CN103725943B - A kind of magnesium alloy sheet and preparation method thereof - Google Patents
A kind of magnesium alloy sheet and preparation method thereof Download PDFInfo
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- CN103725943B CN103725943B CN201410018733.8A CN201410018733A CN103725943B CN 103725943 B CN103725943 B CN 103725943B CN 201410018733 A CN201410018733 A CN 201410018733A CN 103725943 B CN103725943 B CN 103725943B
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Abstract
The present invention relates to a kind of magnesium alloy sheet and preparation method thereof, each constituent mass percentage composition of described alloy comprises: Zn5-6%, Cu4-5%, Al3-4%, Ca1-2%, Bi0.7-0.8%, Ag0.5-0.6%, Ni0.4-0.5%, Nd0.1-0.2%, Pr? 0.03-0.04%, Cr0.03-0.04%, Y0.03-0.04%, Mn? 0.03-0.04%, La0.02-0.03%, Co0.03-0.04%, surplus is magnesium and inevitable nonmetal inclusion, the present invention is by the alloy element of adjustment magnesium alloy, make the surface quality of alloy excellent, be suitable for preparing magnesium alloy sheet.
Description
Technical field
The present invention relates to a kind of magnesium alloy sheet and preparation method thereof, belong to Magnuminium and manufacture field.
Background technology
In the electronics industry, adopt handset shell that magnesium alloy plate stamping technology is produced compared with corresponding die casting product, have the advantages such as the thin and productivity of wall is high.Therefore magnesium alloy stamping part has a good application prospect, and exploitation magnesium alloy plate punching press and correlation technique thereof have important theory significance and social benefit.But, because magnesium alloy crystalline structure is close-packed hexagonal, plasticity is poor, forming difficulty, lumber recovery is low, the wrong understanding of the shortcoming such as people are inflammable to magnesium alloy, not corrosion-resistant in addition, cause the punching press of wrought magnesium alloys sheet material not obtain large-scale application, the research of wrought magnesium alloys and forming technology is also very insufficient.The sheet material of wrought magnesium alloys, section bar and forging mainly in the application of the field such as Aeronautics and Astronautics and military affairs, do not spread to civil area.Economizing on resources and decreasing pollution social desirability under, wrought magnesium alloys is beneficial to the strategic requirement of Sustainable development, is badly in need of transition of people's conceptions, accelerates research, promote its application in civil area.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of high-strength magnesium alloy thin plate and preparation method thereof.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of preparation method of magnesium alloy sheet is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn5-6%, Cu4-5%, Al3-4%, Ca1-2%, Bi0.7-0.8%, Ag0.5-0.6%, Ni0.4-0.5%, Nd0.1-0.2%, Pr0.03-0.04%, Cr0.03-0.04%, Y0.03-0.04%, Mn0.03-0.04%, La0.02-0.03%, Co0.03-0.04%, surplus is magnesium and inevitable nonmetal inclusion
Described preparation method comprises the following step:
(1) melting: preheated crucible removal of contamination, preheating temperature is 450 DEG C; Being placed in by described magnesium ingot in crucible slowly heats makes magnesium ingot slowly melt, and smelting time is 3 hours, and temperature is 720 DEG C; After described magnesium ingot melts completely, be filled with rare gas element, and add described zinc magnesium alloy, copper-magnesium alloy and aluminum magnesium alloy after being warming up to 790 DEG C, open vibrating device 30 minutes, form aluminium alloy, then add all the other elementary composition continuation vibration 30 minutes; Form the aluminium alloy fully merged, the refining agent adding the 4wt% accounting for liquid magnesium alloy total amount afterwards carries out refining treatment, and refining time is 20min, and after refining completes, remove slag, aluminium alloy leaves standstill and is cooled to teeming temperature 710 DEG C and carries out pouring into ingot casting; Described refining agent is made up of 14 % by weight Repone K, 18 % by weight bariumchlorides, 20 % by weight sodium carbonate, 23 % by weight Calcium Fluoride (Fluorspan), 7 % by weight boric acid, 18 % by weight sodium fluoroaluminate.
