CN110512129A - A kind of forging torsion integrated technique preparing superelevation severe deformation magnesium alloy rod - Google Patents
A kind of forging torsion integrated technique preparing superelevation severe deformation magnesium alloy rod Download PDFInfo
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- CN110512129A CN110512129A CN201910812838.3A CN201910812838A CN110512129A CN 110512129 A CN110512129 A CN 110512129A CN 201910812838 A CN201910812838 A CN 201910812838A CN 110512129 A CN110512129 A CN 110512129A
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- deformation
- magnesium alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
-
- 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
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
Abstract
The present invention relates to a kind of forgings of magnesium alloy bar with superhigh intensity to turn round integrated technique.The quality of magnesium alloy percent composition are as follows: Mg-8.0 ~ 9.6Gd-1.8 ~ 3.2Y-0.3 ~ 0.7Zr, impurity include Fe, Si, Cu, Ni and other inevitable impurity elements, wherein Fe≤0.02%, Si≤0.02%, Cu≤0.005%, Ni≤0.003%, content of impurities are no more than 0.1%.Process route are as follows: semi-continuous casting, is hot extruded into bar at homogenizing annealing, obtained extruded rod is complete dynamic recrystallized structure, average grain size is 10-15 μm, then deformation of swaging radially is carried out along bar, controlling temperature of swaging is 10 ~ 150 DEG C, controlling pass deformation is 6 ~ 12%, total deformation is 6 ~ 25%, control charging rate is 3 ~ 6mm/min, finally carry out free end torsional deflection, control torsion temperature is 10 ~ 100 DEG C, and control passage torsional shear strain is 5 ~ 30%, and control reverse speed is 5 ~ 100 °/min.Finally obtained tensile strength >=460MPa, yield strength >=370MPa, the magnesium alloy rod of elongation after fracture >=6.5%.
Description
Technical field
The present invention relates to superelevation severe deformation field of magnesium alloy, the in particular to deformation of swaging of Mg-Gd-Y-Zr magnesium-rare earth
With torsional deflection field.
Technical background
Magnesium alloy is due to low density, and high rigidity, specific strength and the features such as be easily recycled are known as " 21 generation
Discipline green engineering material ", as the lightweight structural material of a new generation, excellent loss of weight is in space flight and aviation, rail traffic etc.
The utilization in field has great significance.But one of the technical bottleneck for hindering magnesium alloy to use on a large scale is exactly magnesium alloy power
Learn performance it is poor, it is difficult to performance requirement needed for meeting Service Environment, with when there are some potential safety problemss.Compared to casting
Magnesium alloy, wrought magnesium alloy is due to receive more and more attention with superior mechanical property, research and utilization.Cause
This, exploration prepares the new technology of superhigh strength magnesium alloy to improve magnesium alloy strength, is the important research in wrought magnesium alloy field
Target.Have great importance for the popularization of wrought magnesium alloy.
Summary of the invention
The present invention provides a kind of forgings for preparing super high-strength deforming magnesium alloy to turn round integrated technique.It is super its purpose is to prepare
High-intensitive wrought magnesium alloy, the quality of magnesium alloy percent composition are as follows: Mg-8.0 ~ 9.6Gd-1.8 ~ 3.2Y-0.3 ~
0.7Zr produces magnesium alloy ingot blank using semicontinuous electromagnetic casting method first, after magnesium alloy ingot blank is carried out homogenization heat treatment
Bar is obtained by hot extrusion, deformation of swaging radially then is carried out to extruded bars, finally the bar after swaging is carried out certainly
By end torsional deflection.Using magnesium alloy rod room temperature tensile intensity >=460MPa made from the method, yield strength >=370MPa,
Elongation after fracture >=6.5%.It is being proposed in the present invention the specific process is as follows:
1. preparing magnesium alloy ingot using semi-continuous casting method, ingot casting carries out stress relief annealing after casting immediately；
2. ingot casting is carried out Homogenization Treatments, room temperature is then cooled to the furnace；
3. pair ingot casting carries out railway carriage, flaw detection, sawing machine blanking obtains cylindrical ingot blank.
4. cylindrical ingot blank is carried out hot extrusion deformation, obtained extruded rod is complete dynamic recrystallized structure, average crystalline substance
Particle size is 10-15 μm.
5. radially carrying out deformation of swaging along extruded bars, controlling temperature of swaging is 10 ~ 150 DEG C, and control pass deformation is 5
~ 20%, total deformation is 5 ~ 30%, and control charging rate is 3 ~ 6mm/min.
6. the bar after swaging carries out free end torsional deflection, control torsion temperature is 10 ~ 100 DEG C, and control passage is turned round
Turning shear strain is 5 ~ 30%, and control reverse speed is 5 ~ 100 °/min.
The deformation of swaging, controlling temperature of swaging is 10 ~ 100 DEG C.
The deformation of swaging controls total deformation 6 ~ 20% of swaging.
