CN107142433A - The method that nonequilibrium freezing tissue recrystallization is realized using high undercooling combination rapid solidification - Google Patents
The method that nonequilibrium freezing tissue recrystallization is realized using high undercooling combination rapid solidification Download PDFInfo
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- CN107142433A CN107142433A CN201710569195.5A CN201710569195A CN107142433A CN 107142433 A CN107142433 A CN 107142433A CN 201710569195 A CN201710569195 A CN 201710569195A CN 107142433 A CN107142433 A CN 107142433A
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- alloy
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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
- C22F1/002—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
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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
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
Abstract
The invention discloses a kind of method that utilization high undercooling combination rapid solidification realizes nonequilibrium freezing tissue recrystallization, without by means of artificial plastic deformation, belonging to metal material processing technical field.Concretely comprise the following steps, binary single phase solid solution alloy is mutually melted in selection completely, melting is carried out to alloy using high-frequency electromagnetic induction melting, obtain supercooling alloy melt；Using Ga In liquid alloys as fast quenching medium, rapid quenching before recalescence is carried out to the supercooling alloy melt of certain initial degree of supercooling, spontaneous rapid solidification and plastic deformation occur for the subcooling films before recalescence after fast quenching, are then heat-treated, so as to realize the recrystallization of alloy nonequilibrium freezing tissue.High undercooling flash set technology and rapid solidification are combined by the present invention, utilize the spontaneous plastic deformation for realizing alloy microstructure of quick setting method, the processing method for greatly enriching and having promoted existing recrystallization process technology and regulation and control twin fraction, the various physical properties available for regulation and control metal or alloy material.
Description
Technical field
It is more particularly to a kind of real using high undercooling combination rapid solidification the invention belongs to metal material processing technical field
The method of existing nonequilibrium freezing tissue recrystallization.
Background technology
The application of recrystallization transformation in the industrial production is quite varied, and it can be used for regulating and controlling the crystal grain of alloy microstructure
Degree and texture etc., so as to obtain required performance.Current recrystallization theory and technology is all based on solid metallic or alloy exists
The recrystallization in post anneal is plastically deformed, explores and the demand for recrystallizing processing technology of design newly is very urgent.
The theory and experimental study of conventional nonequilibrium freezing and recrystallization are separate, do not consider non-flat in extreme nonequilibrium solidification process
The effect for the effect that weighs, causes the research of physical process on nonequilibrium freezing with solid state recrystallization the two close associations long-term
Make slow progress.
In traditional sense, Static Recrystallization is merely able to the quilt during the recrystallization annealing of cold deformation Fine Texture of Material
It was observed that.The recrystallization of plastic deforming metal or alloy microstructure has two significances in metal material processing field：
First, recrystallization process can soften and recover the toughness of low-temperature deformation material；Second, people can pass through recrystallization process control
The grain size of prepared material microstructure.Traditional recrystallization method is in a constant temperature to the alloy microstructure being manually plastically deformed
Recrystallization is realized in the lower annealing of degree.This traditional methods can expend ample resources.
In recent decades, the non-equilibrium property in developing rapidly with nonequilibrium freezing technology, material preparation process is significantly
Improve, substantial amounts of low-dimensional and metastable phase material are used widely.Non-equilibrium factor drives non-equilibrium microstructure in subsequent process
Further change to statenchyma, therefore, the non-equilibrium property of solidified structure directly influence the generation of the follow-up Solid State Transformation of material,
Physics, chemistry and the mechanical property of development and final material.Although people gradually recognize non-flat in nonequilibrium solidification process
The effect for the effect that weighs, but no matter on theoretical or experimental study, the inherent connection between nonequilibrium freezing and solid state recrystallization
System does not cause the extensive attention of people also.Due to lacking accurately and the true dendrite of system and dendrite interstitial fluid stream interphase interaction
Physical message, it is considered to the model of the dynamic nonequilibrium freezing dendrite plastic deformation of interdendritic flow caused by multiple physical factors
Change describes this physical problem and fails to solve always.In current most of reports, it can only mostly observe that latent heat of solidification discharges,
And lack the information of true dendrite and liquid stream interphase interaction, cause the related theoretical model of research of having no way of.Under normal circumstances, then
Crystallization is that being organized in for cold deformation metal or alloy occurs the forming core of undistorted new crystal grain and grown up under suitable annealing temperature.
