichment and stabilization of ferrite by chromium. The type 310 stainless steel filler metal investigated solidifies by the primary crystallization of austenite, with the transformation going to completion at the solidus temperature. In our samples residual ferrite resulting from solute segregation was absent at the intercellular or interdendritic regions.
Item Description:Published through SciTech Connect.
02/01/1980.
"ornl/tm-7116"
David, S.A.; Braski, D.N.; Goodwin, G.M.
Physical Description:Pages: 27 : digital, PDF file.

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