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A kind of ultra-high performance silicon-aluminum alloy and preparation method thereof

A silicon-aluminum alloy, ultra-high-performance technology, applied in the field of ultra-high-performance silicon-aluminum alloy and its preparation, can solve the problems of weak hardness and strength of silicon-aluminum alloy

Active Publication Date: 2021-08-24
JIANGSU HAORAN SPRAY FORMING ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness and strength of silicon-aluminum alloy prepared by spray forming technology are relatively weak.

Method used

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  • A kind of ultra-high performance silicon-aluminum alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: The mass percent composition of the silicon-aluminum alloy elements is: Si 16%, Mg 0.7%, Cu 3.5%, Fe 5.5%, and the balance is Al.

Embodiment 2

[0026] Embodiment 2: The mass percent composition of the silicon-aluminum alloy elements is: Si 18%, Mg 1.3%, Cu 4.5%, Fe 6.5%, and the balance is Al.

Embodiment 3

[0027] Embodiment 3: The mass percent composition of the silicon-aluminum alloy elements is: Si 17%, Mg 1.0%, Cu 4.0%, Fe 6.0%, and the balance is Al.

[0028] A preparation method of a novel silicon-aluminum alloy, comprising the steps of:

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Abstract

The invention provides an ultra-high-performance silicon-aluminum alloy and a preparation method thereof. The mass percentage composition of the silicon-aluminum alloy elements is: Si 16-18%, Mg 0.7-1.3%, Cu 3.5-4.5%, Fe 5.5-6.5% , the balance being Al. The method includes the following steps: the silicon aluminum alloy elements Si, Mg, Cu, Fe and Al are sprayed in proportion to obtain a primary product, the primary product is densified by hot processing and extruded, and the finished product is obtained by heat treatment in a T6 state. Beneficial effects brought by the invention: by adjusting the proportion of silicon-aluminum alloy elements and improving the method, the prepared novel silicon-aluminum alloy has higher tensile strength and higher hardness.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys and their processes, and in particular relates to an ultra-high-performance silicon-aluminum alloy and a preparation method thereof. Background technique [0002] Silicon aluminum alloy has the advantages of small specific gravity, low density, high thermal conductivity, low thermal expansion coefficient, good machining performance, good wear resistance and corrosion resistance, high surface hardness and certain high temperature strength. Therefore, it is widely used in electronic packaging materials for radar, wear-resistant materials for cylinder liners and connecting rods, pistons, rotor materials and other fields. In order to further improve the performance of silicon-aluminum alloys, those skilled in the art use spray forming technology to solve the traditional aluminum alloy preparation process problems. Coarse and irregular primary silicon transforms into uniformly distributed fine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22F1/043C22C1/02
CPCC22C1/026C22C21/02C22F1/043
Inventor 单嗣宏张豪范曦张桢吕天民
Owner JIANGSU HAORAN SPRAY FORMING ALLOY