Recrystallization is significant in metal material processing field.Except traditional recrystallization, people are in high undercooling list
In the rapid solidification structure of phase alloy liquid it is again seen that caused by recrystallization mechanism crystal grain refinement phenomenon, but the mechanism is not yet
Confirmed completely.Studied it has been shown that when melt undercooling degree Δ T exceed degree of supercooling critical value when, due to rapid solidification
The solidification stress produced is shunk by the threshold yield point more than alloy under the conditions of recalescence, and the primary dendrite in a mushy zone exists
Generation stress is cataclasm under the metamorphosis of liquid phase flowing and recrystallizes, and this causes the structure refinement of primary dendrite.When degree of supercooling is big
When critical undercooling limits, this will cause part primary dendrite skeleton to occur stress Sui Duan ﹑ plastic deformations and recrystallize.With degree of supercooling
Continue to increase, the stress in rapid solidification structure will continue to increase and then promote primary dendrite skeleton to occur the stress of higher degree
Sui Duan ﹑ are deformed and recrystallized, and the comprehensive function of these physical processes ultimately results in rapid solidification structure pattern for uniform equiax crystal
Tissue, therefore, the histioid formation are attributed to rapid solidification structure and recrystallized, i.e., the work of stress induced recrystallization mechanism
With.In summary, researcher gradually recognizes nonequilibrium freezing and the correlation of recrystallization transformation by numerous studies, but still
Do not studied systematically deeply from theoretical and experimental progress.
The factor for influenceing single-phase alloy system solidified structure recrystallization is attributed to degree of supercooling, alloying component, recrystallization heating power
, dynamics and the coefficient result of dependent variable, are tied again from this five factors to nonequilibrium freezing, cold plastic deformation and solid-state
Brilliant influence is set out, and is studied the crystal defect and recrystallization of single-phase alloy, is conducive to more subtly analyzing the formation finally organized
Reason and accurate control solidification, cold plastic deformation and solid state recrystallization.The method also extends to polynary single-phase alloy and eutectic
The research of alloy.Deepen people to nonequilibrium freezing technology and the theoretic knowledge of solid-state processing techniques correlation, it is most likely that band
The development of dynamic correlation theory and processing technology.Nonequilibrium freezing and solid state recrystallization transformation can be with interrelated.It is existing
There is research can only be using theoretical solidification and the recrystallization process to explain alloy system of independent solidification theory and recrystallization.This place
Reason has its weak point, such as in the nonequilibrium solidification process of alloy system, and precipitation, deformation and the recrystallization of solidified structure are often
It is simultaneous.Last century the fifties, Walker has found when investigating supercooling pure nickel liquation rapid solidification structure, works as liquation
Initial degree of supercooling before forming core exceedes a certain critical undercooling limits value Δ T*Afterwards, the grain size of microcosmic solidified structure will be reduced suddenly.
Subsequent numerous studies show that supercooling metal bath is interval interval in the presence of two class crystal grain refinements with high supercooling degree in low degree of supercooling.Pin
To the crystal grain refinement phenomenon of simple metal or alloy in different degree of supercoolings interval, it is thin that researcher proposes a variety of different crystal grain
Mechanism that change mechanism, such as dendrite remelting are cataclasm, explosion type Nucleation Mechanism and stress induced recrystallization mechanism etc..Then, researcher
Caused by first kind crystal grain refinement is found through experiments that being dendrite remelting, and Equations of The Second Kind grain refinement mechanism still suffers from dispute, and one
Some scholars are considered caused by remelting, and other scholars are then considered caused by stress induced recrystallization.It is well known that again
Crystallization is that plastic deformation meta-stable metal or alloy cross dynamics energy barrier to stable state by atom at a suitable temperature
The process of transformation, the process needs to consume mass energy.Usually, material plasticity deformation energy is higher, and its recrystallization temperature is lower,
The energy needed for correspondingly recrystallizing is lower therewith.By being plastically deformed (such as cold rolling) processing to nonequilibrium freezing tissue, in advance
Phase realizes that artificial plastic deformation ability and the physics of nonequilibrium freezing induced plastic deformation energy are superimposed, and improves in nonequilibrium freezing tissue
Total plastic deformation storage energy, so as to reduce Fine Texture of Material recrystallization temperature.Therefore, this method is expected that material can be reduced again
Crystallization temperature, promotes to save the energy, production technology innovation, reduces production cost.