(2) magnesium alloy ingot is heated to 600 DEG C, insulation homogenizing annealing 6h, after be cooled to 570 DEG C with 10 DEG C/h of rate of temperature fall, insulation 5h;
(3) ingot casting is put into hot rolls again, pressure be 700T, temperature is rolled under being 520 DEG C of conditions, controlled rolling speed is 0.4m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into process furnace and be heated to 400 DEG C, insulation 7h carries out process annealing process, put into hot rolls again, pressure be 700T, temperature is rolled under being 470 DEG C of conditions, controlled rolling speed is 0.5m/min, rolling obtains sheet material and puts into process furnace and be heated to 380 DEG C, and insulation 8h carries out process annealing process
(4) it is cold rolling that sheet material hot rolling obtained carries out 5 passages, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.8mm,
(5) sheet material is placed in 370 DEG C of 5 hours heat-up times of annealing furnace temperature; Then be cooled to 300 DEG C of insulations 4 hours,
(6) surface treatment step is carried out: first adopt sandblasting to carry out removing foreign material and roughening treatment to magnesium alloy plate surface, then on magnesium alloy plate, thermal spraying aluminum alloy is carried out, afterwards at 370 DEG C, be incubated 5 hours, 300 DEG C of insulations 3 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, 180 DEG C of insulations 4 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, obtain magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8-9%, Cu5-6%, Cr1-2%, Mg0.5-0.6%, Sn0.5-0.6%, and surplus is aluminium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, each constituent mass percentage composition of described alloy comprises: Zn5-6%, Cu4%, Al3%, Ca1%, Bi0.7%, Ag0.5%, Ni0.4%, Nd0.1%, Pr0.03%, Cr0.03%, Y0.03%, Mn0.03%, La0.02%, Co0.03%, surplus is magnesium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, each constituent mass percentage composition of described alloy comprises: Zn6%, Cu5%, Al4%, Ca2%, Bi0.8%, Ag0.6%, Ni0.5%, Nd0.2%, Pr0.04%, Cr0.04%, Y0.04%, Mn0.04%, La0.03%, Co0.04%, surplus is magnesium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, each constituent mass percentage composition of described alloy comprises: Zn5.5%, Cu4.5%, Al3.5%, Ca1.5%, Bi0.75%, Ag0.55%, Ni0.45%, Nd0.15%, Pr0.035%, Cr0.035%, Y0.035%, Mn0.035%, La0.025%, Co0.035%, surplus is magnesium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, each constituent mass percentage composition of described alloy comprises: Zn5.3%, Cu4.6%, Al3.7%, Ca1.8%, Bi0.79%, Ag0.57%, Ni0.48%, Nd0.14%, Pr0.033%, Cr0.032%, Y0.039%, Mn0.038%, La0.027%, Co0.036%, surplus is magnesium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8%, Cu5%, Cr1%, Mg0.5%, Sn0.5%, and surplus is aluminium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn9%, Cu6%, Cr2%, Mg0.6%, Sn0.6%, and surplus is aluminium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8.5%, Cu5.5%, Cr1.5%, Mg0.55%, Sn0.55%, and surplus is aluminium and inevitable nonmetal inclusion.
As preferably, the preparation method of described magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8.3%, Cu5.6%, Cr1.8%, Mg0.53%, Sn0.51%, and surplus is aluminium and inevitable nonmetal inclusion.
Compared with prior art, the present invention has following beneficial effect:
The beneficial effect of preparation method of the present invention is:
(1) the present invention is by the alloy element of adjustment magnesium alloy, makes the surface quality of alloy excellent, is suitable for preparing magnesium alloy sheet;
(2) finished product machinery excellent performance, tensile strength reaches more than 350MPa, and unit elongation reaches 13%, and earing rate reduces in 1%, improves the coating performance of thin plate.
