CN1814851A - High-strength pulse-current pretreatment method for improving mechanical property of non-crystal alloy - Google Patents
High-strength pulse-current pretreatment method for improving mechanical property of non-crystal alloy Download PDFInfo
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- CN1814851A CN1814851A CN 200610011417 CN200610011417A CN1814851A CN 1814851 A CN1814851 A CN 1814851A CN 200610011417 CN200610011417 CN 200610011417 CN 200610011417 A CN200610011417 A CN 200610011417A CN 1814851 A CN1814851 A CN 1814851A
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Abstract
This invention relates to the dynamic performance of block non-crystal alloys and a method for improving it characterizing in applying high strength pulse current to process the block non-crystal alloy, connecting the output of a power supply with a sample of due processed block non-crystal alloys, in which, the current density is: j=50-4000A/mm<SUP>2</SUP>, the current pulse width: mum=10-200mums, pulse frequency: f=1-500Hz, process time: 2 seconds-10hours and the sample temperature: T<Yg-50deg.C, in which, Tg is the non-crystal transformation temperature of the sample.
Description
Technical field:
The invention belongs to the amorphous metallic material field.Being particularly related to mechanical property of non-crystal alloy and the method for improving mechanical property, is a kind of novel method that can improve the amorphous alloy material mechanical property.
Background technology:
Block amorphous alloy (being called bulk amorphous alloys or block metal glass again) is the novel alloy material with a lot of special excellent properties that year develops surplus in the of nearest 10, this alloy material is different from the traditional low-dimensional amorphous alloy material of amorphous thin ribbon, film, micro mist or the like, has the above macroscopical geometrical dimension of about 1mm.Because block amorphous alloy has intensity, solidity to corrosion and other functional performance that is much better than congruent crystal alloy, makes block amorphous alloy have significant application prospect.
Although block amorphous alloy has very high intensity, ductility is very poor, and most amount of plastic deformation all less than about 2%, makes the application of such material receive restriction in the known block amorphous alloy.Therefore explore that to improve block amorphous alloy significant to ductility.If can develop and can improve the non-crystaline amorphous metal mechanical property, keep the improved performance method of non-crystaline amorphous metal characteristic again, will be very meaningful.Have not yet to see and utilize high-strength pulse-current to handle the open report that block amorphous alloy improves the non-crystaline amorphous metal mechanical property.
Summary of the invention:
The objective of the invention is to propose to adopt high-strength pulse-current to handle bulk amorphous alloy to improve the novel method of block amorphous alloy material mechanical performance.It is characterized in that: adopt high-strength pulse-current to handle block amorphous alloy, under suitable technique parameter condition, the mechanical property of the block amorphous alloy after the processing is significantly improved.Therefore, present method can improve the mechanical property of block amorphous alloy, expands its Application Areas, promotes application prospect.
The technical parameter of this method and treatment process are:
1) adopts direct current pulse power source, provide greater than 10
3A peak pulse electric current;
2) at the feature of block amorphous alloy, select current density range: j=50～4000A/mm
2
3) current pulse width scope: μ=10～200 μ s;
4) current pulse frequency scope: f=1～500Hz;
5) technical parameter combination and treatment time are to guarantee that the amorphous crystallization neither taking place, can improve mechanical property again is target, treatment time scope: 2 seconds～10 hours;
The described the 5th) step described technical parameter combination is the control sample temperature with the control method that guarantees neither to take place the amorphous crystallization, can improve mechanical property again, be the temperature of test sample in the pulsed current treating processes, integrated pulse current technique parameter makes the temperature of processed bulk amorphous alloy sample must not be higher than its amorphous transition temperature (Tg) to subtract 50 degree (be T＜Tg-50 (℃)).Suitable sample temperature scope is: 60＜T＜Tg-50 (℃).
The described the 5th) described pulsed current technical parameter combination of step still can't be controlled when requiring by satisfied temperature, can adopt following forced cooling method cooling sample, and reach the temperature control requirement: (1) adopts forced air flow method cooling samples such as electric fan; (2) adopt the wet goods organic liquid to force cooling; (3) adopt water quench.
