Effect of Interstitial Elements on the Toughness of Ferritic Stainless Steel Weld

Won Bae Lee; Jeong Kil Kim; Joon Sik Park; In Su Woo; Jong Bong Lee

doi:10.4028/www.scientific.net/MSF.580-582.45

Paper Titles

Effect of Post Weld Heat Treatment on the Interface Microstructure of Explosively Welded Titanium/Stainless Steel Composite Clad
p.29

Observation of Nucleation and Growth of Acicular Ferrite in HSLA Steel Weld-Metal
p.33

Analysis of Weld Defects in Offshore Structural H Beams
p.37

Metallurgical Investigations of Laser Welding of AISI 304 Stainless Steel
p.41

Effect of Interstitial Elements on the Toughness of Ferritic Stainless Steel Weld
p.45

Development of Evaluation Method for Solidification Cracking Susceptibility of Inconel600/SUS347 Dissimilar Laser Weld Metal by In-Situ Observation
p.49

Micro Flash Welding of Super Duplex Stainless Steel with Zr Metallic Glass Insert
p.53

Effect of Chemical Composition of Welding Wire and Low Temperature Steel Plate on the Weld Properties Made by SAW
p.57

Weldability of Zinc Coated Steel Sheet by Plasma Arc Welding
p.61

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Effect of Interstitial Elements on the Toughness of Ferritic Stainless Steel Weld

Abstract:

In this study, the toughness of 11Cr ferritic stainless steel weld was evaluated by DBTT (Ductile-Brittle-Transition-Temperature) with the interstitial elements level. DBTT of the weld increased with increasing interstitial level due to the formation of martensite phase and solidsolution strengthening. Interstitial elements level should be limited by the adoption of back shielding gas during welding process because increased C+N level detrimentally affects the toughness of ferritic stainless weld. Adoption of Ar as back shielding gas lowered N content in the weld.