The content of the invention
The present invention realizes the recrystallization of nonequilibrium freezing tissue using the method for high undercooling combination fast quenching, it is not necessary to by means of people
The recrystallization of alloy microstructure can be achieved in work plastic deformation.
Specifically, the utilization high undercooling combination rapid solidification that the present invention is provided realizes the side of nonequilibrium freezing tissue recrystallization
Method, implements in accordance with the following steps：
S1：Binary single phase solid solution alloy is mutually melted in selection completely, using high-frequency electromagnetic induction method of smelting to the alloy
Melting is carried out, supercooling alloy melt is obtained；
S2：The fast quenching of alloy melt is subcooled
By the use of Ga-In liquid alloys as fast quenching medium, recalescence is carried out to the supercooling alloy melt of certain initial degree of supercooling
Spontaneous rapid solidification occurs for preceding rapid quenching, the subcooling films before recalescence after fast quenching, so as to realize alloy nonequilibrium freezing
Tissue recrystallization.
Preferably, the alloy is Ni-20at.%Cu alloys, and liquidus temperature is 1680K.
Preferably, in S2, the supercooling alloy melt that 200K is more than or equal to initial degree of supercooling is carried out at the fast quenching before recalescence
Reason.
It is highly preferred that rapid quenching detailed process is：The Ga-In liquid alloys of certain volume are rapidly injected equipped with supercooling
In the crucible of alloy melt, while gathering the recalescence process data that alloy melt is subcooled using infrared radiation thermometer.
It is highly preferred that one gram of supercooling alloy melt of fast quenching at least needs 0.3mL Ga-In liquid alloys.
Preferably, in addition to S3：Annealing heat-treats step, annealing temperature be 973~1000K, annealing time be 30~
60min。
Compared with prior art, the present invention has the advantages that：
High undercooling flash set technology and rapid solidification are combined by the present invention, are closed using the spontaneous realization of quick setting method
The plastic deformation of golden microstructure.Specifically, due to the cooling effect of Ga-In liquid alloys, before supercooling alloy melt recalescence,
Rapid quenching is carried out by fast quenching medium of Ga-In liquid alloys, using quick-quenching method, alloy temperature is declined suddenly, so that soon
Rapid hardening induces the plastic deformation of alloy microstructure to be saved in room temperature admittedly, realizes supercooling single-phase alloy melt rapid solidification structure
Crystal growing process, the grain size very fine uniform for the alloy prepared are recrystallized, and can be occurred again in annealing process
Crystallographic grows.The method that the present invention is provided greatly enriches and promoted existing recrystallization process technology and regulation and control twin point
Several processing methods, this method can be used for regulating and controlling the correlated performance of metal or alloy material, thus with important production
Practice significance.
Brief description of the drawings
Fig. 1 is melt spun alloy melt recalescence-chilling temperature curve in 1- of embodiment of the present invention embodiments 2, wherein, Fig. 1-a
For the initial degree of supercooling 225K of embodiment 1 fast quenching Ni-20at.%Cu alloy melts recalescence-chilling temperature curve, Fig. 1-b are
The initial degree of supercooling 225K of embodiment 2 fast quenching Ni-20at.%Cu alloy melts recalescence-chilling temperature curve；
Fig. 2 is the substructure schematic diagram in melt spun alloy prepared by the embodiment of the present invention 1；Wherein, Fig. 2-a, Fig. 2-b Fig. 2-
C is the network of dislocation in deformed grains；Fig. 2-d are the SEAD style of a twin boundaries；
Fig. 3 is the micro-organization chart of rapid quenching of the present invention and the alloy after further annealing；Wherein, Fig. 3-a are
The micro-organization chart for the melt spun alloy that embodiment 1 is obtained, Fig. 3-b are that the melt spun alloy that embodiment 1 is obtained further makes annealing treatment
Micro-organization chart afterwards, Fig. 3-c are the micro-organization chart for the melt spun alloy that embodiment 2 is obtained, and Fig. 3-d are what embodiment 2 was obtained
Micro-organization chart after the further annealing of melt spun alloy；
Fig. 4 is the EBSD figures for the melt spun alloy that the embodiment of the present invention 1 is obtained；Wherein, Fig. 4-a be embodiment 1 obtain it is fast
The micro-organization chart of quenched alloy, Fig. 4-b are the crystal boundary figure of the microstructure for the melt spun alloy that embodiment 1 is obtained, and Fig. 4-c are implementation
The texture pattern of the microstructure for the melt spun alloy that example 1 is obtained, Fig. 4-d are that the microstructure for the melt spun alloy that embodiment 1 is obtained is brilliant
Boundary's distribution of orientations figure；
Fig. 5 is the EBSD figures for the melt spun alloy that the embodiment of the present invention 2 is obtained；Wherein, Fig. 5-a be embodiment 2 obtain it is fast
The micro-organization chart of quenched alloy, Fig. 5-b are the crystal boundary figure of the microstructure for the melt spun alloy that embodiment 2 is obtained, and Fig. 5-c are implementation
The texture pattern of the microstructure for the melt spun alloy that example 2 is obtained, Fig. 5-d are that the microstructure for the melt spun alloy that embodiment 2 is obtained is brilliant
Boundary's distribution of orientations figure.