The deformation of swaging, control charging rate are 4 ~ 6mm/min.
The free end torsional deflection, control torsion temperature is 10 ~ 50 DEG C.
The free end torsional deflection, control bar torsional shear strain is 10 ~ 30%.
The free end torsional deflection, control reverse speed are 5 ~ 30 °/min.
Advantages of the present invention has:
1. magnesium alloy is first carried out to hot extrusion deformation can reduce defects count and size inside casting alloy, it is tiny to obtain crystal grain
Dynamic recrystallized structure, improve alloy deformation plasticity, improve follow-up cold deformation during pass deformation and total deformation,
Improve alloy strength.
2. the extruded rod that hot extrusion is formed is carried out deformation of swaging, swaging to deform can be achieved high Steady-State security, reduce
The tearing tendency of magnesium alloy improves total deformation；Deformation of swaging can also be achieved high strain rate, and magnesium can be improved in high strain rate
The dislocation density that can be accumulated before alloy cracking, high density dislocation, which can induce, forms nanometer scale inside magnesium alloy；Substructure；It swages
When the temperature is excessively high, the defects of dynamic recovery or recrystallization are easy to produce when deformation, not only makes the dislocation of intra-die is buried in oblivion, and is cut
Weak work-hardening effect, dynamic recrystallization can also make grain coarsening, reduce alloy strength.When swaging for 10-100 DEG C, not only make
The hardness of alloy bar material cross section rises overally, and can also obtain high rigidity area in bar center portion.Total deformation of swaging is greater than
30%, bar cracking is not only easily led to, but also the subsequent plastic deformation ability of alloy can be reduced, reduces the change of subsequent torsional deflection
Shape amount.If total deformation of swaging is lower than 6%, weaker to the strengthening effect of material.And when being swaged at room temperature, when total
Dependent variable is 6%-30%, and the attainable maximum shear strain of the institute of Surface of Rod Bar is respectively 46%-18%.
3. deformation of swaging can make bar centre hardness much higher than edge.And the sample after swaging carries out torsional deflection,
Bar edge can be refined, bar edge is induced and generates shear band, improve bar edge hardness and intensity.Add torsion using swaging
The integrated technique microstructure and mechanical property of bar radially that can to swage it is more uniform, reach better strengthening effect.
It when torsional deflection is lower than 15%, is not enough to excite the generation of shear band, when strain is higher than 30%, is easy inducing materials shearing instability,
It cracks, shear strain amount is controlled at 15 ~ 30%, and bar strengthening effect is best.
4. produce magnesium alloy ingot blank using semi-continuous casting method, can reduce be mingled with, stomata, loose, centre burst etc. lack
It falls into.Control defects count can reduce its tearing tendency during deformation after unloading, improve magnesium alloy it is subsequent swage deformation and
Formability during torsional deflection improves achievable total deformation.
Specific embodiment
Embodiment 1
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, pass deformation 6%, total deformation 6%, controlling charging rate is
4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 17%, and Surface of Rod Bar is total
Torsional shear strain is 17%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 2
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
E. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
B. extruded bars are subjected to deformation of swaging at 20 DEG C, pass deformation 6%, total deformation 6%, controlling charging rate is
4mm/min；
C. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 25%, and Surface of Rod Bar is total
Torsional shear strain is 25%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 3
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
F. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
B. extruded bars are subjected to deformation of swaging at 20 DEG C, pass deformation 6%, total deformation 6%, controlling charging rate is
4mm/min；
C. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 18%, 6%, 4%, bar
The strain of total surface torsional shear is 28%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 4
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging, pass deformation 12%, total deformation 12%, control charging speed at 20 DEG C
Degree is 4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 15%, and Surface of Rod Bar is total
Torsional shear strain is 15%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained nanometer isomery magnesium alloy according to GB/T228-2002, the results are shown in Table 1.
Embodiment 5
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging, pass deformation 12%, total deformation 12%, control charging speed at 20 DEG C
Degree is 4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 23%, and Surface of Rod Bar is total
Torsional shear strain is 23%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 6
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, 6%, total deformation 12%, control into
Material speed is 4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 15%, and Surface of Rod Bar is total
Torsional shear strain is 15%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 7
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, 6%, total deformation 12%, control into
Material speed is 4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 10%, 10%, 5%, stick
The strain of material total surface torsional shear is 25%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 8
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, 6%, 5%, total deformation 17%, control
Charging rate processed is 4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 15%, and Surface of Rod Bar is total
Torsional shear strain is 15%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 9
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, 6%, 5%, total deformation 17%, control
Charging rate processed is 4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 23%, and Surface of Rod Bar is total
Torsional shear strain is 23%, torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 1.
Embodiment 10
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, 6%, 5%, total deformation 17%, control
Charging rate processed is 4mm/min；
D. the bar that will swage carries out torsional deflection at 20 DEG C, and control Surface of Rod Bar passage torsional strain is 10%, 10%, 5%, stick
The strain of material total surface torsional shear is 25%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained nanometer isomery magnesium alloy according to GB/T228-2002, the results are shown in Table 1.
