Manipulating heat density to enhance the performance of Aluminium Alloy-Steel joints using arc oscillations in the GTAW process

Kumar, Tinku; Kiran, Degala Venkata; Arora, Navneet; Chitral, Srihari

doi:10.1016/j.matlet.2021.130897

Cited by 3 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The joining of various materials has been employed in various sectors, including the automobile, aerospace, nuclear power, and shipbuilding industries. However, creating a suitable joint between different metals can be challenging due to their distinct physical and chemical properties [5]. One solution that has gained popularity is the use of Fe-Al weld joints, or hybrid material joints, which can reduce the overall weight of products while maintaining strength and durability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Non-invasive optical characterization and estimation of Zn porosity in gas tungsten arc welding of Fe–Al joints using CR model and OES measurements

SRIKAR

Kumar

Kiran

et al. 2023

Plasma Sci. Technol.

Self Cite

View full text Add to dashboard Cite

In this study, we employed a non-invasive approach based on the collisional radiative (CR) model and optical emission spectroscopy (OES) measurements for the characterization of gas tungsten arc welding (GTAW) discharge and quantification of Zn-induced porosity during the GTAW process of Fe-Al joints. The OES measurements were recorded as a function of weld current, welding speed, and input waveform. The OES measurements revealed significant line emission from Zn-I in 460 nm to 640 nm and Ar-I in 680 nm to 800 nm wavelength range in all experimental settings. The OES cum CR model approach for Zn-I line emission enabled the simultaneous determination of both essential discharge parameters i.e. electron temperature and electron density. Further, these predictions were used to estimate the Zn-induced porosity using OES-Actinometry on Zn-I emission lines using Ar as actinometer gas. The OES-actinometry results were in good agreement with porosity data derived from an independent approach, i.e., X-ray radiography images. The current study shows that OES-based techniques can provide an efficient route for real-time monitoring of weld quality and estimate porosity during the GTAW process of dissimilar metal joints.

show abstract

Section: Introductionmentioning

confidence: 99%

“…One solution that has gained popularity is the use of Fe-Al weld joints, or hybrid material joints, which can reduce the overall weight of products while maintaining strength and durability. These joints can be produced using various welding processes, such as gas tungsten arc welding (GTAW) and gas metal arc welding [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%