Metallurgical Studies on Explosive Welded Aluminium Alloy-Stainless Steel Bimetallic Plates

Abstract:

Aluminium alloys and austenitic stainless steels are often used for construction of cryogenic pressure vessels owing to their attractive properties at cryogenic temperatures. Indian space programme requires AA2219/ICSS1218-SS321 bimetallic components which are machined from explosive welded plates. Pure aluminium sheet is used as an interlayer between aluminium alloy and steel to achieve a satisfactory bond. Internal soundness of the joint is evaluated through ultrasonic testing (UT). The present paper discusses bonding trials carried out by varying the explosive parameters using facilities and expertise of Terminal Ballistic Research Laboratory (TBRL), Chandigarh and M/s Giridhari Explosives Private Limited (GEPL), Hyderabad. The welded joint is extensively characterised with respect to Lap Shear and Ultimate Tensile Strength at ambient temperature and for metallographic analysis.

• Periodical: Materials Science Forum (Volume 710)
• Pages: 644-649
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.710.644
• Online since: January 2012
• Authors: Pravin Muneshwar, Satish Kumar Singh, K. Naresh Kumar, Bhanu Pant, K. Sreekumar
• Keywords: AA2219 Aluminum Alloy Plate, Explosive Welding, ICSS-1218-SS321 Plate, Lap Shear Strength, Microstructure

References

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