Embodiment
Embodiment 1:
A kind of preparation method of magnesium alloy sheet, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn5%, Cu4%, Al3%, Ca1%, Bi0.7%, Ag0.5%, Ni0.4%, Nd0.1%, Pr0.03%, Cr0.03%, Y0.03%, Mn0.03%, La0.02%, Co0.03%, surplus is magnesium and inevitable nonmetal inclusion
Described preparation method comprises the following step:
(1) melting: preheated crucible removal of contamination, preheating temperature is 450 DEG C; Being placed in by described magnesium ingot in crucible slowly heats makes magnesium ingot slowly melt, and smelting time is 3 hours, and temperature is 720 DEG C; After described magnesium ingot melts completely, be filled with rare gas element, and add described zinc magnesium alloy, copper-magnesium alloy and aluminum magnesium alloy after being warming up to 790 DEG C, open vibrating device 30 minutes, form aluminium alloy, then add all the other elements continuation vibration 30 minutes; Form the aluminium alloy fully merged, the refining agent adding the 4wt% accounting for liquid magnesium alloy total amount afterwards carries out refining treatment, and refining time is 20min, and after refining completes, remove slag, aluminium alloy leaves standstill and is cooled to teeming temperature 710 DEG C and carries out pouring into ingot casting; Described refining agent is made up of 14 % by weight Repone K, 18 % by weight bariumchlorides, 20 % by weight sodium carbonate, 23 % by weight Calcium Fluoride (Fluorspan), 7 % by weight boric acid, 18 % by weight sodium fluoroaluminate.
(2) magnesium alloy ingot is heated to 600 DEG C, insulation homogenizing annealing 6h, after be cooled to 570 DEG C with 10 DEG C/h of rate of temperature fall, insulation 5h;
(3) ingot casting is put into hot rolls again, pressure be 700T, temperature is rolled under being 520 DEG C of conditions, controlled rolling speed is 0.4m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into process furnace and be heated to 400 DEG C, insulation 7h carries out process annealing process, put into hot rolls again, pressure be 700T, temperature is rolled under being 470 DEG C of conditions, controlled rolling speed is 0.5m/min, rolling obtains sheet material and puts into process furnace and be heated to 380 DEG C, and insulation 8h carries out process annealing process
(4) it is cold rolling that sheet material hot rolling obtained carries out 5 passages, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.8mm,
(5) sheet material is placed in 370 DEG C of 5 hours heat-up times of annealing furnace temperature; Then be cooled to 300 DEG C of insulations 4 hours,
(6) surface treatment step is carried out: first adopt sandblasting to carry out removing foreign material and roughening treatment to magnesium alloy plate surface, then on magnesium alloy plate, thermal spraying aluminum alloy is carried out, afterwards at 370 DEG C, be incubated 5 hours, 300 DEG C of insulations 3 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, 180 DEG C of insulations 4 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, obtain magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8%, Cu5%, Cr1%, Mg0.5%, Sn0.5%, and surplus is aluminium and inevitable nonmetal inclusion.
