CN106756282B - A kind of extrusion molding Al-Fe-Cu alloy and preparation method thereof - Google Patents

A kind of extrusion molding Al-Fe-Cu alloy and preparation method thereof Download PDF

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Publication number
CN106756282B
CN106756282B CN201710057840.5A CN201710057840A CN106756282B CN 106756282 B CN106756282 B CN 106756282B CN 201710057840 A CN201710057840 A CN 201710057840A CN 106756282 B CN106756282 B CN 106756282B
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alloy
extrusion molding
artificial aging
cast ingot
workpiece
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CN106756282A (en
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李润霞
任国庆
于宝义
郑黎
张琦
郝建飞
孙继鸿
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Shenyang University of Technology
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Shenyang University of Technology
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/16Alloys based on aluminium with copper as the next major constituent with magnesium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/18Alloys based on aluminium with copper as the next major constituent with zinc
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/002Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/057Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent

Abstract

A kind of extrusion molding Al-Fe-Cu alloy and preparation method thereof, belongs to aluminum alloy heat process field;The constituent and its mass percentage of the alloy are as follows: Fe:3.0~6.0%, Cu:2.0~5.0%, Zn:0.5~2.0%, Mn:0.2~0.5%, Mg:0.3~1.5%, surplus are Al and inevitable impurity;Preparation method: 1) pressing the composition proportion ingredient of extrusion molding Al-Fe-Cu alloy, and melting obtains Al-Fe-Cu alloy cast ingot;2) alloy cast ingot is preheated in certain temperature;3) alloy cast ingot is squeezed, and Al-Fe-Cu alloy bar material is made, batches after cooling;4) by alloy bar material, warm water is quenched after carrying out solution treatment;5) artificial aging is handled, and is air-cooled to room temperature, and extrusion molding Al-Fe-Cu alloy is made;Alloy microscopic structure of the present invention is obviously improved, and tensile strength is 184~245Mpa, and Brinell hardness is 63~70HB;It is energy saving this invention simplifies heat treatment process process, reduce production cost.

