scholarly journals Effect of Chemical Compositions on Properties of Root Bead Surface in TIG Arc Welding. Effect of Chemical Compositions on Weldability in Fabrication in High Alloyed Steel. Report IV.

2001 ◽  
Vol 19 (4) ◽  
pp. 610-619
Author(s):  
Hiroyuki HIRATA ◽  
Kazuhiro OGAWA ◽  
Takao TAKA ◽  
Hisashi IKESAKI
Keyword(s):  
Arc Welding ◽  
Alloyed Steel ◽  
Chemical Compositions ◽  
Bead Surface ◽  
High Alloyed Steel

Effects of Chemical Compositions of Welding Rods on J-R Fracture Resistances and Tensile Properties of Type 347 Welds

2007 ◽  
Vol 539-543 ◽  
pp. 4105-4110
Author(s):  
Ji Hyun Yoon ◽  
Bong Sang Lee ◽  
Eui Pak Yoon
Keyword(s):  
Tensile Properties ◽  
Arc Welding ◽  
Fracture Resistance ◽  
Chemical Compositions ◽  
High Fracture ◽  
Carbon And Nitrogen ◽  
Gas Tungsten Arc ◽  
Weld Metals ◽  
Δ Ferrite ◽  
Nitrogen Contents

The objective of this investigation was to correlate the chemical composition of welding rods for gas tungsten arc welding with the fracture resistance and tensile properties of type 347 welds through the systematic tests and microstructural analyses. Five weld metals which differed in contents of carbon, nitrogen and niobium each other and a high δ-ferrite containing weld metal were deposited by the six different welding rods. J-R fracture resistance and tensile properties were evaluated for the type 347 welds. The microstructural examinations were performed to relate key microstructural features to mechanical properties. It was found that the contents of Nb(C,N) precipitates in type 347 welds were determined by the mixed function of carbon and nitrogen and niobium contents in welding rods. The strengths of type 347 welds were in direct proportion to the contents of Nb(C,N) and J-R fracture resistances were inversely proportional to the contents of Nb(C,N). It was concluded that the type 347 weld with high fracture resistance and adequate strength was obtainable by controlling the sum of carbon and nitrogen contents near 0.1wt% and a limitation of the carbon content below 0.04 wt% in welding rod.

scholarly journals Titanium and Stainless Steel MIG LSC Welding

2019 ◽  
Vol 22 (2) ◽  
pp. 56-59
Author(s):  
Nela Poláková ◽  
Petr Dostál
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Arc Welding ◽  
Galvanic Corrosion ◽  
Welding Process ◽  
Protective Atmosphere ◽  
Metallographic Analysis ◽  
Chemical Compositions ◽  
Additional Material ◽  
Welding Method

Abstract This paper deals with the issue of welding two different materials – titanium and stainless steel (UNS N50400 + X5CrNi 18-10). These two materials have completely different chemical compositions and mechanical properties; therefore, process of their mutual welding is complicated. Melting temperature of both materials is also different. An innovative MIG LSC arc welding method with an additional material has been selected for this purpose. A protective atmosphere was used in order to avoid galvanic corrosion of materials that would preclude the welding process. Aforementioned atmosphere contained 100% Ar. The MIG LSC welding method was designed by Fronius. Presented experiment compares utilization of following 4 different electrodes (additional material) for the welding of titanium and stainless steel: Ti, Fe, corrosion-resistant Fe and CuSi3 electrode. Tensile test was utilized for evaluation of weldment mechanical properties. Measured results were supplemented with a metallographic analysis snapshot and tensile diagram.

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