Embodiment 2:
A kind of preparation method of magnesium alloy sheet, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn6%, Cu5%, Al4%, Ca2%, Bi0.8%, Ag0.6%, Ni0.5%, Nd0.2%, Pr0.04%, Cr0.04%, Y0.04%, Mn0.04%, La0.03%, Co0.04%, surplus is magnesium and inevitable nonmetal inclusion
Described preparation method comprises the following step:
(1) melting: preheated crucible removal of contamination, preheating temperature is 450 DEG C; Being placed in by described magnesium ingot in crucible slowly heats makes magnesium ingot slowly melt, and smelting time is 3 hours, and temperature is 720 DEG C; After described magnesium ingot melts completely, be filled with rare gas element, and add described zinc magnesium alloy, copper-magnesium alloy and aluminum magnesium alloy after being warming up to 790 DEG C, open vibrating device 30 minutes, form aluminium alloy, then add all the other elements continuation vibration 30 minutes; Form the aluminium alloy fully merged, the refining agent adding the 4wt% accounting for liquid magnesium alloy total amount afterwards carries out refining treatment, and refining time is 20min, and after refining completes, remove slag, aluminium alloy leaves standstill and is cooled to teeming temperature 710 DEG C and carries out pouring into ingot casting; Described refining agent is made up of 14 % by weight Repone K, 18 % by weight bariumchlorides, 20 % by weight sodium carbonate, 23 % by weight Calcium Fluoride (Fluorspan), 7 % by weight boric acid, 18 % by weight sodium fluoroaluminate.
(2) magnesium alloy ingot is heated to 600 DEG C, insulation homogenizing annealing 6h, after be cooled to 570 DEG C with 10 DEG C/h of rate of temperature fall, insulation 5h;
(3) ingot casting is put into hot rolls again, pressure be 700T, temperature is rolled under being 520 DEG C of conditions, controlled rolling speed is 0.4m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into process furnace and be heated to 400 DEG C, insulation 7h carries out process annealing process, put into hot rolls again, pressure be 700T, temperature is rolled under being 470 DEG C of conditions, controlled rolling speed is 0.5m/min, rolling obtains sheet material and puts into process furnace and be heated to 380 DEG C, and insulation 8h carries out process annealing process
(4) it is cold rolling that sheet material hot rolling obtained carries out 5 passages, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.8mm,
(5) sheet material is placed in 370 DEG C of 5 hours heat-up times of annealing furnace temperature; Then be cooled to 300 DEG C of insulations 4 hours,
(6) surface treatment step is carried out: first adopt sandblasting to carry out removing foreign material and roughening treatment to magnesium alloy plate surface, then on magnesium alloy plate, thermal spraying aluminum alloy is carried out, afterwards at 370 DEG C, be incubated 5 hours, 300 DEG C of insulations 3 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, 180 DEG C of insulations 4 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, obtain magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn9%, Cu6%, Cr2%, Mg0.6%, Sn0.6%, and surplus is aluminium and inevitable nonmetal inclusion.
Embodiment 3:
A kind of preparation method of magnesium alloy sheet, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn5.5%, Cu4.5%, Al3.5%, Ca1.5%, Bi0.75%, Ag0.55%, Ni0.45%, Nd0.15%, Pr0.035%, Cr0.035%, Y0.035%, Mn0.035%, La0.025%, Co0.035%, surplus is magnesium and inevitable nonmetal inclusion
Described preparation method comprises the following step:
(1) melting: preheated crucible removal of contamination, preheating temperature is 450 DEG C; Being placed in by described magnesium ingot in crucible slowly heats makes magnesium ingot slowly melt, and smelting time is 3 hours, and temperature is 720 DEG C; After described magnesium ingot melts completely, be filled with rare gas element, and add described zinc magnesium alloy, copper-magnesium alloy and aluminum magnesium alloy after being warming up to 790 DEG C, open vibrating device 30 minutes, form aluminium alloy, then add all the other elements continuation vibration 30 minutes; Form the aluminium alloy fully merged, the refining agent adding the 4wt% accounting for liquid magnesium alloy total amount afterwards carries out refining treatment, and refining time is 20min, and after refining completes, remove slag, aluminium alloy leaves standstill and is cooled to teeming temperature 710 DEG C and carries out pouring into ingot casting; Described refining agent is made up of 14 % by weight Repone K, 18 % by weight bariumchlorides, 20 % by weight sodium carbonate, 23 % by weight Calcium Fluoride (Fluorspan), 7 % by weight boric acid, 18 % by weight sodium fluoroaluminate.