Embodiment
In order that those skilled in the art more fully understand that technical scheme can be practiced, with reference to specific
The invention will be further described for embodiment, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
Mutually molten binary single phase solid solution Ni-20at.%Cu alloys are used as technic metal system, its liquid completely for the present embodiment selection
Liquidus temperature is 1680K, and melting is carried out to the alloy using high-frequency electromagnetic induction method of smelting, obtains supercooling alloy melt.
Volume 1.2ml or so Ga-In liquid alloys are rapidly injected in the crucible equipped with supercooling alloy melt (quality is 3g)；Simultaneously
Recalescence-chilling temperature data of alloy melt are acquired using infrared radiation thermometer.Fast quenching is used as by the use of Ga-In liquid alloys
Medium, 200K Ni-20at.%Cu alloy melts are more than or equal to initial degree of supercooling and carry out the rapid quenching before recalescence, again
Spontaneous rapid solidification occurs for the subcooling films before brightness after fast quenching.Fig. 1 closes for initial degree of supercooling 225K fast quenching Ni-20at.%Cu
Golden melt recalescence-chilling temperature curve, specifically, the temperature curve collected is as shown in Fig. 1-a, alloy melt is in natural cooling
When, due to the trigger action of fast quenching Ga-In liquid alloys, when being 225K quick recalescence, recalescence occur for melt cooling to degree of supercooling
Cause the very fast rise of alloy temperature.Subsequently, as the cooling effect of Ga-In liquid alloys, alloy temperature drops to suddenly again
900K or so.Due to the release of the close equilibrium freezing latent heat of residual solution, alloy temperature relatively slow rise again, final alloy is complete
Natural cooling after full solidification, obtains melt spun alloy.
We test at the microstructure of the alloy to the processing of the method for embodiment 1, and melt spun alloy microstructure is part
Recrystallized structure, thus intra-die includes a large amount of networks of dislocation.Plastic deformation ability is mainly deposited in the form of these networks of dislocation
, and sufficiently large thermodynamic driving force is provided for follow-up recrystallization process.Big supercooling degree single-phase alloy melt rapid solidification
When the dendritic network that is formed can occur notable plastic deformation, therefore be observed that intensive position in fast quenching microstructure intra-die
Wrong network (dislocation born of the same parents), it is specific as shown in Fig. 2 Fig. 2 prepares the substructure in alloy for embodiment 1；Wherein Fig. 2-a, Fig. 2-b scheme
2-c is the network of dislocation in deformed grains；Fig. 2-d are the SEAD style of a twin boundaries.
Further, the solidified structure that we are obtained using EBSD technologies to above-described embodiment 1 is characterized, and Fig. 4 is fast
The EBSD figures of quenched alloy；Wherein, Fig. 4-a are the micro-organization chart of melt spun alloy, and Fig. 4-b are the crystalline substance of the microstructure of melt spun alloy
Boundary's figure, Fig. 4-c are the texture pattern of the microstructure of melt spun alloy, and Fig. 4-d are the microstructure crystal boundary distribution of orientations of melt spun alloy
Figure；As seen in Figure 4, the crystal boundary of melt spun alloy microstructure is largely low-angle boundary.
