Experimental Investigation and Micro-Structure Study of Interface of Explosive Welded SS304 and AA6061 Plates

Abstract:

The explosive welding is a non-conventional technique gaining popularity due to its ability to join dissimilar metals. The technique is very successful in achieving area joining by using the controlled energy of explosives which creates a metallurgical bond between two similar or dissimilar materials. This paper explains the technique of explosive welding for joining SS304 and AA6061 using pure aluminum (2 mm) as an interlayer. The joining was done in two stages. The explosive used is a mixture of Trimonite and salt having velocity of detonation (VOD) in the range of 1500-1600 m/sec. Ultrasonic testing showed good bonding over more than 80%. Micro-hardness variations as compared to parent materials have been evaluated along with microstructure study done to analyze the interface characteristics. SEM/EDS also have been used to check the presence of any possible brittle phases. Both the interfaces are found to be laminar, continuous, uniform and free from micro-cracks.

• Periodical: Materials Science Forum (Volumes 830-831)
• Pages: 261-264
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.830-831.261
• Online since: September 2015
• Authors: Abhishek Upadhyay*, Bir Bahadur Sherpa, Sandeep Kumar, Niraj Srivastav, Pal Dinesh Kumar, Arun Agarwal
• Keywords: Explosive Welding, Interlayer, Laminar, Micro-Hardness, Waviness

References

[1] Yakup Kay , Nizamettin Kahraman, An investigation into the explosive welding/cladding of Grade A ship steel/AISI 316L austenitic stainless steel, materials and design 52 (2013) 367-372.

DOI: 10.1016/j.matdes.2013.05.033

[2] F. Grignon, D. Benson, K.S. Vecchio, M.A. Meyers. Explosive welding of aluminum to aluminum: analysis, computation and experiments. International journal of impact engg. 30 (2004)1333-1351.

DOI: 10.1016/j.ijimpeng.2003.09.049

[3] Crossland B. Explosive welding of metals and its application. Claredon Press, Oxford (1982).

[4] S. Carpenter, R.H. Wittman, and R.J. Carlson, Relationships of explosive welding parameters to material properties and geometries factors, proc. first int. conf. of the center for high energy forming, university of Denver, June 1967, p.124.

[5] Gerland M, Presles HN, Guin JP, Bertheau D. Explosive cladding of a thin Ni-film to an aluminium alloy. Mater Sci Eng A 2000; 280: 311–9.

DOI: 10.1016/s0921-5093(99)00695-4