(2) magnesium alloy ingot is heated to 600 DEG C, insulation homogenizing annealing 6h, after be cooled to 570 DEG C with 10 DEG C/h of rate of temperature fall, insulation 5h;
(3) ingot casting is put into hot rolls again, pressure be 700T, temperature is rolled under being 520 DEG C of conditions, controlled rolling speed is 0.4m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into process furnace and be heated to 400 DEG C, insulation 7h carries out process annealing process, put into hot rolls again, pressure be 700T, temperature is rolled under being 470 DEG C of conditions, controlled rolling speed is 0.5m/min, rolling obtains sheet material and puts into process furnace and be heated to 380 DEG C, and insulation 8h carries out process annealing process
(4) it is cold rolling that sheet material hot rolling obtained carries out 5 passages, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.8mm,
(5) sheet material is placed in 370 DEG C of 5 hours heat-up times of annealing furnace temperature; Then be cooled to 300 DEG C of insulations 4 hours,
(6) surface treatment step is carried out: first adopt sandblasting to carry out removing foreign material and roughening treatment to magnesium alloy plate surface, then on magnesium alloy plate, thermal spraying aluminum alloy is carried out, afterwards at 370 DEG C, be incubated 5 hours, 300 DEG C of insulations 3 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, 180 DEG C of insulations 4 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, obtain magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8.5%, Cu5.5%, Cr1.5%, Mg0.55%, Sn0.55%, and surplus is aluminium and inevitable nonmetal inclusion.
Embodiment 4:
A kind of preparation method of magnesium alloy sheet, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn5.2%, Cu4.3%, Al3.4%, Ca1.6%, Bi0.77%, Ag0.58%, Ni0.49%, Nd0.11%, Pr0.033%, Cr0.034%, Y0.037%, Mn0.036%, La0.028%, Co0.039%, surplus is magnesium and inevitable nonmetal inclusion
Described preparation method comprises the following step:
(1) melting: preheated crucible removal of contamination, preheating temperature is 450 DEG C; Being placed in by described magnesium ingot in crucible slowly heats makes magnesium ingot slowly melt, and smelting time is 3 hours, and temperature is 720 DEG C; After described magnesium ingot melts completely, be filled with rare gas element, and add described zinc magnesium alloy, copper-magnesium alloy and aluminum magnesium alloy after being warming up to 790 DEG C, open vibrating device 30 minutes, form aluminium alloy, then add all the other elements continuation vibration 30 minutes; Form the aluminium alloy fully merged, the refining agent adding the 4wt% accounting for liquid magnesium alloy total amount afterwards carries out refining treatment, and refining time is 20min, and after refining completes, remove slag, aluminium alloy leaves standstill and is cooled to teeming temperature 710 DEG C and carries out pouring into ingot casting; Described refining agent is made up of 14 % by weight Repone K, 18 % by weight bariumchlorides, 20 % by weight sodium carbonate, 23 % by weight Calcium Fluoride (Fluorspan), 7 % by weight boric acid, 18 % by weight sodium fluoroaluminate.
(2) magnesium alloy ingot is heated to 600 DEG C, insulation homogenizing annealing 6h, after be cooled to 570 DEG C with 10 DEG C/h of rate of temperature fall, insulation 5h;
(3) ingot casting is put into hot rolls again, pressure be 700T, temperature is rolled under being 520 DEG C of conditions, controlled rolling speed is 0.4m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into process furnace and be heated to 400 DEG C, insulation 7h carries out process annealing process, put into hot rolls again, pressure be 700T, temperature is rolled under being 470 DEG C of conditions, controlled rolling speed is 0.5m/min, rolling obtains sheet material and puts into process furnace and be heated to 380 DEG C, and insulation 8h carries out process annealing process
(4) it is cold rolling that sheet material hot rolling obtained carries out 5 passages, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.8mm,
(5) sheet material is placed in 370 DEG C of 5 hours heat-up times of annealing furnace temperature; Then be cooled to 300 DEG C of insulations 4 hours,
(6) surface treatment step is carried out: first adopt sandblasting to carry out removing foreign material and roughening treatment to magnesium alloy plate surface, then on magnesium alloy plate, thermal spraying aluminum alloy is carried out, afterwards at 370 DEG C, be incubated 5 hours, 300 DEG C of insulations 3 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, 180 DEG C of insulations 4 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, obtain magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8.2%, Cu5.4%, Cr1.6%, Mg0.58%, Sn0.59%, and surplus is aluminium and inevitable nonmetal inclusion.