The invention has the beneficial effects as follows the block amorphous alloy that adopts high-strength pulse-current processing bulk amorphous alloy, obtains taking place remarkable structural relaxation, the remarkable improvement of mechanical property.
Specific implementation method:
Theoretical basis principle of the present invention is to utilize the interaction of electric current and atoms metal, promotes the atomic diffusion migration, promotes the non-crystaline amorphous metal structural relaxation, and the mechanical property of non-crystaline amorphous metal is improved.Concrete mode is to adopt high intense pulsed power supply, and the output terminal of power supply is connected with pending block amorphous alloy sample, handles then.
The technical parameter of this method and treatment process are:
1) adopts direct current pulse power source, provide greater than 10
3A peak pulse electric current;
2) at the feature of block amorphous alloy, select current density range: j=50～4000A/mm
2
3) current pulse width scope: μ=10～200 μ s;
4) current pulse frequency scope: f=1～500Hz.
5) treatment time scope: 2 seconds～10 hours;
In treating processes, in order to guarantee that sample the amorphous crystallization neither takes place, can improve mechanical property again, can realize by the control sample temperature, make the temperature of processed bulk amorphous alloy sample must not be higher than its amorphous transition temperature (Tg) and subtract 50 degree (be T＜Tg-50 (℃)).Suitable sample temperature scope is: 20 ℃＜T＜Tg-50 (℃).
The temperature controlling method can adopt following forced cooling method cooling sample, and reach the temperature control requirement: (1) adopts forced air flow method cooling samples such as electric fan; (2) adopt the wet goods organic liquid to force cooling; (3) adopt water quench.
Exemplifying specific embodiment is below further specified the present invention.
Embodiment:
One .ZrTiCuNiBe non-crystaline amorphous metal
(1) utilize high-strength pulse-current to Zr
41.3Ti
14.2Cu
12.8Ni
10.3Be
21.4Block amorphous alloy is handled, and the mechanical property of this block amorphous alloy is significantly improved, and the intensity level increasing degree is up to more than 20%, the maximum amplification nearly 100% of compression ductility.Used technology and processing parameter are:
1) current density: j=700 ± 100A/mm
2
2) current pulse width: μ=30～60 μ s
3) current pulse frequency: f=40～70Hz
4) treatment time: 8 ± 3 minutes
5) temperature is controlled between 120 degree～250 degree.
In above-mentioned processing, 1), 2), 4) when condition is identical, 3) in: when adopting f=40Hz, the intensity level increasing degree reaches more than 10%, the maximum amplification nearly 20% of compression ductility; When adopting f=50Hz, the intensity level increasing degree is up to more than 20%, the maximum amplification nearly 100% of compression ductility; When adopting f=70Hz, the intensity level increasing degree reaches more than 15%, the maximum amplification nearly 20% of compression ductility.
(2) utilize high-strength pulse-current to Zr
41.3Ti
14.2Cu
12.8Ni
10.3Be
2.14Block amorphous alloy is handled, and the mechanical property of this block amorphous alloy is significantly improved, and the hardness value increasing degree is about 10-18%.Used technology and processing parameter are:
1) current density: j=2100A/mm
2
2) current pulse width: μ=20～40 μ s
3) current pulse frequency: f=8Hz
4) treatment time: 5 ± 1 minutes.
5) temperature is controlled between 120 degree～250 degree
6) keep the good ventilation condition.
(3) utilize high-strength pulse-current to Zr
41.3Ti
14.2Cu
12.8Ni
10.3Be
21.4Block amorphous alloy is handled, and the mechanical property of this block amorphous alloy is significantly improved, and the hardness value increasing degree is about 10-20%.Used technology and processing parameter are:
1) current density: j=3500A/mm
2
2) current pulse width: μ=20～40 μ s
3) current pulse frequency: f=4Hz
4) treatment time: 5 ± 1 minutes
5) temperature is controlled between 120 degree～270 degree
6) oily medium cooling.
