High-strength high-toughness ultra-fine grain wrought aluminum alloy and preparation method thereof

A deformed aluminum alloy, high-strength toughness technology, applied in the field of high-strength toughness ultra-fine grain deformed aluminum alloy and its preparation, can solve the problems of unsatisfactory aluminum alloy strength and toughness, and achieve the effect of improving process plasticity and uniform grain distribution

Active Publication Date: 2016-03-16
TONGLING ZEHUI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The strength and toughness of aluminum alloys in the prior art cannot meet the needs of actual use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing a high-strength toughness ultra-fine grain deformed aluminum alloy proposed by the present invention comprises the following steps:

[0021] S1. Melting: Melting aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, aluminum-copper alloys, aluminum-manganese alloys, aluminum-magnesium alloys, chromium ingots, aluminum-zinc alloys and titanium ingots at 765°C to form alloy liquid, Then adjust the composition of the alloy liquid, the composition of the alloy liquid after regulation is: Si0.6%, Fe0.7%, Cu0.25%, Mn0.15%, Mg1.0%, Cr0.25%, Zn0 .25%, Ti0.2%, and the balance is Al; degassing refining is carried out at 800 ° C. During the degassing refining process, the amount of refining agent added is 0.65% of the furnace charge, and the hydrogen content of the alloy liquid after refining is 0.3ml / 100g, heat preservation and standing at 760°C for 20 minutes, and cast to obtain ingots;

[0022] S2, solid solution heat treatment: heat the ingot...

Embodiment 2

[0026] A method for preparing a high-strength toughness ultra-fine grain deformed aluminum alloy proposed by the present invention comprises the following steps:

[0027] S1. Melting: Melting aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, aluminum-copper alloys, aluminum-manganese alloys, aluminum-magnesium alloys, chromium ingots, aluminum-zinc alloys and titanium ingots at 750°C to form alloy liquid, Then the composition of the alloy liquid is regulated, and the composition of the alloy liquid after regulation is: Si0.4%, Fe0.8%, Cu0.15%, Mn0.20%, Mg0.8%, Cr0.35%, Zn0 .15%, Ti0.3%, and the balance is Al; degassing refining is carried out at 780°C. During the degassing refining process, the amount of refining agent added is 0.8% of the furnace charge, and the hydrogen content of the alloy liquid after refining is 0.2ml / 100g, heat preservation and standing at 780°C for 10 minutes, and cast to obtain ingots;

[0028] S2, solid solution heat treatment: heat th...

Embodiment 3

[0032] A method for preparing a high-strength toughness ultra-fine grain deformed aluminum alloy proposed by the present invention comprises the following steps:

[0033] S1. Melting: Melting aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, aluminum-copper alloys, aluminum-manganese alloys, aluminum-magnesium alloys, chromium ingots, aluminum-zinc alloys and titanium ingots at 780°C to form alloy liquid, Then adjust the composition of the alloy liquid, the composition of the alloy liquid after regulation is: Si0.8%, Fe0.6%, Cu0.35%, Mn0.10%, Mg1.2%, Cr0.15%, Zn0 .35%, Ti0.1%, and the balance is Al; degassing refining is carried out at 820 ° C. During the degassing refining process, the amount of refining agent added is 0.5% of the furnace charge, and the hydrogen content of the alloy liquid after refining is 0.4ml / 100g, heat preservation and standing at 740°C for 30 minutes, and cast to obtain ingots;

[0034] S2, solid solution heat treatment: heat the ingot ...

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PUM

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Abstract

The invention discloses high-strength high-toughness ultra-fine grain wrought aluminum alloy. The high-strength high-toughness ultra-fine grain wrought aluminum alloy is prepared from, by weight, 0.4%-0.8% of Si, 0.6%-0.8% of Fe, 0.15%-0.35% of Cu, 0.10%-0.20% of Mn, 0.8%-1.2% of Mg, 0.15%-0.35% of Cr, 0.15%-0.35% of Zn, 0.1%-0.3% of Ti and the balance Al. The invention further provides a preparation method of the high-strength high-toughness ultra-fine grain wrought aluminum alloy. The prepared aluminum alloy has excellent strength and toughness.

Description

technical field [0001] The invention relates to an aluminum alloy and a preparation method thereof, in particular to a high-strength toughness ultrafine grain deformed aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy is one of the most widely used light metals in metal materials, and its usage is second only to steel materials. According to the content of alloying elements and the characteristics of processing technology, aluminum alloys can be divided into two types: wrought aluminum alloys and cast aluminum alloys. Deformed aluminum alloy is a variety of plates, wires, profiles and bars formed after melting and casting, and then processed by hot extrusion and rolling. According to the composition and performance characteristics, wrought aluminum alloys can be divided into non-heat-treatable aluminum alloys and heat-treatable aluminum alloys. Deformed silver alloy has the characteristics of low density, light weight, good seali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C21/02C22C21/00C22C1/03C22C1/06C22F1/047C22F1/043C22F1/04
CPCC22C1/026C22C1/03C22C1/06C22C21/00C22C21/02C22C21/08C22F1/04C22F1/043C22F1/047
Inventor 李政源
Owner TONGLING ZEHUI ELECTRONICS
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