Thermal kinetics in explosive cladding of dissimilar metals

Abstract

Explosive cladding is a solid state process in which joining of dissimilar metals is accomplished by the acceleration of one of the components at extremely high velocity by employing chemical explosives. This study focuses on developing a model to predict the heat transfer during cladding and to determine the characteristics of the shock compressed gas developed at the standoff distance during cladding. The influence of interlayer on the amount of heat transferred is also investigated. It is concluded that the amount of heat transferred and the kinetic energy lost during collision at the interface determine the morphology of the interface.

Development of Weldability Window for Aluminum-Steel Explosive Cladding

“…Parallel and inclined explosive cladding configuration, shown in Fig.1 [7], with aluminum 5052 alloy (size: 90 mm × 50 mm × 2 mm) and SS 304 (size:90 mm × 50 mm × 6 mm) as flyer and base plates respectively was attempted.…”

Microstructural and Mechanical Properties of Al 5052-SS 316 Explosive Clads with Different Interlayer

“…Where, k, ρ and c denote thermal conductivity, density and specific heat capacity of metals respectively [4].…”

“…Whereas, explosive cladding offer a feasible alternative to clad aluminium-steel plates devoid of intermetallic compounds at minimum cost. The quality of explosive clad is dictated by the proper selection of process parameter viz., standoff distance, loading ratio and inclination angle [2][3][4].…”

Explosive cladding and post-weld heat treatment of mild steel and titanium

“…Although, explosive cladding requires bonding over a large surface area, Zamani et al [6] have derived a welding window for explosive clads of 316L SS / carbon steel pipes using finite element simulations followed by experimental investigations. The morphology of the interface in explosive clads is of three different types namely (i) straight (ii) wavy and (iii) continuous solidified metal dictated by the kinetic energy (KE) dissipation of the flier plate at the collision interface, which in turn depends on the cladding parameters such as flier plate thickness, explosive load ratio, stand off distance and flier plate velocity [6][7][8][9]. Akbari et al [10] have described in detail the striking dependence of load ratio on the evolution of interface microstructure in Ti-304 SS explosive clads.…”