(4) utilize high-strength pulse-current to Zr
41.3Ti
14.2Cu
12.8Ni
10.3Be
21.4Block amorphous alloy is handled, and the mechanical property of this block amorphous alloy is significantly improved, and the hardness value increasing degree is about 15%.Used technology and processing parameter are:
1) current density: j=3300A/mm
2
2) current pulse width: μ=20～40 μ s
3) current pulse frequency: f=40Hz
4) treatment time: 40 minutes.
5) temperature is controlled between 60～150 degree
6) water medium cooling.
Two .ZrTiCuNiAl non-crystaline amorphous metals
Utilize high-strength pulse-current to block Zr
52.5Cu
17.5Ni
14.6Al
10Ti
5Non-crystaline amorphous metal is handled, and the mechanical property of this non-crystaline amorphous metal is significantly improved, and microhardness is increased approximately more than～10%.Used technology and processing parameter are:
1) current density: j=850 ± 100A/mm
2
2) current pulse width: μ=50～80 μ s
3) current pulse frequency: f=30Hz
4) treatment time: 60 minutes
5) temperature is controlled between 120 degree～270 degree.
Three CuZrTi non-crystaline amorphous metals
Utilize high-strength pulse-current to block Cu
60Zr
28Ti
12Non-crystaline amorphous metal is handled, and the mechanical property of this non-crystaline amorphous metal is significantly improved, and the microhardness increasing degree is up to more than 20%.Used technology and processing parameter are:
1) current density: j=400 ± 100A/mm
2
2) current pulse width: μ=60～80 μ s
3) current pulse frequency: f=120Hz
4) treatment time: about 50 minutes
5) temperature is controlled between 80 degree～250 degree.
Four Fe base noncrystal alloys
Utilize high-strength pulse-current to Fe
73.5Cu
1Nb
3Si
13.5B
9Non-crystaline amorphous metal is handled (annotating: strip is carried out many group laminations), and the mechanical property of this non-crystaline amorphous metal is significantly improved, and the microhardness increasing degree is up to more than 15%.Used technology and processing parameter are:
1) current density: j=1700 ± 50A/mm
2
2) current pulse width: μ=20～60 μ s
3) current pulse frequency: f=20Hz
4) treatment time: about 300 minutes
5) temperature is controlled between 60 degree～170 degree
5) water medium cooling.
Claims (6)
1, improves the high-strength pulse-current pretreatment method of mechanical property of non-crystal alloy, it is characterized in that, adopt high-strength pulse-current to handle block amorphous alloy, the output terminal of power supply be connected with pending block amorphous alloy sample, handle according to following parameter:
1) at the feature of block amorphous alloy, selects current density range: j=50～4000A/mm
2
2) current pulse width scope: μ=10～200 μ s;
3) current pulse frequency scope: f=1～500Hz;
4) treatment time scope: 2 seconds～10 hours;
5) in treating processes, the control sample temperature is in following ranges: T＜Tg-50 ℃, wherein Tg is the amorphous transition temperature of sample.
2, the sample temperature high-strength pulse-current pretreatment method that improves mechanical property of non-crystal alloy as claimed in claim 1 is characterized in that, the described the 5th) is controlled at 20 ℃＜T＜Tg-50 ℃.
3, the high-strength pulse-current pretreatment method that improves mechanical property of non-crystal alloy as claimed in claim 1 is characterized in that, when handling the ZrTiCuNiBe non-crystaline amorphous metal, parameter is selected as follows:
1) current density: j=400～3500A/mm
2
2) current pulse width: μ=20～60 μ s
3) current pulse frequency: f=4～100Hz
4) treatment time: 1～40 minute.
4, the high-strength pulse-current pretreatment method that improves mechanical property of non-crystal alloy as claimed in claim 1 is characterized in that, when handle be ZrTiCuNiAl non-crystaline amorphous metal non-crystaline amorphous metal the time, parameter is selected as follows:
1) current density: j=400～1000A/mm
2
2) current pulse width: μ=50～80 μ s
3) current pulse frequency: f=3～30Hz
4) treatment time: 10～60 minutes.
