Microstructure and fatigue properties of dissimilar spot welded joints of aisi 304 and aisi 1008
TLDR
In this paper, the spot welding characteristics of weld joints between carbon steel and stainless steel composites are discussed in an experiment conducted on dissimilar weld joints with different welding currents and electrode pressing forces.Abstract:
Carbon steel and stainless steel composites are being more frequently used for applications requiring a corrosion resistant and attractive exterior surface and a high strength structural substrate. Spot welding is a potentially useful and efficient jointing process for the production of components consisting of these two materials. The spot welding characteristics of weld joints between these two materials are discussed in this paper. The experiment was conducted on dissimilar weld joints using carbon steel and 304L (2B) austenitic stainless steel by varying the welding currents and electrode pressing forces. Throughout the welding process; the electrical signals from the strain sensor, current transducer and terminal voltage clippers are measured in order to understand each and every millisecond of the welding process. In doing so, the dynamic resistances, heat distributions and forging forces are computed for various currents and force levels within the good welds’ regions. The other process controlling parameters, particularly the electrode tip and weld time, remained constant throughout the experiment. The weld growth was noted for the welding current increment, but in the electrode force increment it causes an adverse reaction to weld growth. Moreover, the effect of heat imbalance was clearly noted during the welding process due to the different electrical and chemical properties. The welded specimens finally underwent tensile, hardness and metallurgical testing to characterise the weld growth.read more
Citations
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Investigation of Aluminum-Stainless Steel Dissimilar Weld Quality using Different Filler Metals
TL;DR: In this paper, the effects of welding voltage and type of filler metals used on the weld joints were studied, and it was concluded that the welding voltage of 18 V and aluminum filler ER5356 is the optimum filler in joining the dissimilar metals aluminum AA6061 and stainless steel SUS304.
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Investigation of single-pass/double-pass techniques on friction stir welding of aluminium
TL;DR: In this article, the effects of single-pass/double-pass techniques on friction stir welding of aluminium were studied using an optical microscope and the results indicated that defects such as surface lack of fill and tunnels in the welded area contributed to a decrease in mechanical properties.
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Investigation of Effects of Mig Welding on Corrosion Behaviour of AISI 1010 Carbon Steel
TL;DR: In this article, the authors present the corrosion behavior of welded low carbon steel at different welding voltages and filler materials, and the results showed that the corrosion rate decreased when the welding voltage increased, as it directly affected the welding heat input.
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The effects of welding parameters on butt joints using robotic gas metal arc welding
TL;DR: In this article, the authors used low carbon steel A1008 as base metal and AWS ER 70S-6 as filler metal in the butt joint process to determine the tensile strength, which is identified as the main characteristic of the weld.
Journal ArticleDOI
Effect of process parameters on the mechanical properties and failure behavior of spot welded low carbon steel
Farizah Adliza Ghazali,Farizah Adliza Ghazali,Yupiter Harangan Prasada Manurung,Mohamed A. Mohamed,Siti Khadijah Alias,Shahrum Abdullah +5 more
TL;DR: In this article, the main affecting welding parameters such as weld current, weld time, electrode force and holding time were determined as the basis for quality evaluation, and selected quality features were classified into mechanical properties and failure behavior, which were required for application with highly dynamic loading.
References
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Peel and shear strength of spot-welded and weld-bonded dissimilar thickness joints
Saied Darwish,Ali M. Al-Samhan +1 more
TL;DR: In this paper, the effect of thickness dissimilarity on the peel and shear strength of spot-welded dissimilar thickness joints was investigated, and it was shown that thickness similarity magnifies the stress concentration located at the boundaries of the weld nugget.
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Input electrical impedance as quality monitoring signature for characterizing resistance spot welding
TL;DR: A real-time and in-situ RSW quality monitoring method, which takes the input electrical impedance of the welding system as the monitoring signature, is presented in this paper. But the method is not suitable for real time applications.
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In Situ Observation of Solidification Process of AISI 304 Austenitic Stainless Steel
TL;DR: In this paper, the solidification process of AISI 304 stainless steel during cooling at a rate of 0. 05 K/s has been observed in situ using a confocal scanning laser microscope (CSLM).
Journal ArticleDOI
Forging force in resistance spot welding
TL;DR: In this paper, the intentional force increase during the process of resistance spot welding (RSW) was studied and it was found that the forging force as a way of influencing weld quality has rarely been studied.
Journal ArticleDOI
Deformation and failure response of 304L stainless steel SMAW joint under dynamic shear loading
TL;DR: In this article, the dynamic shear deformation behavior and fracture characteristics of 304L stainless steel shielded metal arc welding (SMAW) joint are studied experimentally with regard to the relations between mechanical properties and strain rate.