Microstructures and mechanical properties of 30Cr-4Mo ferritic stainless steel joints produced by double-pulsed gas metal arc welding

2015 ◽  
Vol 80 (9-12) ◽  
pp. 1975-1983 ◽  
Author(s):  
Heng Zhang ◽  
Shengsun Hu ◽  
Junqi Shen ◽  
Li Ma ◽  
Fengliang Yin
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Metal Arc Welding ◽  
Microstructures And Mechanical Properties ◽  
Steel Joints

Effect of Gas Metal Arc Welding on Magnetic Response of Ferritic Stainless Steel

2020 ◽  
Vol 45 (2) ◽  
pp. 1293-1303
Author(s):  
Sanjay Kumar Gupta ◽  
Avinash Ravi Raja ◽  
Meghanshu Vashista ◽  
Mohd Zaheer Khan Yusufzai
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Magnetic Response ◽  
Metal Arc Welding

Mechanical Properties of Gas Metal Arc Weldments of AISI 304 Stainless Steel Using Different Shielding Gas Compositions

2021 ◽  
Vol 54 ◽  
pp. 1-11
Author(s):  
Augusta Ijeoma Ekpemogu ◽  
Olamide Emmanuel Ariwoola ◽  
Akeem Abiodun Rasheed ◽  
Oladipupo Akinleye Ogundele ◽  
Taiwo Ebenezer Abioye ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
304 Stainless Steel ◽  
Gas Composition ◽  
Shielding Gas ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Metal Arc Welding

In this work, gas metal arc welding of AISI 304 stainless steel at varying compositions of argon-CO2 shielding environment was performed using an established optimum parametric combination. Thereafter, investigations on the microstructure of the welded joints and mechanical properties of the weldments were carried out. Weldments of excellent surface quality that are void of spatters and pores were obtained when the shielding gas composition (wt.%) range is between 100% argon and 75% argon - 25% CO2. Increasing percentage composition of CO2 beyond 25% resulted in irregular bead formation characterized with spatters and pores. The hardness of the welded joint became significantly high as the CO2 composition in the shielding gas increased. The highest value of 310 HV was obtained when the shielding gas composition was 5% argon- 95% CO2. The least (220 HV) was obtained when the shielding gas was 100% argon. High ultimate tensile strength (596 - 378 MPa) was achieved when the shielding gas composition range is between 100% argon and 75% argon-25% CO2. The UTS dropped significantly as the CO2 composition in the shielding gas increased beyond 25%. It decreased from 336 MPa at 70% argon-30% CO2 shielding gas composition to 133 MPa when 100% CO2 was utilized as the shielding gas. At the end, the effects of the CO2 addition and suitable composition of CO2 addition to argon shielding environment during GMAW of AISI 304 stainless steel have been established.

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