SU1673621A1 - Aluminium-base powder alloy - Google Patents

Abstract

The invention relates to powder metallurgy, in particular to aluminum-based powder alloys, intended for use as a structural material. The aim of the invention is to increase the heat resistance of the alloy. The proposed powder alloy based on aluminum has the following composition, wt.%: Zinc 5 - 7, magnesium 2 - 3, copper 0.8 - 1.2

manganese 0.2 - 0.6

chromium 0.1 - 0.25

iron 0.1 - 0.2

Zirconium 0.2 - 0.3

carbon 1.0 - 1.2

oxygen 1 - 2, aluminum else. The strength at 400 ° C of the alloy is 180-190 kgf / mm ² . 1 tab.

Description

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The invention relates to powder metallurgy, in particular to aluminum-based powder alloys, intended for use as a structural material.

The purpose of the invention is to increase the heat resistance of the alloy.

The proposed powder alloy based on aluminum has the following composition, wt.%:

Zinc5-7

Magnesium2-3

Copper 0.8-1.2

Manganese 0.2-0.6

Chrome 0.1-0.25

Iron0,1-0,2

Zirconium 0.2-0.3

Carbon1.0-1.2

Oxygen1-2

Aluminum Else

Example In an agritritor, a mixture of the proposed alloy was subjected to a shock-abrasive impact according to the following technology, the rotation speed of the stirrer was 740-750 rpm, time 22-23 min, atmosphere - air; then the rotation speed of the stirrer is 500-600 rpm, the time is 4-6 h, the atmosphere is argon, the mixing ratio is 1:20

Then, the resulting powder was compacted into a blank matrix at a pressure of 5–6 t / cm2. Compressed blanks were subjected to extrusion and subsequent heat treatment according to standard technology.

In the table we give the compositions of the proposed and known alloys, as well as the results of tests of mechanical properties at 20 and 400 ° C.

As follows from the data presented in the table, the heat resistance of the proposed

about

x | GJ and Yu

Claims (2)

Claim Powder-based alloy based on aluminum. containing zinc, magnesium, copper, manganese-5 manganese, chromium, iron, characterized in that, in order to increase the heat resistance of the alloy, it additionally contains carbon, zirconium and oxygen in the following ratio of components, 10 wt.%: Zinc Magnesium Copper Manganese Chrome Iron Zirconium Carbon Oxygen Aluminum 5-7 2-3 0.8-1.2 0.2-0.6 0.1-0.25 0.1-0.2 0.2-0.3 1.0-1.2 1-2 Rest Composition The chemical composition of the alloy, wt., X Mg Si Mp SG F Zr ----- - ----- from _______ . - _______ ______ _____L 1 (from 5 2,5 2.0 0.4 0.2 0.2 - - nice) 2 5 2 0.8 0.2 0.1 0.1 0.2 1,0 3 6 2,5 1,0 0.4 0.125 0.15 0.25 1,1 4 7 3 1.2 0.6 0.25 0.2 0.3 1.2 Limit other Increase - ---—--- bridges. kgf / mm * heat Al S1 ----— -— strength 20 * C AOO’S at 400 * C Ost 0.1 500 25 1 Ost - 500 180 7.2 Ost - 510 135 7.4 Ost - 520 190 7.6 Compiled by E. Zalmanov Editor L. Veselovskaya Tehred M. Morgenthal Corrector E. Lonchakova Order 2898 Circulation 382 Subscription VNIIIPI of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology 113035, Moscow, Zh-35. Raushskaya nab., 4/5 Production and Publishing Plant Patent, Uzhgorod, Gagarin St. 101