Description

A kind of extrusion molding Al-Fe-Cu alloy and preparation method thereof
Technical field
The invention belongs to aluminum alloy heat process fields, and in particular to a kind of extrusion molding Al-Fe-Cu alloy and its preparation side Method.
Background technique
Alfer also has other excellent performances, good corrosion resistance other than with aluminium alloy own advantages Energy, fabulous wearability and certain intensity etc., are gradually increasing its attention rate in industrial circle.Until 70 years 20th century Generation, alfer have been treated as a kind of alloy system gradually to be studied and be applied.Have density low in aluminium alloy, it is high resistance to It grinds, the Al-Fe alloy of corrosion resistance becomes the substitute of aerospace material.
Summary of the invention
It is an object of the invention to overcome general deformation Al-Fe-Cu alloy Cu element in conventional solid solution treatment process to go out The phenomenon that alloy mechanical property caused by being now enriched with is remarkably decreased provides a kind of extrusion molding Al-Fe-Cu alloy and its preparation Method;Short route heat treatment process is used in preparation method.
Extrusion molding Al-Fe-Cu alloy of the invention, constituent and its mass percentage are as follows: Fe:3.0~ 6.0%, Cu:2.0~5.0%, Zn:0.5~2.0%, Mn:0.2~0.5%, Mg:0.3~1.5%, surplus are Al and can not The impurity avoided.
Extrusion molding Al-Fe-Cu alloy of the invention, tensile strength be 184~245Mpa, Brinell hardness be 63~ 70HB。
The preparation method of extrusion molding Al-Fe-Cu alloy of the invention, includes the following steps:
Step 1, melting:
By the composition proportion ingredient of extrusion molding Al-Fe-Cu alloy, melting obtains Al-Fe-Cu alloy cast ingot;
Step 2, the pre-heat treatment:
By Al-Fe-Cu alloy cast ingot, at 380~550 DEG C, 2~4h is preheated;
Step 3, it squeezes:
(1) it by the Al-Fe-Cu alloy cast ingot after preheating, is squeezed, Al-Fe-Cu alloy bar material is made;Wherein, it squeezes Than being 20~140,5~12mm/s of extrusion speed, the dwell time is 10~30s;
(2) it by Al-Fe-Cu alloy bar material, is batched after cooling;
Step 4, solution treatment:
(1) the Al-Fe-Cu alloy bar material after batching carries out solution treatment, and solid solution temperature is 515~535 DEG C, The solution treatment time is 5~30min;
(2) it by the workpiece after solution treatment, is quenched with 60~80 DEG C of warm water;
Step 5, artificial aging:
(1) by quenched workpiece, artificial aging processing is carried out, artificial aging temperature is 155~175 DEG C, artificial aging Time is 4~8h;
(2) by the workpiece after artificial aging, it is air-cooled to room temperature, extrusion molding Al-Fe-Cu alloy is made.
In the preparation method of above-mentioned extrusion molding Al-Fe-Cu alloy of the invention:
The step 1, smelting temperature are 720~750 DEG C.
In the step 4, according to the volumetric surface of profile product, with due regard to heat conduction time, accordingly extends test specimen in furnace The time of interior solution treatment.
In the step 5, artificial aging processing is carried out using resistance aging furnace, is air-cooled to room temperature after coming out of the stove.
Extrusion molding Al-Fe-Cu alloy of the invention and preparation method thereof, compared with prior art, has the beneficial effect that
(1) of the invention, extrusion forming Al-Fe-Cu alloy is heat-treated using short route heat treatment process, was both avoided Mechanical property caused by traditional T6 technique heat treatment improves not significant, so that alloy property has been obtained further raising, again Heat treatment process process is simplified, it is significantly energy saving, reduce production cost;
(2) of the invention, while meeting the requirement of alloy service performance, heat treatment process is simplified, alloy is improved Heat treatment production efficiency, it is significant for the production application of extrusion molding Al-Fe-Cu alloy;
(3) alloy of the present invention, microscopic structure are obviously improved, and mechanical property has significant raising.
(4) preparation method of the present invention, technological operation is simple, can preferably be applied in actual production.
Detailed description of the invention
The tissue picture of extrusion molding Al-Fe-Cu alloy prepared by Fig. 1 embodiment of the present invention 1;Wherein, (a) and (b) is right Answer different amplification factors;
The tissue picture of the quenched workpiece of 1 step 4 of Fig. 2 embodiment of the present invention preparation;Wherein, it (c) is corresponded to not with (d) Same amplification factor.
Specific embodiment
Embodiment 1
Extrusion molding Al-Fe-Cu alloy of the invention, constituent and its mass percentage are as follows: Fe:5.5%, Cu: 4.0%, Zn:2.0%, Mn:0.5%, Mg:0.4%, surplus are Al and inevitable impurity.
The preparation method of extrusion molding Al-Fe-Cu alloy of the invention, includes the following steps:
Step 1, melting:
