The Effect of Loading Ratio on the Interface Morphology in Explosive Welding: A Review
S. Debbarma1, P. Kumar2, S. Kumar Ghosh1, S. Saravanan3, K. Jayachandran3, R. K. Bhogendro Meitei1
1Department of Mechanical Engineering, National Institute of Technology, Tripura, India
2Department of Mechanical Engineering, Galgotias University, Uttar Pradesh, India
3Annamalai University, Department of Mechanical Engineering, Tamil Nadu, India
Keywords: explosion welding, loading factor, mechanical properties, microstructure, intermetallic compound, heat-affected zone
Abstract
This article presents an analysis of the influence of the loading factor, a key parameter of the explosion welding process, on the interface morphology and mechanical properties of similar and dissimilar joints. The loading factor (the ratio of the explosive mass to the impact plate mass) determines the impact velocity, dynamic bending angle, and jet formation. It influences the nature of the interface, namely the formation of straight, wavy, or intermetallic layers, and therefore the weldability of dissimilar metals. Correct selection of the loading factor ensures high-quality welding with minimal defects, while excessive or insufficient loading factors lead to incomplete bonding or deterioration of the interface quality. This article summarizes the main experimental results and offers recommendations for process optimization and future research directions.
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