CN108144988A - A kind of Zr base block amorphous alloys thermoplastic molding process determination method for parameter - Google Patents
A kind of Zr base block amorphous alloys thermoplastic molding process determination method for parameter Download PDFInfo
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- CN108144988A CN108144988A CN201711435750.1A CN201711435750A CN108144988A CN 108144988 A CN108144988 A CN 108144988A CN 201711435750 A CN201711435750 A CN 201711435750A CN 108144988 A CN108144988 A CN 108144988A
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- base block
- amorphous alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/10—Amorphous alloys with molybdenum, tungsten, niobium, tantalum, titanium, or zirconium or Hf as the major constituent
Abstract
The invention discloses a kind of Zr base block amorphous alloys thermoplastic molding process determination method for parameter.The present invention is to provide the Zr base block amorphous alloys for being doped with rare earth element, compared with the Zr base block amorphous alloys for being not added with rare earth element, have the advantages that big plasticity, high intensity at room temperature, chemical structural formula is：ZraCubNicAldEre；Wherein, 60≤a≤65；10≤b≤15；8≤c≤12；10≤d≤15；0≤e≤3.A diameter of 3 mm, ratio of height to diameter 2 made by by Zr base block amorphous alloys:1 test rod obtains the non-crystaline amorphous metal true stress-strain curve of the Zr base block amorphous alloys by thermal simulation experiment machine to compress test rod；Power dissipation efficiency value and Rheological Instability criterion value is obtained by calculation, establishes hot working chart；According to the Rheological Instability area during processing map analysis and determining materials hot deformation, the best thermoplastic molding process parameter of Zr base block amorphous alloys is formulated.
Description
Technical field
The invention belongs to Zr base noncrystal alloys Material Field more particularly to a kind of Zr base block amorphous alloys thermoplastics
The determining method of forming parameters.
Background technology
Figure of the hot working chart as evaluation material processing performance quality is design and optimization material thermoplastic molding process
Effective tool.Deformational behavior of the alloy material under the conditions of different distortion can be analyzed, and then pre- calorimetric adds using hot working chart
" stable region " and " instability area " during work optimizes thermoplastic molding process parameter with this.
At present, according to dynamic material model（DMM）The manuscript of foundation be successfully applied to analysis aluminium alloy, magnesium alloy and
The hot deformation behavior of the alloy materials such as titanium alloy and the optimization of thermal deformation technique parameter.However, add about block amorphous alloy heat
Research in terms of work figure is seldom.Since Zr base noncrystal alloys are a kind of extensive new materials of application prospect, not only there is height
A series of superiority such as intensity, high rigidity, higher fracture toughness and impact fracture performance, good corrosion resistance and wearability
Can, and with wide supercooling liquid phase region, there is good superplasticity in this section, show big elongation percentage, low stress and pole
The easily characteristics such as forming, but need deformation temperature and strain rate in stringent control process.The doping of rare earth element can make
Zr base noncrystal alloys to show the ratio showed in terms of excellent mechanical property, especially plasticity and intensity in room temperature more prominent,
If this Zr base noncrystal alloys for being doped with rare earth element also have fabulous crystallized ability in supercooling liquid phase region, this will be special
Producing for performance miniature parts provides new method and thinking, especially field of microelectronics, because the addition of rare earth element can
So that material obtains certain properties, such as superconductivity, hydrogen storage, memory function etc..
Invention content
The purpose of the present invention is to provide a kind of Zr base block amorphous alloys thermoplastic molding process determination method for parameter, purports
In the best thermal process parameter for obtaining this alloy.
The invention is realized in this way a kind of Zr base block amorphous alloys, the chemical structural formula of the alloy are：
ZraCubNicAldEre；Wherein, 60≤a≤65；10≤b≤15；8≤c≤12；10≤d≤15；0≤e≤3；The Zr matrix bodies
The best thermoplastic molding process parameter of non-crystaline amorphous metal is：Hot processing temperature is 400 DEG C~420 DEG C, and strain rate is 5 × 10-4s-1
~10-3s-1。
Preferably, the alloy is according to the atomic molar ratio dispensing formed, by copper mold casting it is smelting, inhale casting system
It is standby to obtain.
The present invention further discloses above-mentioned Zr base block amorphous alloys thermoplastic molding process determination method for parameter, the party
Method includes the following steps：
（1）Choose a diameter of 3 mm, the ratio of height to diameter 2 made by the Zr base block amorphous alloys:1 test rod, passes through heat
Simulated experiment machine obtains the non-crystaline amorphous metal true stress-true strain curve of the Zr base block amorphous alloys to compress test rod；
（2）Power dissipation efficiency value and Rheological Instability criterion value is obtained by calculation, establishes hot working chart；
（3）According to the Rheological Instability area during processing map analysis and determining materials hot deformation, Zr base block amorphous alloys are formulated
Best thermoplastic molding process parameter.
Preferably, in step（1）In, two end faces up and down of the test rod are smooth and smooth.