Embodiment 2
The detailed process and embodiment 1 of the present embodiment are identical, the difference is that only, have used a small amount of Ga-In liquid alloys
It is used as fast quenching medium, about 0.4ml.Primarily to investigating fast quenching medium consumption to subcooling films (quality is 3g) rapid solidification
The influence of tissue.The recalescence collected-chilling temperature curve is as shown in Fig. 1-b, and alloy melt is naturally cooling to nucleation temperature
Shi Fasheng recalescence, with the very fast rise of alloy temperature, then due to the release of remaining liquid phase latent heat of solidification, the temperature of alloy is bent
There is platform in line, and after solidification terminates, alloy naturally cools to room temperature, obtains melt spun alloy.
Further, the solidified structure that we are obtained using EBSD technologies to above-described embodiment 2 is characterized, and Fig. 5 is fast
The EBSD figures of quenched alloy；Wherein, Fig. 5-a are the micro-organization chart of melt spun alloy, and Fig. 5-b are the crystalline substance of the microstructure of melt spun alloy
Boundary's figure, Fig. 5-c are the texture pattern of the microstructure of melt spun alloy, and Fig. 5-d are the microstructure crystal boundary distribution of orientations of melt spun alloy
Figure.As seen in Figure 5, the crystal boundary of alloy microstructure is largely high-angle boundary.
Embodiment 3
Mutually molten binary single phase solid solution Ni-20at.%Cu alloys are used as technic metal system, its liquid completely for the present embodiment selection
Liquidus temperature is 1680K, and melting is carried out to the alloy using high-frequency electromagnetic induction method of smelting, obtains supercooling alloy melt.
Supercooling alloy melt occurs spontaneous rapid solidification, subsequent alloy natural cooling, its recalescence-chilling temperature curve be similar to Fig. 1-
b.Simply compared with Example 2, the platform phase after recalescence is relatively longer.
Embodiment 4
The detailed process and embodiment 1 of the present embodiment are identical, the difference is that only, also add annealing heat-treats step
Suddenly, we test the microstructure for obtaining the melt spun alloy that embodiment 1 is obtained first, specifically as shown in Fig. 3-a, then to implementing
The melt spun alloy that example 1 is obtained carries out recrystallization annealing at a temperature of 973K, and annealing time is 30 minutes, obtained alloy it is microcosmic
Tissue is as shown in Fig. 3-b.It will be seen that alloy microstructure is further recrystallized, i.e., by without the new crystal grain of strain
Forming core, grow up and collide, its microstructure there occurs Perfect Reconstruction.
Embodiment 5
The detailed process and embodiment 2 of the present embodiment are identical, the difference is that only, also add annealing heat-treats step
Suddenly, we test the microstructure for obtaining the melt spun alloy that embodiment 2 is obtained first, specifically as shown in Fig. 3-c, then to implementing
The melt spun alloy that example 2 is obtained carries out recrystallization annealing at a temperature of 973K, and annealing time is 30 minutes, obtained alloy it is microcosmic
Tissue is as shown in Fig. 3-d.It will be seen that the microstructure of alloy does not almost change.
Further, we pass through the analysis to embodiment 4 and embodiment 5, it was confirmed that the melt spun alloy that embodiment 1 is provided
Structural transformation is caused by recrystallization process rather than grain growth process, compared with the alloy of the processing of embodiment 5, due to fast
Medium amount of quenching is bigger, and the recrystallization driving force (i.e. plastic energy) stored in alloy rapid solidification structure is much bigger, thus
Recrystallized in annealing process very notable.However, for the alloy of a small amount of Ga-In aluminium alloy fast quenchings in embodiment 2, its microcosmic group
The recrystallization driving force for knitting inside almost dissipates completely after recalescence in cooling procedure.Therefore, to the fast of the processing of embodiment 2
Quenched alloy carries out recrystallization annealing, and its microstructure has almost no change.