5, the high-strength pulse-current pretreatment method that improves mechanical property of non-crystal alloy as claimed in claim 1 is characterized in that, when handle be the CuZrTi non-crystaline amorphous metal time, parameter is selected as follows:
1) current density: j=300～600A/mm
2
2) current pulse width: μ=60～80 μ s
3) current pulse frequency: f=80～120Hz
4) treatment time: 30～60 minutes.
6, the high-strength pulse-current pretreatment method that improves mechanical property of non-crystal alloy as claimed in claim 1 is characterized in that, when handle be the Fe base noncrystal alloy time or Fe base amorphous thin ribbon when organizing laminate samples more, parameter is selected as follows:
1) current density: j=500～3000A/mm
2
2) current pulse width: μ=20～80 μ s
3) current pulse frequency: f=5～100Hz
4) treatment time: 5～36000 seconds.
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|---|---|---|---|
| CN 200610011417 CN1814851A (en) | 2006-03-03 | 2006-03-03 | High-strength pulse-current pretreatment method for improving mechanical property of non-crystal alloy |
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|---|---|---|---|
| CN 200610011417 CN1814851A (en) | 2006-03-03 | 2006-03-03 | High-strength pulse-current pretreatment method for improving mechanical property of non-crystal alloy |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967552A (en) * | 2010-10-11 | 2011-02-09 | 清华大学 | Post-processing method for improving plasticity of amorphous alloy by using cyclic load |
| CN103962434A (en) * | 2014-05-07 | 2014-08-06 | 华中科技大学 | Electroplastic forming method for block metallic glass and device thereof |
| CN104882239A (en) * | 2015-06-03 | 2015-09-02 | 山东大学 | Method for increasing Fe78Si9B13 amorphous saturation magnetization intensity and lowering coercivity |
| CN111004912A (en) * | 2019-12-04 | 2020-04-14 | 清华大学 | Electric pulse processing method for amorphous alloy structure relaxation |
| CN115198210A (en) * | 2021-04-08 | 2022-10-18 | 中国科学院金属研究所 | Method for driving massive amorphous alloy to quickly recover spring without damage and application thereof |
| CN115679234A (en) * | 2022-11-30 | 2023-02-03 | 昆明理工大学 | Method for improving wear resistance and corrosion resistance of zirconium-based amorphous alloy |
-
2006
- 2006-03-03 CN CN 200610011417 patent/CN1814851A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967552A (en) * | 2010-10-11 | 2011-02-09 | 清华大学 | Post-processing method for improving plasticity of amorphous alloy by using cyclic load |
| CN101967552B (en) * | 2010-10-11 | 2012-06-20 | 清华大学 | Post-processing method for improving plasticity of amorphous alloy by using cyclic load |
| CN103962434A (en) * | 2014-05-07 | 2014-08-06 | 华中科技大学 | Electroplastic forming method for block metallic glass and device thereof |
| CN103962434B (en) * | 2014-05-07 | 2016-06-01 | 华中科技大学 | The Electroplastic forming method of a kind of block metal glass workpiece and device thereof |
| CN104882239A (en) * | 2015-06-03 | 2015-09-02 | 山东大学 | Method for increasing Fe78Si9B13 amorphous saturation magnetization intensity and lowering coercivity |
| CN111004912A (en) * | 2019-12-04 | 2020-04-14 | 清华大学 | Electric pulse processing method for amorphous alloy structure relaxation |
| CN115198210A (en) * | 2021-04-08 | 2022-10-18 | 中国科学院金属研究所 | Method for driving massive amorphous alloy to quickly recover spring without damage and application thereof |
| CN115679234A (en) * | 2022-11-30 | 2023-02-03 | 昆明理工大学 | Method for improving wear resistance and corrosion resistance of zirconium-based amorphous alloy |
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