CN106048483B - A kind of method of improvement CuNiMnFe alloy plasticity and toughness - Google Patents
A kind of method of improvement CuNiMnFe alloy plasticity and toughness Download PDFInfo
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- CN106048483B CN106048483B CN201610573586.XA CN201610573586A CN106048483B CN 106048483 B CN106048483 B CN 106048483B CN 201610573586 A CN201610573586 A CN 201610573586A CN 106048483 B CN106048483 B CN 106048483B
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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
- C22F1/08—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
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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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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Abstract
The invention discloses a kind of method of improvement CuNiMnFe alloy plasticity and toughness, solution treatment is carried out to the CuNiMnFe alloys after vacuum induction melting first, then the CuNiMnFe alloys after solution treatment are positioned in hot pressing die and carry out Ageing Treatment under compression, obtain the good CuNiMnFe alloys of plasticity and toughness.The inventive method, by applying an action of compressive stress in CuNiMnFe alloy aging processing procedures, due to temperature and the double action of compression, the original dendrite tissue of CuNiMnFe alloys has been refined, has regulated and controled the species of hardening constituent, quantity, pattern, size and orientation by changing the precipitation process of hardening constituent.CuNiMnFe alloys after Ageing Treatment under action of compressive stress also keep good plasticity and toughness in addition to very high intensity and hardness, and its tensile strength is being more than 6% up to more than 750MPa, elongation.
Description
Technical field
The invention belongs to alloy material Strengthening and Toughening field, and in particular to a kind of side of improvement CuNiMnFe alloy plasticity and toughness
Method.
Background technology
CuNiMnFe alloys belong to typical precipitation strength type alloy, are a kind of Novel high-elasticity high intensity polynary copper alloys
Material.The alloy is widely used in the fields such as manned space flight, satellite navigation system, coal seam exploitation, electronics industry, because it is in thing
Reason aspect of performance shows non-magnetic characteristic, thus is also widely used in terms of high intensity NULL.At present,
The schedule of reinforcement of CuNiMnFe alloys is mainly solution strengthening, the mode such as refined crystalline strengthening and precipitation strength, but due to CuNiMnFe
Alloy is a kind of multicomponent copper alloy, component segregation and thick dendrite easily occurs in process of setting, is additionally, since Fe and exists
Solid solubility in Cu differs greatly from high temperature to room temperature, cause in alloy Fe elements in temperature-fall period precipitation and with Mn element shapes
It is present in crystal boundary and interdendritic into intermetallic compound, although thus high intensity can be obtained by these schedule of reinforcements
CuNiMnFe alloys, but segregation of composition etc. has had a strong impact on alloy in the aggregation of this crystal boundary compound and alloy structure
Plasticity, cause brittle fracture often occurs during some important spare part uses, its elongation is less than 4%.
The content of the invention
It is an object of the invention to provide a kind of method of improvement CuNiMnFe alloy plasticity and toughness, solves existing schedule of reinforcement
The problem of lower CuNiMnFe alloy plasticity and toughness are relatively low.
The technical solution adopted in the present invention is a kind of method of improvement CuNiMnFe alloy plasticity and toughness, first to vacuum
CuNiMnFe alloys after induction melting carry out solution treatment, and the CuNiMnFe alloys after solution treatment then are positioned over into hot pressing
Ageing Treatment under compression is carried out in mould, obtains the good CuNiMnFe alloys of plasticity and toughness.
The features of the present invention also resides in,
The processing of CuNiMnFe alloy solid solutions：As cast condition CuNiMnFe alloys are positioned in batch-type furnace, set solid solubility temperature as
520 ± 3 DEG C, soaking time 60min, water quenching to room temperature.
The detailed process of CuNiMnFe alloy agings processing is under compression：CuNiMnFe alloys after solution treatment are put
It is placed in hot pressing die, then hot pressing die is put into atmosphere protection hot-pressed sintering furnace, whole ag(e)ing process is in H2Atmosphere is protected
Shield is lower to be completed, and heating 20min to aging temp is 430 ± 3 DEG C, is incubated 720min~2880min, hot-die is given in heating process
Tool 5~20MPa of pressurization, after the CuNiMnFe alloy aging times reach respective settings value, furnace cooling, cooling procedure is in N2Gas
Atmosphere protection is lower to be completed.
