Effect of Filler Metal’s Choice on the Mechanical and Corrosion Properties of Gas Tungsten Arc Welded Aisi 304l

2012 ◽  
Vol 622-623 ◽  
pp. 299-303
Author(s):  
Abhishek Babasaheb Ajari ◽  
Hayagreev Raman ◽  
V. Ajay Shri Bhuvanesh ◽  
Manikanta Sriram ◽  
K. Devendranath Ramkumar ◽  
...  
Keyword(s):  
Research Work ◽  
Xrd Analysis ◽  
Filler Materials ◽  
Air Oxidation ◽  
Corrosion Properties ◽  
Aisi 304L ◽  
Gas Tungsten Arc ◽  
Thermogravimetric Data ◽  
Gtaw Process ◽  
Gas Tungsten

In this research work, an attempt has been made to study the weldability of AISI 304L using filler materials ENiCu-7 and ENiCrMo-3 by Gas Tungsten Arc Welding (GTAW) process. Investigations are carried out on the metallurgical and mechanical properties of AISI 304L weldments. Further, cyclic hot corrosion studies are performed on the various zones of the weldment in air oxidation for 50 cycles at 600 °C. Thermogravimetric data is collected at the end of every cycle and the weldments are characterized using XRD analysis.

Effect of Filler Metal’s Choice on the Mechanical and Corrosion Properties of Gas Tungsten Arc Welded AISI 304l

2012 ◽  
Vol 622-623 ◽  
pp. 335-339
Author(s):  
Abhishek Babasaheb Ajari ◽  
Hayagreev Raman ◽  
V. Ajay Shri Bhuvanesh ◽  
Manikanta Sriram ◽  
K. Devendranath Ramkumar ◽  
...  
Keyword(s):  
Research Work ◽  
Xrd Analysis ◽  
Filler Materials ◽  
Air Oxidation ◽  
Corrosion Properties ◽  
Aisi 304L ◽  
Gas Tungsten Arc ◽  
Thermogravimetric Data ◽  
Gtaw Process ◽  
Gas Tungsten

In this research work, an attempt has been made to study the weldability of AISI 304L using filler materials ENiCu-7 and ENiCrMo-3 by Gas Tungsten Arc Welding (GTAW) process. Investigations are carried out on the metallurgical and mechanical properties of AISI 304L weldments. Further, cyclic hot corrosion studies are performed on the various zones of the weldment in air oxidation for 50 cycles at 600 C. Thermogravimetric data is collected at the end of every cycle and the weldments are characterized using XRD analysis.

Influence of Filler Materials on Mechanical and Hot Corrosion Properties of Gas Tungsten Arc Welded AISI 304

2012 ◽  
Vol 185 ◽  
pp. 113-115 ◽  
Author(s):  
R. Mohanraj ◽  
Kumar D. Rajesh ◽  
Kumar M. Yeswanth ◽  
N. Arivazhagan ◽  
Ramkumar K. Devendranath ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Comparative Analysis ◽  
Filler Materials ◽  
Air Oxidation ◽  
Corrosion Properties ◽  
Aisi 304 ◽  
Edax Analysis ◽  
Gas Tungsten Arc ◽  
Mechanical And Corrosion Properties

This paper investigated the influence of filler materials such as E308L and ENiCu-7 utilized in the GTA welded AISI 304 with respect to mechanical and corrosion properties. It was found that E308L had shown better tensile strength and corrosion resistance as compared to ENiCu-7. A comparative analysis had been made on the different regions of the weldment subjected to cyclic air oxidation at 700°C. The corrosion products were examined using XRD and SEM/EDAX analysis.

scholarly journals Arc Characteristics and Weld Bead Microstructure of Ti-6Al-4V Titanium Alloy in Ultra-high Frequency Pulse Gas Tungsten Arc Welding (UHFP-GTAW) Process