Preferably, in step（1）In, the running parameter of the thermal simulation experiment machine is：Hot simulation compression temperature range is
350 DEG C~500 DEG C, compression strain speed range is 10-5s-1~5 × 10-1s-1, deflection is 20%~80%, heating rate 5
DEG C/s~20 DEG C/s, keep the temperature 0.5~5Min, 1~0.3 support of vacuum degree.
The present invention overcomes the deficiencies of the prior art and provide a kind of Zr base block amorphous alloys and its thermoplastic molding process parameter
Determining method, the present invention using common metal Zr, Cu, Ni, Al and rare earth element er as key component, by changing Er elements
Content, and the excellent Zr of room-temperature mechanical property is prepared with copper mold castingaCubNicAldEre（60≤a≤65；10≤b≤
15；8≤c≤12；10≤d≤15；0≤e≤3）Block amorphous alloy, then hot-working is built by hot simulation compression experiment
Figure according to the Rheological Instability area during processing map analysis and determining materials hot deformation, formulates the best heat ductile forming work of material
Skill parameter.
Compared with the prior art the shortcomings that and deficiency, the invention has the advantages that：Zr matrixs provided by the invention
Body non-crystaline amorphous metal has the advantages that big plasticity, high intensity compared with the Zr base block amorphous alloys for being not added with rare earth element er, this
Outside, also with low glass transformation temperature Tg=330 DEG C~400 DEG C and wider glass transformation temperature section Tx=80 DEG C~110
DEG C, it is suitble to do superplastic forming experiment at a lower temperature.
Description of the drawings
Fig. 1 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6The as cast condition XRD diagram of non-crystaline amorphous metal at room temperature；
Fig. 2 is Zr61.71Cu14.14Ni9.86Al11.69Er2.6Non-crystaline amorphous metal is under 420 DEG C and differently strained rate in supercooling liquid phase region
The XRD spectrum of sample after compression；
Fig. 3 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6Room temperature stress-strain of the non-crystaline amorphous metal under different-diameter is bent
Line；
Fig. 4 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6Non-crystaline amorphous metal is respectively 410 DEG C and 420 DEG C in temperature, is strained
Rate is -5 × 10-4s-1Load-deformation curve；
Fig. 5 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6Non-crystaline amorphous metal is in the hot working chart of supercooling liquid phase region.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention provides a kind of rare earth doped element Er Zr base block amorphous alloy thermoplastic molding process parameter really
Determine method；Wherein,
The chemical structural formula of the Zr base block amorphous alloys is：ZraCubNicAldEre；Wherein, 60≤a≤65；10≤b≤15；
8≤c≤12；10≤d≤15；0≤e≤3；The alloy passes through copper mold casting according to the atomic molar ratio dispensing formed
A diameter of 3 mm, ratio of height to diameter 2 is prepared in smelting, suction casting:1 test rod；
This determines that method includes the following steps：
（1）The test rod made by above-mentioned Zr base block amorphous alloys is chosen, is obtained by thermal simulation experiment machine to compress test rod
To the true stress-true strain curve of the Zr base block amorphous alloys；Wherein, two end faces up and down of the test rod are smooth and light
It is sliding, but graphite lubrication is unsuitable for, primarily to preventing carburizing and destroying original structure form；The work of the thermal simulation experiment machine
It is as parameter：Hot simulation compression temperature range is 350 DEG C~500 DEG C, and compression strain speed range is 10-5s-1~5 × 10-1s-1,
Deflection is 20%~80%, and heating rate is 5 DEG C/s~20 DEG C/s, keeps the temperature 0.5~5Min, 1~0.3 support of vacuum degree；
（2）Power dissipation efficiency value and Rheological Instability criterion value is obtained by calculation, establishes hot working chart；
（3）According to the Rheological Instability area during processing map analysis and determining materials hot deformation, Zr base block amorphous alloys are formulated
Best thermoplastic molding process parameter.
According to the above method, with Zr61.71Cu14.14Ni9.86Al11.69Er2.6For non-crystaline amorphous metal, as shown in Fig. 1 ~ Fig. 5.
Fig. 1 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6The as cast condition XRD diagram of non-crystaline amorphous metal at room temperature；From Fig. 1
In it can be seen that there is not sharp crystallization peak in the XRD diffracting spectrums of the alloy, but it is distinctive " steamed bun peak " amorphous occur,
It is completely amorphous structure to illustrate prepared alloy.
Fig. 2 is Zr61.71Cu14.14Ni9.86Al11.69Er2.6Non-crystaline amorphous metal is under 420 DEG C and differently strained rate in supercooled liquid
The XRD spectrum of sample after phase region compression；As can be seen from Figure 2 the sample after hot compression also keeps amorphous state knot substantially
Structure.