The invention has the advantages that a kind of method of improvement CuNiMnFe alloy plasticity and toughness of the present invention, by
Apply an action of compressive stress in CuNiMnFe alloy aging processing procedures, due to temperature and the double action of compression, refinement
The original dendrite tissue of CuNiMnFe alloys, regulates and controls the species of hardening constituent, quantity, shape by changing the precipitation process of hardening constituent
Looks, size and orientation.CuNiMnFe alloys after Ageing Treatment under action of compressive stress except with very high intensity with
Outside hardness, while good plasticity and toughness are also kept, its tensile strength is being more than 6% up to more than 750MPa, elongation.
Brief description of the drawings
Fig. 1 is without the CuNiMnFe alloy structures after pressure Ageing Treatment；
Fig. 2 is the CuNiMnFe alloy structures after Ageing Treatment under the compression of embodiment 2；
Fig. 3 is the CuNiMnFe strength of alloy curves after Ageing Treatment under the compression of embodiment 2.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The method that the present invention improves CuNiMnFe alloy plasticity and toughness, is carried out at solid solution to as cast condition CuNiMnFe alloys first
Reason, then the CuNiMnFe alloys after solution treatment are positioned in hot pressing die and carry out Ageing Treatment under action of compressive stress, are obtained
The CuNiMnFe alloy good to plasticity and toughness.
Concretely comprise the following steps：
Step 1, as cast condition CuNiMnFe alloys are positioned in batch-type furnace, set solid solubility temperature as 520 ± 3 DEG C, during insulation
Between be 60min, water quenching to room temperature, polished with sand paper standby behind surface；
Step 2, the CuNiMnFe alloys after solution treatment are positioned in hot pressing die, hot pressing die is then put into gas
In atmosphere protection hot-pressed sintering furnace, in order to prevent that CuNiMnFe alloys aoxidize in ag(e)ing process, to atmosphere protection hot pressed sintering
H is passed through in stove2, heating 20min to aging temp is 430 ± 3 DEG C, is incubated 720min~2880min, hot pressing is given in heating process
5~20MPa of mould pressurizing, after the CuNiMnFe alloy aging times reach respective settings value, furnace cooling, cooling procedure is in N2
Completed under atmosphere protection, obtain the good CuNiMnFe alloys of plasticity and toughness.
Ageing Treatment can refine CuNiMnFe alloy structures under action of compressive stress, while can change in alloy structure
The precipitation process of hardening constituent.In ageing process under action of compressive stress, different value of compressive stress can cause CuNiMnFe alloys
The tissue defects such as the dislocation of varying number are produced in tissue, so as to which the forming core for secondary phase and growth provide condition, because pressure should
Dynamic recovery and recrystallization can occur in ageing process for the double action of power and temperature, CuNiMnFe alloys so that close
Payment organization pattern is changed from original dendrite to equiax crystal, and then is combined raising with modes such as precipitation strengths by refined crystalline strengthening
CuNiMnFe alloy plasticities.
The method that the present invention improves CuNiMnFe alloy plasticity and toughness, the CuNiMnFe under action of compressive stress after Ageing Treatment are closed
Payment organization is evenly distributed, while also keeps higher intensity hardness to be reached as high as with good plasticity and toughness, its tensile strength
More than 880MPa, elongation are more than 6%, and which is simple to operate, strengthen significant effect, green.
Embodiment 1
The processing of CuNiMnFe alloy agings improves plasticity and toughness under action of compressive stress, and as cast condition CuNiMnFe alloys are processed into chi
Very little is 16mm × 16mm × 100mm cuboids；
CuNiMnFe alloys after processing are positioned in SX-10-12 chamber type electric resistance furnaces, set solid solubility temperature as 520 DEG C,
Soaking time is 60min, water quenching to room temperature, is polished with sand paper standby behind surface；
CuNiMnFe alloys after solution treatment are positioned over the hot-die in SLQ-16B type atmosphere protection hot-pressed sintering furnaces
In tool, in order to prevent alloy from aoxidizing, H is passed through into atmosphere protection hot-pressed sintering furnace2, heating 20min is to aging temp
430 DEG C, 1440min is incubated, hot pressing die pressurization 5MPa is given in insulating process, treats that the CuNiMnFe alloy aging times reach corresponding
After setting value, furnace cooling, cooling procedure is in N2Completed under atmosphere protection, obtain the good CuNiMnFe alloys of plasticity and toughness, its
Tensile strength is up to 750MPa, and elongation is up to 10%.