2020 ◽  
Vol 26 (4) ◽  
pp. 426-431
Author(s):  
Wei LI ◽  
Gaochong LV ◽  
Qiang WANG ◽  
Songtao HUANG
Keyword(s):  
Titanium Alloy ◽  
Fusion Zone ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Gas Tungsten Arc ◽  
Arc Characteristics ◽  
Arc Pressure ◽  
Gtaw Process ◽  
Gas Tungsten

To resolve the problem of grain coarsening occurring in the fusion zone and the heat-affected zone during conventional gas tungsten arc welding(C-GTAW) welded titanium alloy, which severely restricts the improvement of weld mechanical properties, welding experiments on Ti-6Al-4V titanium alloy by adopting ultra-high frequency pulse gas tungsten arc welding (UHFP-GTAW) technique were carried out to study arc characteristics and weld bead microstructure. Combined with image processing technique, arc shapes during welding process were observed by high-speed camera. Meanwhile the average arc pressure under various welding parameters were obtained by adopting pressure measuring equipment with high-precision. In addition, the metallographic samples of the weld cross section were prepared for observing weld bead geometry and microstructure of the fusion zone. The experimental results show that, compared with C-GTAW, UHFP-GTAW process provides larger arc energy density and higher proportion of arc core region to the whole arc area. Moreover, UHFP-GTAW process has the obviously effect on grain refinement, which can decrease the grain size of the fusion zone. The results also revealed that a significant increase of arc pressure while increasing pulse frequency of UHFP-GTAW, which could improve the depth-to-width ratio of weld beads.

In-Situ Neutron Diffraction Study of Gas Tungsten Arc Welding of a 1018 Plain Carbon Steel

2007 ◽  
Vol 1027 ◽  
Author(s):  
Michael Gharghouri ◽  
Michael J Watson ◽  
David Dye ◽  
Ronald B Rogge
Keyword(s):  
Neutron Diffraction ◽  
Arc Welding ◽  
Neutron Diffraction Study ◽  
Plain Carbon Steel ◽  
Gas Tungsten Arc Welding ◽  
Gas Tungsten Arc ◽  
Gtaw Process ◽  
Gas Tungsten ◽  
In Situ Neutron Diffraction

AbstractIn-situ neutron diffraction measurements of a dynamic Gas Tungsten Arc Welding (GTAW) process have been performed using a unique instrument that establishes steady-state conditions by translating and rotating a cylindrical specimen past a stationary weld torch. The fixed neutron sampling volume is at a constant location with respect to the torch as new material is brought into the fusion zone. We present maps of lattice spacing and integrated intensity as a function of location about the weld torch, which provide insight into the temperature and phase distributions around the weld.

Studies on Thin Film Oxide Formation on GTA Welded AISI 304 & AISI 310S Exposed at 600°C

2012 ◽  
Vol 584 ◽  
pp. 131-135 ◽  
Author(s):  
Jeet Kumar Kesharwani ◽  
Abhilash Paliwal ◽  
Kamir Kothari ◽  
K. Devendranath Ramkumar ◽  
N. Arivazhagan ◽  
...  
Keyword(s):  
Thin Film ◽  
Research Work ◽  
Weld Zone ◽  
Austenitic Stainless Steels ◽  
Tensile Tests ◽  
Air Oxidation ◽  
Oxide Formation ◽  
Aisi 304 ◽  
Gas Tungsten Arc ◽  
Marine Applications

In this research work, an attempt was made to study the thin film oxide formation on the dissimilar gas tungsten arc welded austenitic stainless steels of grades AISI 304 and AISI 310S using E309L filler wire. These combinations are widely used in power plant and marine applications. An assessment was carried out to estimate the metallurgical, mechanical properties of the weldment. Tensile tests revealed that the fracture occurred at the weld zone. In addition, Vickers Micro-hardness tests were performed across the length of the weldment. Furthermore, hot corrosion studies were performed on different regions (heat affected zones, weld zone and parent metal zones) of the weldment subjected to air oxidation at 600°C. It was revealed from thermogravimetric analysis that there was weight loss in the heat affected zone of the AISI 310S side after 50 cycles. The thin film oxide layer formation on various zones of the weldment was examined using the combined techniques of optical microscopy, XRD and SEM/EDAX analysis.

