CN110066941A - The strengthening and toughening treatment method of aluminium bronze - Google Patents
The strengthening and toughening treatment method of aluminium bronze Download PDFInfo
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- CN110066941A CN110066941A CN201910449826.9A CN201910449826A CN110066941A CN 110066941 A CN110066941 A CN 110066941A CN 201910449826 A CN201910449826 A CN 201910449826A CN 110066941 A CN110066941 A CN 110066941A
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- copper
- aluminium
- alloy
- niobium
- boron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Abstract
The present invention relates to a kind of strengthening and toughening treatment methods of aluminium bronze.Its mass percentage composition (%): O.03-O.1 Cu >=83.0, Fe3.0-5.0, Al10.0-11.5, Mn0.5, Ni1.5, (boron+molybdenum+niobium) total amount are；Other impurity contents≤0.5. manufacturing step are as follows: charging makes copper: aluminium weight ratio is less equal than 2, after heating fusing, and electrolytic manganese is added to lift temperature to 1300 DEG C after manganese fusing, add nickel, iron and boron, molybdenum, niobium.Fusing is deaerated with dry nitrogen, is poured at once.Tensile sample pours into greensand hull bottom mould.Ingot casting is heated to 650-750 DEG C, keeps the temperature 2-8 hours, water quenching or the cooling in nitrogen stream.The present invention is added to micro additive (B+Mo+Nb) in alloy smelting, refines crystal grain, is all replaced coarse column crystal with tiny equiax crystal, is changed simultaneously β phase or (α+γ2) form and distribution eliminate or reduce harmful γ in alloy structure by cooling to ingot casting water quenching or in nitrogen stream2The volume fractiion of phase improves UTS and YS, and the plasticity for making casting split increases, and improves the performance of alloy.Not only intensity is high for alloy of the present invention, but also ductility is good.
Description
Technical field
The present invention relates to a kind of strengthening and toughening treatment methods of aluminium bronze, specially based on aluminium bronze C95400 alloy
Strengthening and toughening treatment method obtains high tough aluminium bronze.
Background technique
C95400 alloy is cheap, there is high intensity, electric conductivity and thermal conductivity, processing performance, soldering property and corrosion resistance
It is excellent, its performance can be controlled by alloying in very large range, it is a kind of material that dosage is most in current microelectronic component
Material.
C95400 aluminium bronze is Cu-Al-Fe alloy, the industrial alloy important as one kind in aluminium bronze series,
Chemical component (%) specified in U.S.'s ASTMB148 standard are as follows: Cu83.0min, Fe3.0-5.0, Al10.0-11.5, Mn0.5
(maximum level of manganese element, max), the maximum level of Ni1.5(nickel element, max).Mechanical performance in Unite States Standard is minimum to be wanted
UTS (ultimate tensile strength) 515Mpa, 0.5%YS (yield strength) 205Mpa, EL (elongation after fracture) 12% is sought, mechanical performance is
It is obtained from independent cast-on test bar.Since alloy aluminium content is high, casting can cause β eutectoid under the conditions of the slow cooling of actual production
It is changed into hard and crisp α+γ2The mixture of phase, to cause ductility bad.Research shows that ([beauty] JM.Sadayapp etc.
AFSTransations2004), though C95400 alloy its ingredient how with casting shakeout time length, UTS and YS can be with
Retain.Have only ductility needs revised, drop to 2% rather than existing 12%, this is minimum, can pass through 11.5% He of aluminum content
Shakeout time 60 minutes guarantees.That should control aluminium content lower than 10.6% (aluminium content fluctuation range is in 10.0-10.6%),
The casting falling sand time solves the problems, such as a kind of bad means of alloy ductility within 10 minutes, this is in actual casting operation
In be impossible.
Chinese patent CN107881362A discloses a kind of high tough copper-nickel-tin alloy, and the alloy includes: 5 weights
Measure the nickel of % to 20 weight %；The tin of 5 weight % to 10 weight %；In addition to impurity and micro additive, surplus is copper；Wherein
The micro additive is selected from least one of the combination being made of boron, zirconium, iron, niobium (Nb), manganese and magnesium, and wherein institute
The 0.3 weight % that the respective content of micro additive is no more than the product is stated, micro additive includes boron, zirconium, iron and niobium, this
Amount additive slightly further enhances the formation of equiaxed crystal, and also reduce the Ni during solution heat treatment in matrix and
Difference between Sn diffusion rate.The alloy is by including solution annealing, cold working and metastable being hardened in interior working process step
It is formed.These processing steps include the first heat treatment/homogenization step, be then hot-working, solution annealing, cold working and
Second heat treatment/metastable cure step.But this alloy does not belong to aluminium bronze class.
