Modified Implementation Strategy in Explosive Welding for Joining between Precipitate-hardened Alloys
                           Yake Wua, Junyong Lub, Sai Tanb, Feng Jianga* and Jun Suna
a Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiao tong University, Xi'an 710049, China
b National Key Laboratory for Vessel Integrated Power System Technology, Naval University of Engineering, Wuhan 430033, China

ABSTRACT
Modified implementation strategy in the explosive welding was put forward to reduce the difficulty in joining among the precipitate-hardened alloys, whether similar or dissimilar. The main difference was the direct use of the supersaturated alloys but not their aged counterparts. Weldability windows were constructed for different alloy combinations of different states and the results showed the adjustment led to the apparent reduction of the left and lower limits and consequently expanding space of the optional welding parameters, indicating the lower threshold and higher possibility to achieve bonding. It also exhibited excess stability with the flyer plate in larger thickness. The weldability variation was verified by the numerical simulations using the Smoothed Particle Hydrodynamics (SPH) method and the experimental results from available literature. Further analyses demonstrated the new strategy was more energy-saving and post-treatment allowing with probably higher efficiency.