Embodiment 5:
A kind of preparation method of magnesium alloy sheet, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn5.3%, Cu4.6%, Al3.8%, Ca1.9%, Bi0.71%, Ag0.52%, Ni0.43%, Nd0.14%, Pr0.035%, Cr0.036%, Y0.038%, Mn0.039%, La0.024%, Co0.037%, surplus is magnesium and inevitable nonmetal inclusion
Described preparation method comprises the following step:
(1) melting: preheated crucible removal of contamination, preheating temperature is 450 DEG C; Being placed in by described magnesium ingot in crucible slowly heats makes magnesium ingot slowly melt, and smelting time is 3 hours, and temperature is 720 DEG C; After described magnesium ingot melts completely, be filled with rare gas element, and add described zinc magnesium alloy, copper-magnesium alloy and aluminum magnesium alloy after being warming up to 790 DEG C, open vibrating device 30 minutes, form aluminium alloy, then add all the other elements continuation vibration 30 minutes; Form the aluminium alloy fully merged, the refining agent adding the 4wt% accounting for liquid magnesium alloy total amount afterwards carries out refining treatment, and refining time is 20min, and after refining completes, remove slag, aluminium alloy leaves standstill and is cooled to teeming temperature 710 DEG C and carries out pouring into ingot casting; Described refining agent is made up of 14 % by weight Repone K, 18 % by weight bariumchlorides, 20 % by weight sodium carbonate, 23 % by weight Calcium Fluoride (Fluorspan), 7 % by weight boric acid, 18 % by weight sodium fluoroaluminate.
(2) magnesium alloy ingot is heated to 600 DEG C, insulation homogenizing annealing 6h, after be cooled to 570 DEG C with 10 DEG C/h of rate of temperature fall, insulation 5h;
(3) ingot casting is put into hot rolls again, pressure be 700T, temperature is rolled under being 520 DEG C of conditions, controlled rolling speed is 0.4m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into process furnace and be heated to 400 DEG C, insulation 7h carries out process annealing process, put into hot rolls again, pressure be 700T, temperature is rolled under being 470 DEG C of conditions, controlled rolling speed is 0.5m/min, rolling obtains sheet material and puts into process furnace and be heated to 380 DEG C, and insulation 8h carries out process annealing process
(4) it is cold rolling that sheet material hot rolling obtained carries out 5 passages, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.8mm,
(5) sheet material is placed in 370 DEG C of 5 hours heat-up times of annealing furnace temperature; Then be cooled to 300 DEG C of insulations 4 hours,
(6) surface treatment step is carried out: first adopt sandblasting to carry out removing foreign material and roughening treatment to magnesium alloy plate surface, then on magnesium alloy plate, thermal spraying aluminum alloy is carried out, afterwards at 370 DEG C, be incubated 5 hours, 300 DEG C of insulations 3 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, 180 DEG C of insulations 4 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, obtain magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8.8%, Cu5.6%, Cr1.2%, Mg0.53%, Sn0.51%, and surplus is aluminium and inevitable nonmetal inclusion.