Embodiment 2
The processing of CuNiMnFe alloy agings improves plasticity and toughness under action of compressive stress, and as cast condition CuNiMnFe alloys are processed into chi
Very little is 16mm × 16mm × 100mm cuboids；
CuNiMnFe alloys after processing are positioned in SX-10-12 chamber type electric resistance furnaces, set solid solubility temperature as 517 DEG C,
Soaking time is 60min, water quenching to room temperature, is polished with sand paper standby behind surface；
CuNiMnFe alloys after solution treatment are positioned over the hot-die in SLQ-16B type atmosphere protection hot-pressed sintering furnaces
In tool, in order to prevent alloy from aoxidizing, H is passed through into atmosphere protection hot-pressed sintering furnace2, heating 20min is to aging temp
428 DEG C, 2160min is incubated, hot pressing die pressurization 15MPa is given in insulating process, treats that the CuNiMnFe alloy aging times reach phase
After answering setting value, furnace cooling, cooling procedure is in N2Completed under atmosphere protection, obtain the good CuNiMnFe alloys of plasticity and toughness,
Its tensile strength is up to 824MPa, and elongation is up to 9%.
Fig. 1 is without the CuNiMnFe alloy structures after pressure Ageing Treatment, and the growth of branch crystal type is presented.
Fig. 2 is the CuNiMnFe alloy structures after Ageing Treatment under the compression of embodiment 2, it can be seen that action of compressive stress
CuNiMnFe alloy structures are substantially refined after lower Ageing Treatment, are changed into equiax crystal from dendrite, tissue is more uniform.Due to
The collective effect of refined crystalline strengthening and precipitation strength, make CuNiMnFe alloys while high intensity is kept with higher elongation
Rate.
Fig. 3 is that the CuNiMnFe alloys under the compression of embodiment 3 after Ageing Treatment carry out stretching experiment, the tension obtained
Intensity curve, CuNiMnFe strength of alloy is 823.65MPa under embodiment as can see from Figure 3, and elongation is
8.64%.
Embodiment 3
The processing of CuNiMnFe alloy agings improves plasticity and toughness under action of compressive stress, and as cast condition CuNiMnFe alloys are processed into chi
Very little is 16mm × 16mm × 100mm cuboids；
CuNiMnFe alloys after processing are positioned in SX-10-12 chamber type electric resistance furnaces, set solid solubility temperature as 523 DEG C,
Soaking time is 60min, water quenching to room temperature, is polished with sand paper standby behind surface；
CuNiMnFe alloys after solution treatment are positioned over the hot-die in SLQ-16B type atmosphere protection hot-pressed sintering furnaces
In tool, in order to prevent alloy from aoxidizing, H is passed through into atmosphere protection hot-pressed sintering furnace2, heating 20min is to aging temp
433 DEG C, 1440min is incubated, hot pressing die pressurization 20MPa is given in insulating process, treats that the CuNiMnFe alloy aging times reach phase
After answering setting value, furnace cooling, cooling procedure is in N2Completed under atmosphere protection, obtain the good CuNiMnFe alloys of plasticity and toughness,
Its tensile strength is up to 880MPa, and elongation is up to 6%.
Embodiment 4
Under action of compressive stress CuNiMnFe alloy agings strengthen, by as cast condition CuNiMnFe alloys be processed into size for 16mm ×
16mm × 100mm cuboids；
CuNiMnFe alloys after processing are positioned in SX-10-12 chamber type electric resistance furnaces, set solid solubility temperature as 521 DEG C,
Soaking time is 60min, water quenching to room temperature, is polished with sand paper standby behind surface；
CuNiMnFe alloys after solution treatment are positioned over the hot-die in SLQ-16B type atmosphere protection hot-pressed sintering furnaces
In tool, in order to prevent alloy from aoxidizing, H is passed through into atmosphere protection hot-pressed sintering furnace2, heating 20min is to aging temp
427 DEG C, 2880min is incubated, hot pressing die pressurization 17.5MPa is given in insulating process, treats that the CuNiMnFe alloy aging times reach
After respective settings value, furnace cooling, cooling procedure is in N2Completed under atmosphere protection, obtain the good CuNiMnFe of plasticity and toughness and close
Gold.
