Powder Metallurgical Fabrication and Microstructural Investigations of Aluminum/Steel Functionally Graded Material
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Abstract
Aluminum/steel electric transition joints (ETJs) are used in aluminum reduction cell for the purpose of welding aluminum rod and steel bracket components. Solid state welding process used for joining aluminum and steel at the electric transition joints have the drawbacks of cracking and separation at the interface surfaces. Cracking and separation at the electric transition joints are caused by the stress singularities that developed due to the mismatch in thermal and mechanical properties of each material. To overcome the drawback of electric transition joints, aluminum/steel functionally graded may be used as electric transition joints or proposed. Therefore manufacturing and investigation of aluminum/steel functionally graded materials fabricated by powder metallurgy process were carried out through the current work. Different samples with different layers of aluminum/steel functionally graded materials were compacted using steel die and punch at the same compacted pressure and sintered temperature. After investigating the different samples of aluminum/steel functionally graded materials under different fabrication conditions, the suitable fabrication regime was determined with the aid of microscopic observations.
- J. Banker and A. Nobili, “Aluminum-Steel Electric Transition Joints, Effects of Temperature and Time upon Mechanical Properties,” In: W. Schneider, Ed., Light Metals 2002, The Minerals, Metals, & Materials Society, 2002, pp. 439-445.
- J. W. Elmer and D. D. Kautz, “Fundamentals of Friction Welding,” ASM Handbook, Welding, Brazing, & Soldering, Vol. 6, 1993, pp. 150-155.
- T. Stotler, “Procedure Development and Practice Considerations for Inertia and Direct-Drive Friction Welding,” ASM Handbook, Welding, Brazing & Soldering, Vol. 6, 1993, pp. 888-891.
- A. Patterson, “Fundamentals of Explosion Welding,” ASM Handbook, Welding, Brazing & Soldering, Vol. 6, 1993, pp. 160-164.
- J. G. Banker and E. G. Reineke, “Explosion Welding,” ASM Handbook, Welding, Brazing & Soldering, Vol. 6, 1993, pp. 303-305.
- L. M. Smith and M. Celant, “Practical Handbook of Cladding Technology,” CASTI Publishing, Inc., Edmonton, 1998.
- D. L. Olson, T. A. Siewert, S. Liu and G. R. Edwards, “Roll Welding,” ASM Handbook, Welding, Brazing & Soldering, Vol. 6, 1993, pp. 312-314.
- N. Noda, S. Nakai and T. Tsuji, “Thermal Stresses in Functionally Graded Material of Particle-Reinforce Composite,” Japanese Society of Mechanical Engineering Series A, Vol. 41, 1998, pp. 178-184.
- O. Bleek, D. Munz, W. Schaller and Y. Yang, “Effect of a Graded Interlayer on the Stress Intensity Factor of Cracks in a Joint under Thermal Loading,” Engineering Fracture Mechanics, Vol. 60, No. 5-6, 1998, pp. 615-623. doi:10.1016/S0013-7944(98)00044-7
- M. Nemat-Alla, “Reduction of Thermal Stresses by Developing Two Dimensional Functionally Graded Materials,” International Journal of Solids and Structures, Vol. 40, 2003, pp. 7339-7356. doi:10.1016/j.ijsolstr.2003.08.017
- M. Nemat-Alla, “Reduction of Thermal Stresses by Composition Optimization of Two-Dimensional Functionally Graded Materials,” Acta Mechanica, Vol. 208, No. 3, 2009, pp. 147-161. doi:10.1007/s00707-008-0136-1
- M. Nemat-Alla, K. Ahmed and I. Hassab-Allah, “Elastic-Plastic Analysis of Two Dimensional Functionally Graded Materials under Thermal Loading,” International Journal of Solids and Structures, Vol. 46, No. 15-16, 2009, pp. 2774-2786. doi:10.1016/j.ijsolstr.2009.03.008
- D. Alton and J. Michael, “Combustion Synthesis of Advanced Materials,” ASM Handbook, Powder Metal Technologies and Applications, Vol. 7, 1998, p. 1252.