Claims (10)
1. a magnesium alloy sheet, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn5-6%, Cu4-5%, Al3-4%, Ca1-2%, Bi0.7-0.8%, Ag0.5-0.6%, Ni0.4-0.5%, Nd0.1-0.2%, Pr0.03-0.04%, Cr0.03-0.04%, Y0.03-0.04%, Mn0.03-0.04%, La0.02-0.03%, Co0.03-0.04%, surplus is magnesium and inevitable nonmetal inclusion.
2. magnesium alloy sheet as claimed in claim 1, each constituent mass percentage composition of described alloy comprises: Zn5-6%, Cu4%, Al3%, Ca1%, Bi0.7%, Ag0.5%, Ni0.4%, Nd0.1%, Pr0.03%, Cr0.03%, Y0.03%, Mn0.03%, La0.02%, Co0.03%, surplus is magnesium and inevitable nonmetal inclusion.
3. magnesium alloy sheet as claimed in claim 1, each constituent mass percentage composition of described alloy comprises: Zn6%, Cu5%, Al4%, Ca2%, Bi0.8%, Ag0.6%, Ni0.5%, Nd0.2%, Pr0.04%, Cr0.04%, Y0.04%, Mn0.04%, La0.03%, Co0.04%, surplus is magnesium and inevitable nonmetal inclusion.
4. magnesium alloy sheet as claimed in claim 1, each constituent mass percentage composition of described alloy comprises: Zn5.5%, Cu4.5%, Al3.5%, Ca1.5%, Bi0.75%, Ag0.55%, Ni0.45%, Nd0.15%, Pr0.035%, Cr0.035%, Y0.035%, Mn0.035%, La0.025%, Co0.035%, surplus is magnesium and inevitable nonmetal inclusion.
5. magnesium alloy sheet as claimed in claim 1, each constituent mass percentage composition of described alloy comprises: Zn5.3%, Cu4.6%, Al3.7%, Ca1.8%, Bi0.79%, Ag0.57%, Ni0.48%, Nd0.14%, Pr0.033%, Cr0.032%, Y0.039%, Mn0.038%, La0.027%, Co0.036%, surplus is magnesium and inevitable nonmetal inclusion.
6. the preparation method of a magnesium alloy sheet, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Zn5-6%, Cu4-5%, Al3-4%, Ca1-2%, Bi0.7-0.8%, Ag0.5-0.6%, Ni0.4-0.5%, Nd0.1-0.2%, Pr0.03-0.04%, Cr0.03-0.04%, Y0.03-0.04%, Mn0.03-0.04%, La0.02-0.03%, Co0.03-0.04%, surplus is magnesium and inevitable nonmetal inclusion
Described preparation method comprises the following step:
(1) melting: preheated crucible removal of contamination, preheating temperature is 450 DEG C; Being placed in by magnesium ingot in crucible slowly heats makes magnesium ingot slowly melt, and smelting time is 3 hours, and temperature is 720 DEG C; After magnesium ingot melts completely, be filled with rare gas element, and add zinc magnesium alloy, copper-magnesium alloy and aluminum magnesium alloy after being warming up to 790 DEG C, open vibrating device 30 minutes, form aluminium alloy, then add all the other elementary composition continuation vibration 30 minutes; Form the aluminium alloy fully merged, the refining agent adding the 4wt% accounting for liquid magnesium alloy total amount afterwards carries out refining treatment, and refining time is 20min, and after refining completes, remove slag, aluminium alloy leaves standstill and is cooled to teeming temperature 710 DEG C and carries out pouring into ingot casting; Refining agent is made up of 14 % by weight Repone K, 18 % by weight bariumchlorides, 20 % by weight sodium carbonate, 23 % by weight Calcium Fluoride (Fluorspan), 7 % by weight boric acid, 18 % by weight sodium fluoroaluminate,
(2) magnesium alloy ingot is heated to 600 DEG C, insulation homogenizing annealing 6h, after be cooled to 570 DEG C with 10 DEG C/h of rate of temperature fall, insulation 5h;
