CN109023186A - A method of improving casting beryllium alumin(i)um alloy elongation percentage - Google Patents
A method of improving casting beryllium alumin(i)um alloy elongation percentage Download PDFInfo
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- CN109023186A CN109023186A CN201810944759.3A CN201810944759A CN109023186A CN 109023186 A CN109023186 A CN 109023186A CN 201810944759 A CN201810944759 A CN 201810944759A CN 109023186 A CN109023186 A CN 109023186A
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- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
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Abstract
A method of improving casting beryllium alumin(i)um alloy elongation percentage comprising the steps of: (1) be processed by shot blasting to cast(ing) surface, be fitted into hot isostatic pressing furnace after removing surface impurity processing；(2) initial pressure is poured into furnace, is warming up to 500 DEG C with≤5 DEG C/min heating rate, is kept the temperature 30 minutes；(3) it is continuously heating to identical heating rate: 590 ± 10 DEG C, making hip treatment pressure 110-130MPa, handle time 150--180min；(4) after being cooled to 200 DEG C after having handled with 5 DEG C/min of <, power-off cooling.Hot isostatic pressing used medium is argon gas in this method, the performance of beryllium alumin(i)um alloy phase interface is improved after handling by hot isostatic pressing casting, the intensity and elongation percentage for improving alloy, some casting flaws after processing in cast article are improved, and alloy compactness also increases.Alloy hip treatment alloy strength increases by 10% or so, and elongation percentage improves 60% or more.
Description
Technical field
The invention belongs to metal material fields, and in particular to a method of improve casting beryllium alumin(i)um alloy elongation percentage.
Background technique
Beryllium alumin(i)um alloy (contain beryllium 60-70%) concentrated beryllium rigidity and aluminium toughness the advantages of, there is light weight, specific strength
It is high, specific stiffness is high, thermal stability is good, high tenacity, high-modulus, it is anticorrosive the features such as, be a kind of important new structural material.Beryllium
Aluminium alloy also has excellent hot property and optical property, has obtained extensively in aero-space electronic equipment and in Gao Bomo frequency device
General application.Meanwhile in computer manufacturing, auto industry and high-precision, the at high speed civil fields such as electric welding machine-building
Beryllium alumin(i)um alloy has very strong competitiveness.
Precision casting technology is beryllium alumin(i)um alloy main preparation methods, since solubility very limited between beryllium and aluminium makes
Both materials are separated from each other in process of setting, it is easy to cause alloying component gross segregation problem.Also, two kinds of gold of aluminizing
Nearly 600 DEG C of the fusing point difference of category, beryllium alumin(i)um alloy has wide solidification temperature range, and about since 650 DEG C, this just causes metal
The problem of feeding, also results in shrink defects and hole in final products.It is generallyd use in technique preparation and adds the third yuan
Plain method improves castability to improve alloy castability method, enhances product performance, still, casts the performance of beryllium alumin(i)um alloy still
It is difficult to meet client's needs, is mainly shown as that product strength is low and unstable, elongation percentage is low.
Summary of the invention
The purpose of the present invention is the shortcomings low for casting beryllium alumin(i)um alloy elongation percentage, provide raising casting beryllium alumin(i)um alloy
The method of elongation percentage.
To achieve the above object, the technical solution of the present invention is as follows: a kind of improve the method for casting beryllium alumin(i)um alloy elongation percentage,
It is characterized in that, this method comprises the steps of:
(1) cast(ing) surface is processed by shot blasting, is fitted into hot isostatic pressing furnace after removing surface impurity processing；
(2) initial pressure is poured into furnace, is warming up to 500 DEG C with≤5 DEG C/min heating rate, is kept the temperature 30 minutes；
(3) it is continuously heating to identical heating rate: 590 ± 10 DEG C, making hip treatment pressure 110-130MPa, located
Manage time 150--180min；
(4) after being cooled to 200 DEG C after having handled with 5 DEG C/min of <, power-off cooling.
Hot isostatic pressing used medium is argon gas in this method.
The remarkable result that the present invention has is: after applying the present invention, improving after being handled by hot isostatic pressing casting
The performance of beryllium alumin(i)um alloy phase interface, thus improve the intensity and elongation percentage of alloy, meanwhile, it is cast after hip treatment
The some casting flaws made in product are improved, and alloy compactness also increases.By to alloy hip treatment
Alloy strength increases by 10% or so, and elongation percentage improves 60% or more.
Detailed description of the invention
Fig. 1 is performance comparison table before and after casting beryllium alumin(i)um alloy hip treatment.
Fig. 2 is density contrast table before and after casting beryllium alumin(i)um alloy hip treatment.