Fig. 3 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6Room temperature stress of the non-crystaline amorphous metal under different sizes-should
Varied curve, table 1 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6Mechanical property ginseng of the non-crystaline amorphous metal under different sizes
Number, it is as shown in table 1 below：
Table 1
| d/mm | εp/% | σs/Mpa | σbc/Mpa | σc/Mpa |
| 2 | 34.87 | 1239 | 2400 | 2400 |
| 3 | 17.24 | 1579 | 2039 | 1935 |
| 4 | 3.61 | 1513 | 1677 | 1642 |
| 6 | 0 | 1568 | 1568 | 1568 |
Fig. 3 combinations table 1 can obtain：The Zr base noncrystal alloys have big plasticity and high intensity under small size, while are occurring
Plastic period shows apparent serrated plastic flow behavior and strong processing hardening phenomenon.
Fig. 4 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6Non-crystaline amorphous metal is 410 DEG C and 420 DEG C in temperature, strain
Rate is 5 × 10-4s-1Under the conditions of true stress-true strain curve, as can be seen from the figure had occurred during hot compression
Stress overshoot phenomenon and work softening phenomenon, and compression stress is less than 50MPa, is conducive to superplastic forming.
Fig. 5 is is obtained Zr61.71Cu14.14Ni9.86Al11.69Er2.6The hot working chart of non-crystaline amorphous metal, from fig. 5, it can be seen that
There is at 2 non-machinable area in figure：It is concentrated mainly on 430 DEG C of low strain rate area and 440 DEG C of high strain rate area.And
In 410~420 DEG C of sections, superplastic forming can be all carried out under high strain rate or low strain rate, in Large strain speed
Under rate（5×10-3s-1~10-2s-1）, peak efficiencies ranging from 35%~65%, the range of stress is 200~380MPa, to prevent mould
Have the deformation under high stress and influence forming quality, be not best super although superplastic forming can be carried out on this condition
It is moulded into shape parameter；Under low strain rate（5×10-4s-1~10-3s-1）, peak efficiencies ranging from 90%~130%, the range of stress
For 20~120MPa；It is 5 × 10 especially in strain rate-4s-1When, because of peak efficiencies η ＞ 100% under this condition, stress exists
50MP hereinafter, the mobility of sample is best at this time, under the stress of very little can superplastic forming, be best superplastic forming ginseng
Number.
Zr base block amorphous alloys provided by the invention not only have excellent room-temperature mechanical property and preferable thermostabilization
Property, and there is fabulous superplasticity, the peak value especially under conditions of low temperature low strain rate in glass transformation temperature section
Efficiency eta ＞ 100%, and the peak efficiencies η of general Zr base block amorphous alloys fully proves doping about between 20%~80%
The Zr base block amorphous alloys of rare earth element also have fabulous crystallized ability in glass transformation temperature section.In addition, rare earth
The addition of element can cause material to obtain certain properties, such as superconductivity, hydrogen storage, memory function etc., this will be spy
Different producing for performance miniature parts provides new method and thinking, especially field of microelectronics.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of Zr base block amorphous alloys, which is characterized in that the chemical structural formula of the alloy is：ZraCubNicAldEre；Its
In, 60≤a≤65；10≤b≤15；8≤c≤12；10≤d≤15；0≤e≤3；The best heat of the Zr base block amorphous alloys
Moulding forming parameters is：Hot processing temperature is 400 DEG C~420 DEG C, and strain rate is 5 × 10-4s-1~10-3s-1。
2. Zr base block amorphous alloys as described in claim 1, which is characterized in that the alloy is according to the atomic molar formed
Ratio dispensing, by copper mold casting it is smelting, inhale casting be prepared.
3. a kind of Zr base block amorphous alloys thermoplastic molding process determination method for parameter, which is characterized in that this method include with
Lower step：
（1）Choose a diameter of 3 mm, Gao Jing made by the Zr base block amorphous alloys described in claim 1 or claim 2
Than being 2:1 test rod obtains the non-crystaline amorphous metal of the Zr base block amorphous alloys by thermal simulation experiment machine to compress test rod
True stress-true strain curve；
（2）Power dissipation efficiency value and Rheological Instability criterion value is obtained by calculation, establishes hot working chart；
（3）According to the Rheological Instability area during processing map analysis and determining materials hot deformation, Zr base block amorphous alloys are formulated
Best thermoplastic molding process parameter.
4. thermoplastic molding process determination method for parameter as claimed in claim 3, which is characterized in that in step（1）In, it is described
Two end faces up and down of test rod are smooth and smooth.
5. thermoplastic molding process determination method for parameter as claimed in claim 3, which is characterized in that in step（1）In, it is described
The running parameter of thermal simulation experiment machine is：Hot simulation compression temperature range is 350 DEG C~500 DEG C, and compression strain speed range is
10-5s-1~5 × 10-1s-1, deflection is 20%~80%, and heating rate is 5 DEG C/s~20 DEG C/s, keeps the temperature 0.5~5Min, vacuum
Spend 1~0.3 support.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109468548A (en) * | 2019-01-04 | 2019-03-15 | 盘星新型合金材料(常州)有限公司 | A kind of width supercooling liquid phase region zirconium-base amorphous alloy |
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