(3) ingot casting is put into hot rolls again, pressure be 700T, temperature is rolled under being 520 DEG C of conditions, controlled rolling speed is 0.4m/min, and rolling obtains woollen sheet material; Again woollen sheet material is put into process furnace and be heated to 400 DEG C, insulation 7h carries out process annealing process, put into hot rolls again, pressure be 700T, temperature is rolled under being 470 DEG C of conditions, controlled rolling speed is 0.5m/min, rolling obtains sheet material and puts into process furnace and be heated to 380 DEG C, and insulation 8h carries out process annealing process
(4) it is cold rolling that sheet material hot rolling obtained carries out 5 passages, and the cold roling reduction of final passage is 15%, and final rolling thickness is 0.8mm,
(5) sheet material is placed in 370 DEG C of 5 hours heat-up times of annealing furnace temperature; Then be cooled to 300 DEG C of insulations 4 hours,
(6) surface treatment step is carried out: first adopt sandblasting to carry out removing foreign material and roughening treatment to magnesium alloy plate surface, then on magnesium alloy plate, thermal spraying aluminum alloy is carried out, afterwards at 370 DEG C, be incubated 5 hours, 300 DEG C of insulations 3 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, 180 DEG C of insulations 4 hours are down to afterwards with the rate of temperature fall of 20 DEG C/h, obtain magnesium alloy sheet, thermal spraying aluminum alloying constituent is: Zn8-9%, Cu5-6%, Cr1-2%, Mg0.5-0.6%, Sn0.5-0.6%, and surplus is aluminium and inevitable nonmetal inclusion.
7. the preparation method of magnesium alloy sheet as claimed in claim 6, thermal spraying aluminum alloying constituent is: Zn8%, Cu5%, Cr1%, Mg0.5%, Sn0.5%, and surplus is aluminium and inevitable nonmetal inclusion.
8. the preparation method of magnesium alloy sheet as claimed in claim 6, thermal spraying aluminum alloying constituent is: Zn9%, Cu6%, Cr2%, Mg0.6%, Sn0.6%, and surplus is aluminium and inevitable nonmetal inclusion.
9. the preparation method of magnesium alloy sheet as claimed in claim 6, thermal spraying aluminum alloying constituent is: Zn8.5%, Cu5.5%, Cr1.5%, Mg0.55%, Sn0.55%, and surplus is aluminium and inevitable nonmetal inclusion.
10. the preparation method of magnesium alloy sheet as claimed in claim 6, thermal spraying aluminum alloying constituent is: Zn8.3%, Cu5.6%, Cr1.8%, Mg0.53%, Sn0.51%, and surplus is aluminium and inevitable nonmetal inclusion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410018733.8A CN103725943B (en) | 2014-01-16 | 2014-01-16 | A kind of magnesium alloy sheet and preparation method thereof |
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| CN109338187B (en) * | 2018-11-19 | 2021-01-29 | 河北工业大学 | Low-cost high-strength and high-toughness wrought magnesium alloy capable of being extruded at high speed and preparation method thereof |
| CN112981152A (en) * | 2021-02-18 | 2021-06-18 | 维欧(天津)能源技术服务股份有限公司 | Preparation method of high-strength magnesium alloy sheet |
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| CN101076613A (en) * | 2004-12-13 | 2007-11-21 | 爱尔康何纳吕公司 | Low internal stress a-zn-cu-mg alloy high strength board |
| CN102978544A (en) * | 2012-11-21 | 2013-03-20 | 中南大学 | Method for multilevel creep age forming of Al-Zn-Mg-Cu series aluminium alloy plate |
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| CN101076613A (en) * | 2004-12-13 | 2007-11-21 | 爱尔康何纳吕公司 | Low internal stress a-zn-cu-mg alloy high strength board |
| CN102978544A (en) * | 2012-11-21 | 2013-03-20 | 中南大学 | Method for multilevel creep age forming of Al-Zn-Mg-Cu series aluminium alloy plate |
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