CN108315733A discloses a kind of preparation method of aluminium bronze gradient coating, coating material include Al, Cu,
Nine kinds of elements of Fe, Ni, Mn, Si, Cr, B and Mo.This aluminium bronze does not have the examination of mechanical properties.
Summary of the invention
The object of the present invention is to provide a kind of strengthening and toughening treatment methods of aluminium bronze, specifically green based on C95400 aluminium
The strengthening and toughening treatment method of copper alloy.Add microelement in alloy smelting and by heating to ingot casting, keep the temperature, water quenching or
It is cooling in nitrogen stream, eliminate or reduce harmful γ in alloy structure2The volume fractiion of phase improves UTS and YS, and casting is made to split
Plasticity increases, and improves the performance of alloy.The present invention realizes the standard analysis alloy, and not only intensity is high, but also ductility is good.No
Only UTS and YS can retain, without the EL numerical value in revised standard.
The present invention provides a kind of strengthening and toughening treatment method of aluminium bronze, the aluminium bronze mass percent group
At (wt %): Cu >=83.0, Fe3.0-5.0, Al10.0-11.5, Mn max 0.5, Ni max 1.5, boron+molybdenum+niobium always contain
It measures O.03-O.1, other impurity content≤0.5.The sum of percentage of each component is 100%.
Manufacturing method includes the following steps:
1) by the chemical element component of the composition and its metering and consider scaling loss amount configure raw material；
2) raw material are packed into and are coated with the black-fead crucible of aluminium oxide, using medium-frequency induction furnace, charged as electrolytic tough pitch, pure
Aluminium makes copper: aluminium weight ratio is less equal than 2, is warming up to 1300 DEG C, after fusing, then plus electrolytic manganese electricity is added after manganese fusing
Solve nickel, the intermediate alloys such as pure iron and copper-boron (4%), copper-molybdenum (5%), copper-niobium (10%)；Any flux covering is not needed when fusing,
But the nitrogen of melting drying deaerates 10 minutes；
3) it is poured at once after being smelted into melt, 1150-1200 DEG C of pouring temperature, tensile sample pours into greensand hull bottom mould, is formed
Cast the sample that splits；
4) the casting sample that splits is heated in Muffle electric furnace, is warming up to 650-750 DEG C with furnace, keeps the temperature 2-8 hours, water quenching of coming out of the stove later
Or it is cooled to room temperature in nitrogen stream, it is therefore an objective to eliminate or reduce harmful γ in alloy structure2The volume fractiion of phase improves UTS
And YS, and the plasticity for making casting split increases.
The present invention provides a kind of strengthening and toughening treatment method of aluminium bronze, wherein Cu, Al, Fe, B, Mo and Nb are respectively
Electrolytic industry fine copper, aluminium, nickel, manganese, iron (blanking oil rustless iron wire or iron nail) and copper-boron (4%), copper-molybdenum (5%) and copper-
The intermediate alloys such as niobium (10%).
The tough aluminium bronze of height that the present invention obtains is a kind of Strengthening and Toughening processing side based on C95400 aluminium bronze
Method preparation.In the strengthening and toughening treatment method of the aluminium bronze, micro additive (B, Mo and Nb) is added in alloy smelting,
Crystal grain is refined, coarse column crystal is replaced all with tiny equiax crystal, changes simultaneously β phase or (α+γ2) form and distribution,
Improve the performance of alloy.By being heated to ingot casting, keep the temperature, water quenching or the cooling in nitrogen stream are eliminated or reduced in alloy structure
Harmful γ2The volume fractiion of phase improves UTS and YS, and the plasticity for making casting split increases, and further improves the property of alloy
Energy.The present invention realizes the standard analysis alloy, and not only intensity is high, but also ductility is good.Not only UTS and YS can retain, also not
It is easily controllable in actual casting operation with the EL numerical value in revised standard.
Specific embodiment
The present invention is described in further details below by specific embodiment, but the present invention is not only limited in detail below
Embodiment.Plurality of raw materials involved in the present invention is commercially available.Equipment used in experiment includes that test equipment is industry
General, operation and test condition are for industry standard and known knowledge or by equipment specification requirement.
