Aluminum alloy composite material with solid self-lubrication and preparation method thereof

Abstract

The invention discloses an aluminum alloy drill rod composite material with solid self-lubrication and a preparation method. The composite material consists of two parts: a substrate and a precursor,wherein the substrate comprises the following components in percentage by mass: 3.8-4.9% of Cu, 1.2-1.8% of Mg, 0.30-0.90% of Mn, and the balance of Al. The precursor is 20-30% of the substrate by mass; and the precursor is formed by a high-entropy alloy Ti2CoCrFeNiCu coating MoS2+C particles. The preparation method comprises the following steps: the precursor is prepared; the raw materials of thesubstrate are prepared; then, the precursor is injected in a solid particle fluidizing conveyor of spraying deposition equipment; finally, the raw materials of the substrate are molten by a cruciblesmelting furnace for flowing to a metal liquid pocket; and metal liquid and the precursor are synchronously atomized to form a solid-liquid atomization mixture for deposition to obtain a wear-resistance composite material casting blank with self-lubrication for extrusion molding.

Description

Technical field

[0001] The invention belongs to the field of materials, and specifically relates to an aluminum alloy composite material with solid self-lubricating properties and a manufacturing method. Background technique

[0002] With the growing population of social development, the demand for resources is increasing. At present, near-surface resources on land have been over-exploited. In order to meet the needs of social development, it is necessary to look for resources in the depths of the earth. As the drilling deepens, it is necessary to continuously connect drill pipes to extend the drill string, and its own weight continues to increase. It is very difficult to complete the drilling of deep and ultra-deep wells only by developing large-scale drilling rigs, especially when the drilling exceeds a certain depth. Time-dependent damage to the drill pipe, not to mention the existence of severe working conditions such as long open hole section, poor well wall stability, and h...

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