Hot Corrosion Studies of GTA Welded Monel 400 Exposed to Thin Film of Molten Na2so4 - 60% V2O5 at 600°C

2012 ◽  
Vol 584 ◽  
pp. 126-130
Author(s):  
Puneet Kumar Mishra ◽  
K.S. Gopalakrishnan ◽  
K. Devendranath Ramkumar ◽  
N. Arivazhagan ◽  
S. Narayanan
Keyword(s):  
Thin Film ◽  
Hot Corrosion ◽  
Research Work ◽  
Tensile Tests ◽  
Weld Interface ◽  
Corrosion Properties ◽  
Gas Tungsten Arc ◽  
Corrosion Studies ◽  
Microstructure Examination ◽  
Monel 400

In this research work, an attempt has been made to investigate the gas tungsten arc welded Monel 400 plates using ENiCu-7 for its mechanical and corrosion properties. Microstructure examination reveals the coarse grain formation of Ni-Cu phase in the heat affected zone (HAZ) and well defined dendrites are observed in the weld region. Tensile tests showed that fracture occurred at the weld interface and the ultimate tensile strength of the Monel weldment is found to be 515 MPa. Furthermore hot corrosion studies were performed on the different zones (Weld, HAZ and Base metal) of Monel 400 exposed to the thin film of molten salt environment of Na2SO4 - 60% V2O5 at 600°C. It was found that corrosion was extremely severe on the fusion zone after exposed to 50 cycles. The corrosion products were characterized using the combined techniques of optical microscopy, XRD, SEM/EDX analysis

Microstructural Characterization and Corrosion Behavior of Activated Flux Gas Tungsten Arc-Welded and Multipass Gas Tungsten Arc-Welded Stainless Steel Weld Joints in Nitric Acid

CORROSION ◽  
10.5006/0515 ◽  
2012 ◽  
Vol 68 (8) ◽  
pp. 762-773 ◽  
Author(s):  
A. Ravi Shankar ◽  
S. Niyanth ◽  
M. Vasudevan ◽  
U. Kamachi Mudali
Keyword(s):  
Stainless Steel ◽  
Weld Metal ◽  
Base Metal ◽  
Corrosion Behavior ◽  
Delta Ferrite ◽  
Thick Sample ◽  
Weld Joints ◽  
Gas Tungsten Arc ◽  
Gtaw Process ◽  
Gas Tungsten

AISI Type 304L (UNS S30403) austenitic stainless steels are widely used in spent nuclear fuel reprocessing plants, and welding is an indispensable tool used for joining these materials. In the present study, manual gas tungsten arc-welded (M-GTAW) and activated gas tungsten arc-welded (A-GTAW) weldments of Type 304L stainless steel were prepared to examine the microstructural and corrosion behavior of the weldments. A total of 6 passes were required to complete the 6 mm thick sample welding, and 16 passes were required for 12 mm thick sample welding using the M-GTAW process, compared to single-pass A-GTAW welding. Characterization of weld joints was done by radiography, optical microscopy, microhardness tester, a feritscope, and scanning electron microscopy (SEM). The optical microstructure of the fusion zone of weld joints showed delta ferrite in various morphologies. The presence of delta ferrite stringers were observed in the weld joints, extending from the weld metal to the base metal. The corrosion rate results showed that the M-GTAW sample showed only a marginal increase in the corrosion resistance when compared to those welded by the single-pass A-GTAW process. SEM examination revealed the morphology of attack in the base metal was predominantly intergranular while in the weld metal it was interdendritic. The SEM micrograph also showed preferential attack of the delta ferrite stringers.

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