Process of manufacturing high-strength high-elasticity aluminum

Details Process of manufacturing high-strength high-elasticity aluminum Process of manufacturing high-strength high-elasticity aluminum

1987-09-24

1989-05-16

Dean, R.

Alloys or metallic compositions

Aluminum base

Copper containing

148 2, 148 3, 148 127A, 148159, 148417, C22C 2100

Patent

active

048308269

ABSTRACT:
In order to manufacture high-strength high-elasticity Al alloys suitable for constructive machine parts and for terminal equipment parts for electronic devices, alloys consisting by wt % of 3.2.about.8.0% Zn, 1.2.about.4.5% Mg, 0.2.about.1.5% Cu, 0.1.about.1.2% Mn, 0.1.about.0.5% Cr, 0.005.0.2% B, 0.2.about.1.0% Be, 0.1.about.1.2% Ni and/or Co, 0.05.about.1.2% Zr and/or Hf, 0.05.about.3.0% Ag, and balance Al and unavoidable impurities, are subjected to nitriding treatment in molten state before being cast into ingots, and the ingot which is formed by plastic working is subjected to solution treatment followed by age-hardening treatment to increase strength and elasticity.

REFERENCES:
patent: 3531337 (1970-09-01), Kawakatsu
patent: 3539308 (1970-11-01), Nowak
patent: 3794531 (1974-02-01), Markworth
I. J. Polmear: "The Aging Characteristics of Complex Al-Zn-Mg Alloys", J. Inst. Metals, 88, pp. 51-59 (1960).

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