摩擦押出しによる銅-アルミニウム複合薄板の成形

概要

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The friction-assisted extrusion of thin strips, developed by the authors, was applied to the production of copper and aluminium composite thin strips. The composite thin strips which are claddings with 2 and 3 layers of copper and aluminium and 0.25〜1mm in thickness could be extruded successfully from block metals with the extrusion ratio of 10〜40 and punch pressure ranging from about 0.6 to 1.1 GPa. Composite thin strips which are made of complex phases of copper and aluminium and are 0.05〜1mm in thickness could be extruded directly from the powder mixture of Cu and Al with the extrusion ratio of 5〜200 and the punch pressure of 0.3〜1.2 GPa. The thin strips as extruded from the metal powders showed Vickers hardness HV increasing with the mixture ratio of copper powder and the extrusion ratio within a range from 50 to 240. The tensile strength S_T of the thin strips as extruded from composite metal powders was 290 MPa at maximum and was increased to 340 MPa by heat treatment for 1 hour at 400℃.
1995-04-25