The strengthening and toughening treatment method of aluminium bronze provided by the invention the following steps are included:
Ingredient is carried out by such as the following table 1 standard, raw material are electrolytic industry fine copper, aluminium, manganese, nickel and iron (the rustless iron wire of blanking oil
Or iron nail), the intermediate alloys such as copper-boron (4%wt), copper-molybdenum (5%wt) and copper-niobium (10%wt).In the heating of medium-frequency induction furnace
It is melted under air atmosphere in device；
Embodiment 1 (alloy of the present invention)
1) will be by Al10.9%, Fe3.8%, Ni1.1%, Mn is O.35%；The total amount of B+Mo+Nb is 0.08%(B 0.025%, Mo
0.025% and Nb0.03%), Cu surplus.Loading, which is coated on the black-fead crucible of aluminium oxide, melts, and uses medium-frequency induction furnace.Charging is
Electrolytic tough pitch and fine aluminium, make copper: aluminium weight ratio is less equal than 2, after heating fusing, and electrolytic manganese is added, after manganese fusing, heating
To 1300 DEG C, add electrolytic nickel, the intermediate alloys such as ingot iron and copper-boron, copper-molybdenum, copper-niobium.When fusing should not any flux cover
Lid, but the nitrogen of melting drying deaerates 10 minutes, is poured at once, 1150-1200 DEG C of pouring temperature.Tensile sample pours into green
In sand hull bottom mould.
Wherein, the raw material such as Cu, Al, Fe, Mn, Ni are respectively electrolytic industry fine copper, aluminium, nickel, manganese, and (blanking oil is rustless for iron
Iron wire or iron nail).In above-mentioned ingredient, B, Mo and Nb of addition are using copper-boron (4%wt), copper-molybdenum (5%wt) and copper-niobium
Intermediate alloys such as (10%wt) are as raw material, it is determined as A processing.
2) casting is splited or sample heats in Muffle electric furnace, be warming up to 720 DEG C with furnace, keep the temperature 6 hours, water quenching of coming out of the stove later
Or it is cooled to room temperature in nitrogen stream.Tensile sample (stick) normal diameter is 13mm, it is determined as B processing.
Above-described embodiment 1 is equivalent in ingredient: being added again in Al10.9%, Fe3.8%, Ni1.1%, MnO.35%, Cu surplus
The gross mass of B+Mo+Nb be 0.08%, while carry out A) processing and B) processing.Then it is surveyed according to GB/T228 tension test standard
Examination.It is shown in Table 1, different-alloy ingredient and performance compare.
Embodiment 2 (C95400 alloy)
By ingredient: B, Mo and Nb is not added in Al10.9%, Fe3.8%, Ni1.1%, MnO.35%, Cu surplus ingredient composition, only carries out
Step 1) operation in embodiment 1, is shown in Table 1 (C95400) according to GB/T228 tension test standard testing.
Comparing embodiment 1
By Al10.9%, Fe3.8%, Ni1.1%, MnO.35%, Cu surplus ingredient composition adds (B+Mo+Nb) total amount 0.08%, only into
Step 1) operation in row embodiment 1, A processing.1 is shown in Table according to GB/T228 tension test standard testing.
Comparing embodiment 2
By Al10.9%, Fe3.8%, Ni1.1%, MnO.35, Cu surplus ingredient composition only carries out the step 2) behaviour in embodiment 1
Make, B processing.1 is shown in Table according to GB/T228 tension test standard testing.
The shape and size that above-mentioned tension test casting is splited are made by American Standard ASTMB208-2004.
Table 1: different-alloy ingredient and performance compare
As it can be seen that alloy of the present invention carries out A on the basis of former C95400 alloying component), B) two Strengthening and Toughening processing, the in this way present invention
Alloy strength and ductility are all higher, and performance fullys meet ASTMB148 standard requirements, and former alloying component C95400 alloy or
Comparing embodiment handles its mechanical performance without Strengthening and Toughening processing or only progress one and is all difficult to meet standard requirements.
High-strength tenacity aluminium bronze of the invention is not limited to the ingredient and treatment process of specific embodiment, this embodiment party
Formula is only to aid in the understanding present invention, all are using the innovation and creation of present inventive concept in the column of protection.
Claims (6)
1. a kind of high tough aluminium bronze, which is characterized in that the mass percentage composition of the aluminium bronze: Cu >=83.0,
Fe3.0-5.0, Al10.0-11.5, Mn0.5 max, Ni max1.5, O.03-O.1, other impurity contain boron+molybdenum+niobium total content
Amount≤0.5；The sum of percentage of each component is 100%.
