SU263885A1 - - Google Patents

Description

Isabretenne belongs to the field of non-ferrous metallurgy, namely "the search for copper-based alloys for instrumentation.

Known domestic bronze BrB2 and BRBNT, containing beryllium, nickel, and titanium.

In order to further increase the elastic and strength properties, as well as the relaxation resistance, it is proposed to introduce these alloys s 0.02-1% magnesium.

The alloy has the following chemical composition (%):

beryllium -2,6

magnesium 0.02-1

nickel 0.1 -1

copper steel.

In the alloy, titanium may additionally be present in an amount of 0.01-0.5%.

In comparison with the known alloys of the same designation, the described alloy has a significantly higher elastic limit, fatigue strength, and relaxation resistance (1.5–3 times) under cyclic and prolonged static loading, both under normal (20 ° C) and under elevated (100 ° C) temperatures. Bernlli bronze of the proposed composition is characterized by

also more uniform and fine-grained structure.

The change in the physicomechanical properties of beryllium bronze when it is doped with magnesium (after quenching and aging at 320 ° C for 4-6 hours is shown in the table.

The proposed alloy is intended for the manufacture of elastic elements and other critical parts in the instrument-making industry, the radio-electronic and electrotechnical industry, and other parts of the technology. 3 Subject of the invention 1. A high-strength copper-based alloy containing beryllium and nickel, characterized in that, in order to improve the physical and mechanical properties, magnesium is introduced into it at a proportion of components (4%): 4 beryllium - , b, nickel, 0.1 -l magnesium, 0.0021 copper-steel, 2. Alloy according to claim I, characterized in that 0.01-0.5% of titanium is additionally introduced into it.