10 Assessing Bond Strength in 304L Stainless Steel Plate Welded Using Plastic Explosives 67 primary reasons for variability within a given bond are likely inconsistent bond quality, i.e. porosity presence along the interface, and variability introduced during testing. Failure in the tension specimens was observed both along the interface and within the parent material associated with the grip regions. Fractography revealed that different failure modes (tension, shear, and bending) were dominant in different failure locations. This is likely a result of variable bond strength within specimens and bond interfaces hardened relative to the grip material. 10.4 Conclusion Successful welds can be produced in 304L stainless steel plate using plastic explosives with detonation velocities exceeding the speed of sound in steel, but the processing parameter window is small. Significant variability in porosity presence and strength were observed along bonded interfaces. This inconsistency in bond quality produces welds with highly variable interface strength, even though they may demonstrate hermiticity. Acknowledgment Sandia National Laboratories is a multimission laboratory managed and operated by the National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the US Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525. This chapter describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the chapter do not necessarily represent the views of the US Department of Energy or the United States Government. SAND2020-2227 A. References 1. Crossland, B.: Explosive Welding of Metals and its Application. Oxford University Press, Oxford (1982) 2. Blazynski, T.Z.: Explosive welding, forming and compaction. Appl. Sci. (1983) 3. Zamani, E., Liaghat, G.H.: Explosive welding of stainless steel – carbon steel coaxial pipes. J. Mater. Sci. 47, 685–695 (2012) 4. Athar, M.M.H., Tolaminejad, B.: Weldability window and the effect of Interface morphology on the properties of Al/Cu/Al laminated composites fabricated by explosive welding. Mater. Des. 86, 516–525 (2015) 5. Crossland, B.: The development of explosive welding and its application in engineering. Met. Mater., 401–413 (1971) 6. Crossland, B., McKee, F.A., Szecket, A.: An experimental investigation of explosive welding parameters. In: High-Pressure Science and Technology, pp. 1837–1845. Springer US, New York (1979) 7. Ribeiro, J.B., Mendes, R., Loureiro, A.: Review of the weldability window concept and equations for explosive welding. J. Phys. 500, 1–6 (2014)
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