Microstructure of welded austenitic stainless steel after annealing at 900°C (CROSBI ID 590732)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kožuh, Stjepan ; Gojić, Mirko ; Ivanić, Ivana ; Kosec, Borut
engleski
Microstructure of welded austenitic stainless steel after annealing at 900°C
In this work the results of microstructure analysis for welded sheet from austenitic stainless steel AISI 316L before and after annealing at 900 °C/2 hours are shown. Steel sheet dimensions 500x200x15 mm is prepared in the form of V-join. The welding was carried out with shielded metal arc welding (SMAW) technique. For welding was used rutile electrode Böhler FOX SAS-4A. Analysis of weld joint microstructure consisted of a microscopic examination, phase identification and a measurement of the ferrite content using a ferritoscope. Microscopic examination was performed with optical and scanning electron microscopy (equipped with energy dispersive spectroscopy - EDS). For the phase identification of microstructural constituents the XRD analysis was used. Before annealing the microstructure of the base material consisted of 96.6% austenite and 3.4% ferrite, while ferrite content in weld metal was 14.3%. The ferrite content decreased after annealing at 900 °C. After annealing, the content of ferrite in base material was 0.7 (decomposition ratio 79.4%) while in weld metal was 0.5 (decomposition ratio 96.5%). After annealing at 900 °C in the microstructure of weld metal was observed the sigma phase particles. The EDS analysis showed that sigma phase particles consist of 22.72 %Cr, 66.65 %Fe, 7.45 %Ni, 2.22 %Mo and 0.96 %Mn.
stainless steel; welding; annealing; microstructure; sigma phase
Rad je u istom obliku tiskan i u časopisu Zavarivanje i zavarene konstrukcije 58 (2013) 4, str. 149-156.
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Podaci o prilogu
1-9.
2012.
objavljeno
Podaci o matičnoj publikaciji
Zbornik radova ZAVARIVANJE 2012 & IRB 2012
Lukić, Branislav ; Radojičić, Dragoljub
Beograd: Društvo za unapređivanje zavarivanja u Srbiji
978-86-82585-10-7
Podaci o skupu
ZAVARIVANJE2012&IRB 2012
predavanje
09.10.2012-12.10.2012
Divčibare, Srbija