Comparative example 1
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, total deformation 6%, control charging speed
Degree is 4mm/min.
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 2.
Comparative example 2
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 12%, total deformation 12%, control charging
Speed is 4mm/min
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 2.
Comparative example 3
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, 6%, total deformation 12%, control into
Material speed is 4mm/min；
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 2.
Comparative example 4
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to deformation of swaging at 20 DEG C, control pass deformation is 6%, 6%, 5%, total deformation 17%, control
Charging rate processed is 4mm/min；
Mechanics Performance Testing is carried out to gained magnesium alloy rod according to GB/T228-2002, the results are shown in Table 2.
Comparative example 5
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to torsional deflection at 20 DEG C, control Surface of Rod Bar passage torsional strain is 15%, and Surface of Rod Bar is total
Torsional shear strain is 15%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained nanometer isomery magnesium alloy according to GB/T228-2002, the results are shown in Table 2.
Comparative example 6
A. the quality of magnesium alloy percent composition are as follows: Mg-8.0Gd-3.0Y-0.4Zr prepares magnesium using semi-continuous casting method
Alloy ingot blank, and carry out homogenization heat treatment；
B. the alloy blank after Homogenization Treatments is subjected to hot extrusion deformation, obtained extruded rod is complete dynamic recrystallization group
It knits, average grain size is 12 μm；
C. extruded bars are subjected to torsional deflection at 20 DEG C, control Surface of Rod Bar passage torsional strain is 23%, and Surface of Rod Bar is total
Torsional shear strain is 23%, and torsion temperature is 20 DEG C, and reverse speed is 10 °/min.
Mechanics Performance Testing is carried out to gained nanometer isomery magnesium alloy according to GB/T228-2002, the results are shown in Table 2.
Table 1
Table 2
Claims (7)
1. integrated technique is turned round in a kind of forging for preparing superelevation severe deformation magnesium alloy rod, it is characterised in that: the quality of magnesium alloy hundred
Divide and compare ingredient are as follows: the mass ratio of Gd:8.0-9.6%, Y:1.8-3.2%, Zr:0.3-0.7%, Gd and Y are as follows: 3≤Gd/Y≤5, remaining
For Mg and Fe, Si, Cu, Ni and other inevitable impurity elements, the mass content of impurity element, Fe≤0.02%, Si
≤ 0.02%, Cu≤0.005%, Ni≤0.003%, content of impurities are no more than 0.1%, specifically includes the following steps:
Magnesium alloy ingot blank is prepared using semicontinuous electromagnetic casting method；
Magnesium alloy ingot blank is subjected to homogenization heat treatment, the blank after heat treatment is subjected to hot extrusion deformation, obtained extruded rod
For complete dynamic recrystallized structure, average grain size is 10-15 μm；
Deformation of swaging radially is carried out along extruded bars, controlling temperature of swaging is 10 ~ 150 DEG C, and control pass deformation is 6 ~ 12%,
Total deformation is 6 ~ 25%, and control charging rate is 3 ~ 6mm/min；
Bar after swaging carries out free end torsional deflection, and control torsion temperature is 10 ~ 100 DEG C, controls passage torsional shear
Strain is 5 ~ 30%, and control reverse speed is 5 ~ 60 °/min.
2. integrated technique is turned round in a kind of forging for preparing superelevation severe deformation magnesium alloy rod according to claim 1, it is characterised in that:
The deformation of swaging, controlling temperature of swaging is 10 ~ 100 DEG C.
3. integrated technique is turned round in a kind of forging for preparing superelevation severe deformation magnesium alloy rod according to claim 1, it is characterised in that:
The deformation of swaging controls total deformation 6 ~ 20% of swaging.
4. integrated technique is turned round in a kind of forging for preparing superelevation severe deformation magnesium alloy rod according to claim 1, it is characterised in that:
The deformation of swaging, control charging rate are 4 ~ 6mm/min.
5. integrated technique is turned round in a kind of forging for preparing superelevation severe deformation magnesium alloy rod according to claim 1, it is characterised in that:
The free end torsional deflection, control torsion temperature is 10 ~ 50 DEG C.
6. integrated technique is turned round in a kind of forging for preparing superelevation severe deformation magnesium alloy rod according to claim 1, it is characterised in that:
The free end torsional deflection, the torsional shear strain for controlling Surface of Rod Bar is 10 ~ 30%.
7. integrated technique is turned round in a kind of forging for preparing superelevation severe deformation magnesium alloy rod according to claim 1, it is characterised in that:
The free end torsional deflection, control reverse speed are 5 ~ 30 °/min.
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| RU2812104C1 (en) * | 2023-04-07 | 2024-01-22 | Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) | Method for processing magnesium alloys with yttrium and gadolinium |
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