Specific embodiment
A specific embodiment of the invention is referring to embodiment.
Embodiment 1
It takes beryllium alumin(i)um alloy casting to be put into equal static pressure furnace, is filled with initial pressure, be warming up to 500 DEG C with 3 DEG C/min and keep the temperature 30 minutes
Afterwards, continue to be warming up to 585 DEG C with phase same rate, furnace pressure is 115MPa at this time, after keeping the temperature 150min, with 5 DEG C/min cooling
To 200 DEG C, power-off cooling.
Embodiment 2
It takes beryllium alumin(i)um alloy casting to be put into equal static pressure furnace, is filled with initial pressure, be warming up to 500 DEG C with 5 DEG C/min and keep the temperature 30 minutes
Afterwards, continue to be warming up to 600 DEG C with phase same rate, furnace pressure is 130MPa at this time, after keeping the temperature 1750min, with 3 DEG C/min drop
Temperature is to 200 DEG C, power-off cooling.
Above-described embodiment only elaborates the present invention, but the scope of the present invention is not limited to the above embodiments,
The various equivalent replacements that those of ordinary skill in the art make within the scope of knowledge can be considered the scope of the present invention
Within.
Claims (2)
1. a kind of method for improving casting beryllium alumin(i)um alloy elongation percentage, which is characterized in that this method comprises the steps of:
(1) cast(ing) surface is processed by shot blasting, is fitted into hot isostatic pressing furnace after removing surface impurity processing；
(2) initial pressure is poured into furnace, is warming up to 500 DEG C with≤5 DEG C/min heating rate, is kept the temperature 30 minutes；
(3) it is continuously heating to identical heating rate: 590 ± 10 DEG C, making hip treatment pressure 110-130MPa, located
Manage time 150--180min；
(4) after being cooled to 200 DEG C after having handled with 5 DEG C/min of <, power-off cooling.
2. the method according to claim 1, wherein hot isostatic pressing used medium is argon gas in this method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810944759.3A CN109023186A (en) | 2018-08-19 | 2018-08-19 | A method of improving casting beryllium alumin(i)um alloy elongation percentage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810944759.3A CN109023186A (en) | 2018-08-19 | 2018-08-19 | A method of improving casting beryllium alumin(i)um alloy elongation percentage |
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| CN109023186A true CN109023186A (en) | 2018-12-18 |
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| CN201810944759.3A Pending CN109023186A (en) | 2018-08-19 | 2018-08-19 | A method of improving casting beryllium alumin(i)um alloy elongation percentage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113652620A (en) * | 2021-08-16 | 2021-11-16 | 中南大学 | Preparation method of beryllium material with high micro-yield strength and high elongation, product and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3666442A (en) * | 1968-11-26 | 1972-05-30 | Dow Chemical Co | Preparation of beryllium |
| CN104726756A (en) * | 2015-04-13 | 2015-06-24 | 河南泛锐复合材料研究院有限公司 | High-performance beryllium-aluminum alloy and preparing method thereof |
| CN104942271A (en) * | 2015-06-30 | 2015-09-30 | 中国工程物理研究院材料研究所 | Beryllium-aluminum alloy sheet and manufacturing method thereof |
| CN108070764A (en) * | 2016-11-07 | 2018-05-25 | 江苏天诚车饰科技有限公司 | A kind of aluminizing manganese alloy and preparation method thereof |
-
2018
- 2018-08-19 CN CN201810944759.3A patent/CN109023186A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3666442A (en) * | 1968-11-26 | 1972-05-30 | Dow Chemical Co | Preparation of beryllium |
| CN104726756A (en) * | 2015-04-13 | 2015-06-24 | 河南泛锐复合材料研究院有限公司 | High-performance beryllium-aluminum alloy and preparing method thereof |
| CN104942271A (en) * | 2015-06-30 | 2015-09-30 | 中国工程物理研究院材料研究所 | Beryllium-aluminum alloy sheet and manufacturing method thereof |
| CN108070764A (en) * | 2016-11-07 | 2018-05-25 | 江苏天诚车饰科技有限公司 | A kind of aluminizing manganese alloy and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李军义等: "热等静压对铍铝合金组织及性能的影响", 《稀有金属与硬质合金》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113652620A (en) * | 2021-08-16 | 2021-11-16 | 中南大学 | Preparation method of beryllium material with high micro-yield strength and high elongation, product and application thereof |
| CN113652620B (en) * | 2021-08-16 | 2022-05-06 | 中南大学 | Preparation method of beryllium material with high micro-yield strength and high elongation, product and application thereof |
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