By the composition proportion ingredient of extrusion molding Al-Fe-Cu alloy, at 720 DEG C, melting obtains the casting of Al-Fe-Cu alloy Ingot;
Step 2, the pre-heat treatment:
By Al-Fe-Cu alloy cast ingot, at 400 DEG C, 4h is preheated;
Step 3, it squeezes:
By extrusion die in 400 DEG C of preheating 4h, after preheating, mold is fitted into horizontal extruder;
By the Al-Fe-Cu alloy cast ingot after preheating, be put into extrusion die be squeezed into Al-Fe-Cu alloy bar material (having a size of Φ 20mm), extrusion forming workpiece is made;Wherein, extrusion ratio 40;
By Al-Fe-Cu alloy bar material, preparation solution treatment is rolled into a roll after cooling;
Step 4, solution treatment:
(1) the Al-Fe-Cu alloy bar material after batching, carries out solution treatment, and solid solution temperature is 525 DEG C, at solid solution The reason time is 30min;
(2) it by the workpiece after solution treatment, is quenched after quick tapping with 60 DEG C of warm water;
The tissue picture of quenched workpiece is as shown in Figure 2;
Step 5, artificial aging:
(1) by quenched workpiece, artificial aging processing is carried out using resistance aging furnace, artificial aging temperature is 165 DEG C, The artificial aging time is 8h;
(2) by the workpiece after artificial aging, it is air-cooled to room temperature after coming out of the stove, extrusion molding Al-Fe-Cu alloy is made.
The tissue picture of extrusion molding Al-Fe-Cu alloy manufactured in the present embodiment is as shown in Figure 1;The tension of the alloy is strong Degree is 222Mpa, Brinell hardness 65HB.
Embodiment 2
Extrusion molding Al-Fe-Cu alloy of the invention, constituent and its mass percentage are as follows: Fe:6.0%, Cu: 5.0%, Zn:2.0%, Mn:0.5%, Mg:1.5%, surplus are Al and inevitable impurity.
The preparation method of extrusion molding Al-Fe-Cu alloy of the invention, includes the following steps:
Step 1, melting:
By the composition proportion ingredient of extrusion molding Al-Fe-Cu alloy, at 750 DEG C, melting obtains the casting of Al-Fe-Cu alloy Ingot;
Step 2, the pre-heat treatment:
By Al-Fe-Cu alloy cast ingot, at 550 DEG C, 2h is preheated;
Step 3, it squeezes:
By extrusion die in 400 DEG C of preheating 4h, after preheating, mold is fitted into horizontal extruder;
By the Al-Fe-Cu alloy cast ingot after preheating, be put into extrusion die be squeezed into Al-Fe-Cu alloy bar material (having a size of Φ 20mm), extrusion forming workpiece is made;Wherein, extrusion ratio 80;
By Al-Fe-Cu alloy bar material, preparation solution treatment is rolled into a roll after cooling;
Step 4, solution treatment:
(1) the Al-Fe-Cu alloy bar material after batching, carries out solution treatment, and solid solution temperature is 525 DEG C, at solid solution The reason time is 20min;
(2) it by the workpiece after solution treatment, is quenched after quick tapping with 60 DEG C of warm water;
Step 5, artificial aging:
(1) by quenched workpiece, artificial aging processing is carried out using resistance aging furnace, artificial aging temperature is 170 DEG C, The artificial aging time is 6h;
(2) by the workpiece after artificial aging, it is air-cooled to room temperature after coming out of the stove, extrusion molding Al-Fe-Cu alloy is made.
The tensile strength of extrusion molding Al-Fe-Cu alloy manufactured in the present embodiment is 245Mpa, Brinell hardness 70HB.
Embodiment 3
Extrusion molding Al-Fe-Cu alloy of the invention, constituent and its mass percentage are as follows: Fe:3.0%, Cu: 2.0%, Zn:0.5%, Mn:0.2%, Mg:0.3%, surplus are Al and inevitable impurity.
The preparation method of extrusion molding Al-Fe-Cu alloy of the invention, includes the following steps:
Step 1, melting:
By the composition proportion ingredient of extrusion molding Al-Fe-Cu alloy, at 725 DEG C, melting obtains the casting of Al-Fe-Cu alloy Ingot;
Step 2, the pre-heat treatment:
By Al-Fe-Cu alloy cast ingot, at 500 DEG C, 3h is preheated;
Step 3, it squeezes:
By extrusion die in 400 DEG C of preheating 4h, after preheating, mold is fitted into horizontal extruder;
By the Al-Fe-Cu alloy cast ingot after preheating, be put into extrusion die be squeezed into Al-Fe-Cu alloy bar material (having a size of Φ 20mm), extrusion forming workpiece is made;Wherein, extrusion ratio 140;
By Al-Fe-Cu alloy bar material, preparation solution treatment is rolled into a roll after cooling;
Step 4, solution treatment:
(1) the Al-Fe-Cu alloy bar material after batching, carries out solution treatment, and solid solution temperature is 525 DEG C, at solid solution The reason time is 15min;
(2) it by the workpiece after solution treatment, is quenched after quick tapping with 60 DEG C of warm water;
Step 5, artificial aging:
(1) by quenched workpiece, artificial aging processing is carried out using resistance aging furnace, artificial aging temperature is 175 DEG C, The artificial aging time is 5h;
(2) by the workpiece after artificial aging, it is air-cooled to room temperature after coming out of the stove, extrusion molding Al-Fe-Cu alloy is made.
The tensile strength of extrusion molding Al-Fe-Cu alloy manufactured in the present embodiment is 190Mpa, Brinell hardness 63HB.

