Influence of Processing Parameters on Bonding Conditions in Backward Extrusion Forged Bonding

Abstract:

In this study, conditions of metallurgical bonding between steel and aluminum in cold forging process is investigated. Two-layered cylindrical cup of the materials is produced in cold backward extrusion in five processing velocity conditions. Small tensile test specimens are cut off at the bonding boundary in the product using a wire-cutting machine and the bonding strength on the boundary is measured in tensile test using the specimens. Fractured contact surfaces are observed with an electron microscope for investigation of bonding. Finite element analyses for the backward extrusion are conducted and surface expansion ratio and interface pressure on the boundary are calculated. The influence of process conditions, extrusion velocity and surface expansion ratio and boundary pressure, on the bonding are investigated.

• Periodical: Key Engineering Materials (Volumes 504-506)
• Pages: 387-392
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.504-506.387
• Online since: February 2012
• Authors: Yoshinori Yoshida, Takamasa Matsubara, Keisuke Yasui, Takashi Ishikawa, Tomoaki Suganuma
• Keywords: Backward Extrusion, Bonding Strength, Forged Bonding

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