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 ◽  
...  

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.

2012 ◽  
Vol 622-623 ◽  
pp. 304-308
Author(s):  
Amar Parth Sahu ◽  
Rishi Kapoor ◽  
T. Prashanth ◽  
Jeet Kumar Kesharwani ◽  
Ramkumar K. Devendranath ◽  
...  

This research work aims at investigating the performance of the gas tungsten arc welded dissimilar AISI 304 and AISI 310S when subjected to cyclic hot corrosion in air oxidation and in the molten salt environment of K2SO4 + 60% NaCl environment at 600°C. The weldments are characterized for its mechanical and metallurgical properties. Tensile strength of the weldment is found to be 529 Mpa. Further the hot corrosion studies are performed on the various zones of the weldment and the corrosion products are characterized by the combined techniques of optical microscopy, XRD and SEM/EDAX analysis.


2012 ◽  
Vol 622-623 ◽  
pp. 299-303
Author(s):  
Abhishek Babasaheb Ajari ◽  
Hayagreev Raman ◽  
V. Ajay Shri Bhuvanesh ◽  
Manikanta Sriram ◽  
K. Devendranath Ramkumar ◽  
...  

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.


Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1983
Author(s):  
Chih-Ting Wu ◽  
Sheng-Long Lee ◽  
Ye-Feng Chen ◽  
Hui-Yun Bor ◽  
Kung-Hui Liu

The mechanical properties of the Al-Mg alloy can be enhanced by adding metallic elements, but a continuous distribution of precipitates at grain boundaries leads to intergranular corrosion during sensitization treatment. In the present work, Mn, Zn additions, water cooling and furnace cooling were executed to investigate their effects on the mechanical and corrosion properties of the Al-4.6Mg alloy. Our results show that adding Mn to Al-4.6Mg alloys may produce grain refinement and dispersion strengthening, increasing tensile strength and hardness. The presence of Mn did not affect the corrosion resistance of Al-Mg alloys. Adding Zn to the Al-4.6Mg alloy increased tensile strength and hardness, but decreased corrosion resistance. Combined, the addition of Mn and Zn to the Al-4.6Mg alloy exhibited the highest tensile strength and hardness, but seriously reduced corrosion resistance. Furnace cooling substituted for water quenching could avoid intergranular corrosion, but slightly decreased the tensile strength and hardness by 7.0% and 6.8%, respectively.


2012 ◽  
Vol 185 ◽  
pp. 84-86
Author(s):  
Sharief B. Hafeez ◽  
Kumar S. Senthil ◽  
B.K. Yeshwanth ◽  
N. Arivazhagan ◽  
Ramkumar K. Devendranath ◽  
...  

In this work, an attempt was made to examine the microstructure changes on the gas tungsten arc welded AISI 304 subjected to hot corrosion in Na2SO4+ V2O5(60%) at 700°C under cyclic conditions. It was found that welding of AISI 304 using E308L showed better corrosion resistance and tensile strength as compared to ENiCu-7 filler wire. The corrosion products were analyzed using SEM/EDAX and XRD.


2012 ◽  
Vol 622-623 ◽  
pp. 335-339
Author(s):  
Abhishek Babasaheb Ajari ◽  
Hayagreev Raman ◽  
V. Ajay Shri Bhuvanesh ◽  
Manikanta Sriram ◽  
K. Devendranath Ramkumar ◽  
...  

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.


2006 ◽  
Vol 12 (4) ◽  
pp. 231-235
Author(s):  
Kemal Delijic ◽  
Vanja Asanovic ◽  
Dragan Radonjic

The paper describes the mechanical and corrosion properties of three heat treatable extruded Al-Mg-Si aluminum alloys. The alloys were tested as T5 tempered (air-quenched directly on the press and artificially aged) after processing by the extrusion of semi-continuous cast and homogenized billets. The addition of small amounts of zirconium and manganese in the base AIMgSiO.7 alloy increased the strength, reaching 310 MPa of tensile strength and increased the corrosion rate by 15% in aqueous sodium chloride solution.


2012 ◽  
Vol 584 ◽  
pp. 131-135 ◽  
Author(s):  
Jeet Kumar Kesharwani ◽  
Abhilash Paliwal ◽  
Kamir Kothari ◽  
K. Devendranath Ramkumar ◽  
N. Arivazhagan ◽  
...  

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.


2002 ◽  
Vol 713 ◽  
Author(s):  
Tammy S. Edgecumbe Summers ◽  
Raúl B. Rebak ◽  
Todd A. Palmer ◽  
Paul Crook

ABSTRACTThe phase stability of C-22 alloy (UNS N06022) gas tungsten arc welds was studied by aging samples at 593, 649, 704, and 760°C for times up to 6,000 hours. The tensile properties and the Charpy impact toughness of these samples were measured in the as-welded condition as well as after aging. The corrosion resistance was measured using standard immersion tests in acidic ferric sulfate (ASTM G 28 A) and 2.5% hydrochloric acid solutions at the boiling point. The microstructures of weld samples were examined using scanning electron microscopy (SEM). Precipitate volume fraction measurements were made using optical microscopy.Degradation of the mechanical and corrosion properties of C-22 welds due to aging at all temperatures investigated was seen to occur sooner than was seen in C-22 base metal. An evaluation of the kinetics of nucleation and growth of the precipitates forming at these temperatures, however, indicated that no significant changes in TCP phase morphology would occur at temperatures below approximately 300°C.a


Author(s):  
N. I. Urbanovich ◽  
K. E. Baranovsky ◽  
E. V. Rozenberg ◽  
T. I. Bendik ◽  
A. A. Karpenkin ◽  
...  

A comparative analysis of the corrosion properties of zinc-containing coatings obtained on the basis of metallic powder zinc and dispersed hot-dip galvanized waste has been carried out. The results of a study of the corrosion resistance of zinc-containing coatings by the electrochemical method and in a salt spray chamber have shown that coatings obtained on the basis of dispersed hot-dip galvanized waste are not inferior in protective properties to coatings based on powder standard zinc.


2019 ◽  
Vol 810 ◽  
pp. 58-63
Author(s):  
Josef Hlinka ◽  
Stanislav Lasek

The contribution is aimed at corrosion propertied and wettability of basic graded of stainless steel commonly used in medicine as a standard for construction of instruments and other applications. Samples of AISI 304 (1.4301) steel were chemical passivated by nitric acid and tested for corrosion resistance in environment of sodium hypochlorite (NaClO), which is commonly used for basic disinfection of surfaces or devices in hospital facilities. It was found that chemical passivation of stainless steel surface increases its corrosion resistance and lower corrosion rate. Passivation layer also shows more polarization resistance. The wettability of passivated surface was measured by sessile drop method. Wettability itself determinates effectivity of disinfection process as the surfaces with lower contact angle may be cleaned and disinfected with more efficiency. It was proofed that chemical passivation increases wettability by lowering contact angle of treated surface.


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