Claims (2)

1. a kind of preparation method of extrusion molding Al-Fe-Cu alloy, which comprises the steps of:
Step 1, melting:
By the composition proportion ingredient of extrusion molding Al-Fe-Cu alloy, Al-Fe-Cu alloy cast ingot is obtained in 720 ~ 750 DEG C of meltings; Wherein, the constituent and its mass percentage of the alloy are as follows: Fe:3.0 ~ 6.0%, Cu:2.0 ~ 5.0%, Zn:0.5 ~ 2.0%, Mn:0.2 ~ 0.5%, Mg:0.3 ~ 1.5%, surplus are Al and inevitable impurity;
Step 2, the pre-heat treatment:
By Al-Fe-Cu alloy cast ingot, at 380 ~ 550 DEG C, 2 ~ 4h is preheated;
Step 3, it squeezes:
(1) it by the Al-Fe-Cu alloy cast ingot after preheating, is squeezed, Al-Fe-Cu alloy bar material is made;Wherein, extrusion ratio It is 20 ~ 140,5 ~ 12mm/s of extrusion speed, the dwell time is 10 ~ 30s;
(2) it by Al-Fe-Cu alloy bar material, is batched after cooling;
Step 4, solution treatment:
(1) the Al-Fe-Cu alloy bar material after batching carries out solution treatment, and solid solution temperature is 515 ~ 535 DEG C, solid solution The processing time is 5 ~ 30min;
(2) it by the workpiece after solution treatment, is quenched with 60 ~ 80 DEG C of warm water;
Step 5, artificial aging:
(1) by quenched workpiece, artificial aging processing is carried out, artificial aging temperature is 155 ~ 175 DEG C, the artificial aging time For 4 ~ 8h;
(2) by the workpiece after artificial aging, it is air-cooled to room temperature, extrusion molding Al-Fe-Cu alloy is made;Wherein, extrusion molding The tensile strength of Al-Fe-Cu alloy is 184 ~ 245Mpa, and Brinell hardness is 63 ~ 70HB.
2. the preparation method of extrusion molding Al-Fe-Cu alloy according to claim 1, which is characterized in that the step 5 In, artificial aging processing is carried out using resistance aging furnace, is air-cooled to room temperature after coming out of the stove.
CN201710057840.5A 2017-01-23 2017-01-23 A kind of extrusion molding Al-Fe-Cu alloy and preparation method thereof Active CN106756282B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7625454B2 (en) * 2004-07-28 2009-12-01 Alcoa Inc. Al-Si-Mg-Zn-Cu alloy for aerospace and automotive castings
CN101979692B (en) * 2010-11-24 2012-05-30 中国兵器工业第五九研究所 Preparation process of Al-Zn-Mg-Cu aluminum alloy with ultra-high strength
CN102011037B (en) * 2010-12-10 2013-04-24 北京工业大学 Rare earth Er microalloyed Al-Zn-Mg-Cu alloy and preparation method thereof
CN103160713B (en) * 2011-12-08 2015-04-15 沈阳工业大学 Semi-solid extrusion of hypereutectic Al-Fe alloy, and heat treatment method
CN103014459A (en) * 2012-12-21 2013-04-03 中南大学 High-Zn, high-Mg and low-Cu ultrahigh-strength corrosion-resisting aluminum alloy and heat treatment method

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