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Direct Bonding Method of Aluminum to Stainless Steel by Pressure Casting of Aluminum

Published online by Cambridge University Press:  15 February 2011

Katsuaki Suganuma
Katsuaki Suganuma*
Affiliation:
National Defense Academy, Department of Materials Science and Engineering, Hashirimizu 1-10-20, Yokosuka 239, Japan
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Abstract

A new process for joining Al to stainless steel has been established by using pressure casting of Al in air. Blocks of AISI type 304 austenitic stainless steel to be joined were placed in a mold and were preheated at 450 °C – 600 °C in air. Molten Al was poured into the mold and a pressure of 50 MPa was applied immediately. Stainless steel was tightly bonded to Al by the present process. At the optimum preheating condition, the interface strength was higher than that of Al and fracture did not occur at the interface. At the interface, an intermetallic compound layer was formed, and it was analyzed by TEM. Because this process can be carried out in air by casting of Al, the process has a potential for the mass-production of Al/stainless steel joints or clads.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 314: Symposium R – Joining and Adhesion of Advanced Inorganic Materials , 1993 , 209
Copyright
Copyright © Materials Research Society 1993

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