Embodiment 5
Under action of compressive stress CuNiMnFe alloy agings strengthen, by as cast condition CuNiMnFe alloys be processed into size for 16mm ×
16mm × 100mm cuboids；
CuNiMnFe alloys after processing are positioned in SX-10-12 chamber type electric resistance furnaces, set solid solubility temperature as 519 DEG C,
Soaking time is 60min, water quenching to room temperature, is polished with sand paper standby behind surface；
CuNiMnFe alloys after solution treatment are positioned over the hot-die in SLQ-16B type atmosphere protection hot-pressed sintering furnaces
In tool, in order to prevent alloy from aoxidizing, H is passed through into atmosphere protection hot-pressed sintering furnace2, heating 20min is to aging temp
430 DEG C, 720min is incubated, hot pressing die pressurization 10MPa is given in insulating process, treats that the CuNiMnFe alloy aging times reach corresponding
After setting value, furnace cooling, cooling procedure is in N2Completed under atmosphere protection, obtain the good CuNiMnFe alloys of plasticity and toughness.
Claims (3)
- A kind of 1. method of improvement CuNiMnFe alloy plasticity and toughness, it is characterised in that after first to vacuum induction melting CuNiMnFe alloys carry out solution treatment, and then the CuNiMnFe alloys after solution treatment are positioned in hot pressing die and pressed Ageing Treatment under stress, obtain the good CuNiMnFe alloys of plasticity and toughness.
- 2. the method for improvement CuNiMnFe alloy plasticity and toughness according to claim 1, it is characterised in that the CuNiMnFe Alloy solid solution processing：As cast condition CuNiMnFe alloys are positioned in batch-type furnace, set solid solubility temperature as 520 ± 3 DEG C, soaking time For 60min, water quenching to room temperature.
- 3. the method for improvement CuNiMnFe alloy plasticity and toughness according to claim 1 or 2, it is characterised in that under compression CuNiMnFe alloy agings processing detailed process be：CuNiMnFe alloys after solution treatment are positioned in hot pressing die, Then hot pressing die is put into atmosphere protection hot-pressed sintering furnace, whole ag(e)ing process is in H2Complete, heat under atmosphere protection 20min is 430 ± 3 DEG C to aging temp, is incubated 720min~2880min, in heating process to hot pressing die pressurization 5~ 20MPa, after the CuNiMnFe alloy aging times reach respective settings value, furnace cooling, cooling procedure is in N2Under atmosphere protection Complete.
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| CN108690943B (en) * | 2018-05-29 | 2020-04-21 | 西安理工大学 | Method for improving mechanical property of Cu-Ni-Mn-Fe alloy |
| CN110804717A (en) * | 2019-11-20 | 2020-02-18 | 中南大学 | Method for refining grain structure of GH4169 alloy forging |
Citations (3)
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|---|---|---|---|---|
| CN101177049A (en) * | 2007-11-23 | 2008-05-14 | 中南大学 | Method for preparing Cu-TiNi composite material |
| CN102051563A (en) * | 2010-12-10 | 2011-05-11 | 燕山大学 | Aging process of 7075 aluminum alloy |
| CN105518166A (en) * | 2013-08-13 | 2016-04-20 | Jx日矿日石金属株式会社 | Copper alloy sheet having excellent conductivity and bending deflection factor |
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- 2016-07-20 CN CN201610573586.XA patent/CN106048483B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177049A (en) * | 2007-11-23 | 2008-05-14 | 中南大学 | Method for preparing Cu-TiNi composite material |
| CN102051563A (en) * | 2010-12-10 | 2011-05-11 | 燕山大学 | Aging process of 7075 aluminum alloy |
| CN105518166A (en) * | 2013-08-13 | 2016-04-20 | Jx日矿日石金属株式会社 | Copper alloy sheet having excellent conductivity and bending deflection factor |
Non-Patent Citations (4)
| Title |
|---|
| CuNiMnFe合金的性能测试及组织分析;金静静;《西安理工大学2008年度硕士学位论文》;20080304;全文 * |
| 微量硼添加对CuNiMnFe合金组织与性能的影响;邹军涛等;《中国有色金属学报》;20130430;第23卷(第4期);全文 * |
| 热处理工艺对CuNiMnFe合金性能的影响;尚再艳等;《稀有金属》;20090228;第33卷(第1期);全文 * |
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