To sum up, the present invention using Ga-In alloy melts to high undercooling Ni-20at.%Cu alloy melts recalescence advance
Row fast quenching, observes significantly plastic deformation microstructure substructure, such as intensive network of dislocation in fast quenching microstructure.Enter one
Step, anneals, these microstructures there occurs higher degree to the partial, re-crystallization tissue formed under the conditions of these fast quenchings
Recrystallization.And the experiment of the isothermal annealing under the same terms is carried out to access expansion cools tissue, its tissue does not almost become
Change, this illustrates the plastic strain that the plastic energy of its microstructure internal reservoir is far smaller than inside melt spun alloy microstructure
Energy.Obviously, these experimental studies results disclose supercooling single-phase alloy generation crystal grain refinement phenomenon in big supercooling degree is interval
One of possible potential Physical Mechanism, i.e. recrystallization mechanism.Therefore, method greatly enriches and promoted existing recrystallization processing skill
The processing method of art and regulation and control twin fraction, the various physical properties available for regulation and control metal or alloy material.
Embodiment described above is only the preferred embodiment to absolutely prove the present invention and being lifted, and its protection domain is not limited
In this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, the protection in the present invention
Within the scope of, protection scope of the present invention is defined by claims.
Claims (6)
1. a kind of method that utilization high undercooling combination rapid solidification realizes nonequilibrium freezing tissue recrystallization, it is characterised in that tool
Body is implemented in accordance with the following steps：
S1：Binary single phase solid solution alloy is mutually melted in selection completely, and the alloy is carried out using high-frequency electromagnetic induction method of smelting
Melting, obtains supercooling alloy melt；
S2：The fast quenching of alloy melt is subcooled
By the use of Ga-In liquid alloys as fast quenching medium, the supercooling alloy melt of certain initial degree of supercooling is carried out before recalescence
Spontaneous rapid solidification occurs for rapid quenching, the subcooling films before recalescence after fast quenching, so as to realize alloy nonequilibrium freezing tissue
Recrystallization.
2. utilization high undercooling combination rapid solidification according to claim 1 realizes the side of nonequilibrium freezing tissue recrystallization
Method, it is characterised in that the alloy is Ni-20at.%Cu alloys, and liquidus temperature is 1683K.
3. utilization high undercooling combination rapid solidification according to claim 1 realizes the side of nonequilibrium freezing tissue recrystallization
Method, it is characterised in that in S2, the supercooling alloy melt that 200K is more than or equal to initial degree of supercooling is carried out at the fast quenching before recalescence
Reason.
4. utilization high undercooling combination rapid solidification according to claim 3 realizes the side of nonequilibrium freezing tissue recrystallization
Method, it is characterised in that rapid quenching detailed process is：
The Ga-In liquid alloys of certain volume are rapidly injected in the crucible equipped with supercooling alloy melt, while using infrared survey
The recalescence process data of warm instrument collection supercooling alloy melt.
5. utilization high undercooling combination rapid solidification according to claim 4 realizes the side of nonequilibrium freezing tissue recrystallization
Method, it is characterised in that one gram of supercooling alloy melt of fast quenching at least needs 0.3mL Ga-In liquid alloys.
6. utilization high undercooling combination rapid solidification according to claim 1 realizes the side of nonequilibrium freezing tissue recrystallization
Method, it is characterised in that also including S3：Annealing heat-treats step, annealing temperature be 973~1000K, annealing time be 30~
60min。
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| CN113373388A (en) * | 2021-04-29 | 2021-09-10 | 宝鸡文理学院 | Method for improving plasticity and toughness of boron-containing eutectic alloy by utilizing double-structure |
| CN115418588A (en) * | 2022-09-15 | 2022-12-02 | 西北工业大学 | Magnetic field deep supercooling treatment method for improving toughness of cobalt-based high-temperature alloy |
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| CN113373388A (en) * | 2021-04-29 | 2021-09-10 | 宝鸡文理学院 | Method for improving plasticity and toughness of boron-containing eutectic alloy by utilizing double-structure |
| CN113373388B (en) * | 2021-04-29 | 2022-08-05 | 宝鸡文理学院 | Method for improving plasticity and toughness of boron-containing eutectic alloy by utilizing double-structure |
| CN115418588A (en) * | 2022-09-15 | 2022-12-02 | 西北工业大学 | Magnetic field deep supercooling treatment method for improving toughness of cobalt-based high-temperature alloy |
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Application publication date: 20170908 |