2. the tough aluminium bronze of height according to claim 1, which is characterized in that boron+molybdenum+niobium in the aluminium bronze
Total content is 0.08%.
3. a kind of high tough aluminium bronze, which is characterized in that the mass percentage composition of the aluminium bronze:
Al10.9%,Fe3.8%,Ni1.1%,Mn O.35%；B 0.025%, Mo 0.025%, Nb0.03%, Cu surplus and other
≤ 0.5% impurity.
4. the manufacturing method of the tough aluminium bronze of height described in claim 1, it is characterised in that the following steps are included:
1) by the chemical element component of the composition and its metering and consider scaling loss amount configure raw material；
2) raw material are packed into and are coated with the black-fead crucible of aluminium oxide, using medium-frequency induction furnace, in atmosphere in heating device
It is melted under atmosphere；Charging is copper+fine aluminium, makes copper: aluminium weight ratio is less equal than 2, is warming up to 1300 DEG C, after fusing,
Manganese addition again adds nickel, pure iron and copper-boron, copper-molybdenum, copper-niobium intermediate alloy after manganese fusing；Any flux is not needed when fusing to cover
Lid, but the nitrogen of melting drying deaerates 10 minutes；
3) it is poured at once after being smelted into melt, 1150-1200 DEG C of pouring temperature, tensile sample pours into greensand hull bottom mould, is formed
Ingot casting sample；
4) ingot casting sample is heated in Muffle electric furnace, is warming up to 650-750 DEG C with furnace, keeps the temperature 2-8 hours, water quenching of coming out of the stove later
Or it is cooled to room temperature in nitrogen stream, it is therefore an objective to eliminate or reduce harmful γ in alloy structure2The volume fractiion of phase improves
UTS and YS, and the plasticity for making casting split increases.
5. manufacturing method according to claim 4, it is characterised in that the copper, iron, is respectively that electrolytic industry is pure at aluminium
Copper, aluminium, nickel, manganese, iron.
6. manufacturing method according to claim 4, it is characterised in that the mass percent of boron is in copper-boron intermediate alloy
4%, surplus is copper；The mass percent of molybdenum is 5% in copper-molybdenum intermediate alloy, and surplus is copper；The matter of niobium in copper-niobium intermediate alloy
Measuring percentage is 10%, and surplus is copper.
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| CN201910449826.9A CN110066941A (en) | 2019-05-28 | 2019-05-28 | The strengthening and toughening treatment method of aluminium bronze |
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| CN201910449826.9A CN110066941A (en) | 2019-05-28 | 2019-05-28 | The strengthening and toughening treatment method of aluminium bronze |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676388A (en) * | 2020-08-01 | 2020-09-18 | 贵溪骏达特种铜材有限公司 | Method for improving mechanical property of aluminum bronze |
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| JP2001240924A (en) * | 2000-03-02 | 2001-09-04 | Chuetsu Metal Works Co Ltd | Aluminum bronze alloy for bottol making |
| CN101892401A (en) * | 2009-05-19 | 2010-11-24 | 天津市三条石有色金属铸造有限公司 | New multicomponent heterogeneous copper alloy for valve plate casting |
| CN103088231A (en) * | 2011-11-04 | 2013-05-08 | 天津市三条石有色金属铸造有限公司 | Aluminium bronze of sand-casting high-pressure pump head |
-
2019
- 2019-05-28 CN CN201910449826.9A patent/CN110066941A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001240924A (en) * | 2000-03-02 | 2001-09-04 | Chuetsu Metal Works Co Ltd | Aluminum bronze alloy for bottol making |
| CN101892401A (en) * | 2009-05-19 | 2010-11-24 | 天津市三条石有色金属铸造有限公司 | New multicomponent heterogeneous copper alloy for valve plate casting |
| CN103088231A (en) * | 2011-11-04 | 2013-05-08 | 天津市三条石有色金属铸造有限公司 | Aluminium bronze of sand-casting high-pressure pump head |
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| 夏国华等: "《现代热处理实用技术数据手册》", 31 January 1991, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676388A (en) * | 2020-08-01 | 2020-09-18 | 贵溪骏达特种铜材有限公司 | Method for improving mechanical property of aluminum bronze |
| CN111676388B (en) * | 2020-08-01 | 2021-09-17 | 贵溪骏达特种铜材有限公司 | Method for improving mechanical property of aluminum bronze |
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