Effects of Chemical Composition and Welding Process on Fracture Resistance of Type 347 Stainless Steel Weld

2007 ◽  
pp. 1970-1973
Author(s):  
Ji Hyun Yoon ◽  
Bong Sang Lee ◽  
Eui Pak Yoon
Keyword(s):  
Stainless Steel ◽  
Chemical Composition ◽  
Fracture Resistance ◽  
Welding Process ◽  
Steel Weld ◽  
Stainless Steel Weld

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

2008 ◽  
Vol 580-582 ◽  
pp. 45-48 ◽  
Author(s):  
Won Bae Lee ◽  
Jeong Kil Kim ◽  
Joon Sik Park ◽  
In Su Woo ◽  
Jong Bong Lee
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Welding Process ◽  
Martensite Phase ◽  
Steel Weld ◽  
Shielding Gas ◽  
N Level ◽  
Stainless Steel Weld ◽  
Ductile Brittle Transition Temperature ◽  
Interstitial Elements

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.

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