CN112251655B - High-toughness liquid die forging cast aluminum alloy and preparation method thereof - Google Patents
High-toughness liquid die forging cast aluminum alloy and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
Abstract
The invention mainly provides a high-toughness liquid die forging cast aluminum alloy and a preparation method thereof, wherein the high-toughness liquid die forging cast aluminum alloy mainly comprises 1-20% of Si, 0.3-3% of Fe, 0.3-2% of Mn, 0-10% of Mg, 0-5% of Cu, 0.1-5% of Ni, 0.1-2% of Ti, 0-0.1% of Ca, 78-0.03% of Sr0, 0.01-0.1% of Sb, 0.004-0.2% of B and the balance of Al. The preparation method of the high-toughness liquid die forging cast aluminum alloy comprises the following steps: adjusting the components of the molten aluminum according to the components, degassing and refining, reducing the temperature of the melt after refining, carrying out heat preservation for a certain time, and carrying out liquid die forging after heat preservation to obtain an ingot or a part. The high-performance aluminum alloy liquid die forging casting part is prepared by adjusting components and performing an extrusion casting process.
Description
Technical Field
The invention relates to a high-performance aluminum alloy and a liquid die forging preparation method thereof, belonging to the technical field of aluminum alloy material preparation. In particular to a high-toughness liquid die forging cast aluminum alloy and a preparation method thereof.
Background
The aluminum alloy material has excellent physical properties such as high specific strength, specific stiffness, elastic modulus and the like, and is widely applied to preparation of lightweight automobile parts. With the increasing application range of light-weight parts of automobiles, higher and higher requirements are put on the performance of cast aluminum alloys for automobiles. Liquid die forging is a common production mode for casting aluminum alloy at present. The method has the characteristics of capability of eliminating the defects of shrinkage cavities, air holes and the like in the casting process of the aluminum alloy, high dimensional precision, compact structure and capability of carrying out heat treatment strengthening. However, the cast aluminum alloy produced by liquid die forging still has the problems of low elongation and poor toughness, wherein the elongation of the Al-Si cast alloy after liquid die forging is generally less than 6%, and the application of the cast aluminum alloy is limited.
A high-strength and high-toughness aluminum alloy prepared by extrusion casting and a casting method (CN 108048710A) thereof describe an extrusion casting preparation method of the high-strength and high-toughness aluminum alloy, the yield strength of the extrusion cast aluminum alloy T6 is improved to more than 300MPa, but the elongation is less than 8%, and the application of the cast aluminum alloy in high-toughness automobile parts is limited. An extrusion casting aluminum alloy material and a preparation method (CN 107937768B) thereof describe an aluminum alloy extrusion casting method, which obtains a casting aluminum alloy with yield strength more than 200MPa, but the elongation of the alloy is less than 3 percent, and the application condition of high toughness of the casting aluminum alloy can not be met.
Aiming at the defects of the toughness of the existing liquid die forging cast aluminum alloy, the invention prepares the high-toughness liquid die forging aluminum alloy material through double composite modification and refinement treatment.
Disclosure of Invention
The present invention aims to solve the above problems and disadvantages, and to provide a high-strength and high-toughness liquid die-forging cast aluminum alloy and a method thereof, which satisfy the application requirements of cast aluminum alloys in lightweight automotive parts.
The high-toughness liquid die forging cast aluminum alloy comprises 1-20% of Si, 0.3-3% of Fe0.3, 0.3-2% of Mn, 2-10% of Mg, 0-5% of Cu, 0.1-5% of Ni, 0.1-2% of Ti, 0.0-0.1% of Ca, 0-0.03% of Sr0, 0.01-0.1% of Sb, 0.004-0.2% of B, and the balance of Al and other unavoidable impurity elements, wherein the content of each impurity element is less than 0.02%, and the total amount of the impurity elements is less than 0.1%.
The preparation method of the high-toughness liquid die forging cast aluminum alloy is characterized by comprising the following steps of:
firstly, selecting pure metals as Si, Mg and Cu raw materials, and taking an aluminum intermediate alloy as the rest alloy element raw material with the content of more than 1 percent;
secondly, alloy smelting is carried out on the prepared alloy powder raw materials in a smelting furnace at the temperature of 700-750 ℃, and heat preservation is carried out on the raw materials at the temperature of 750-770 ℃ after the raw materials are molten;
thirdly, refining and degassing by using high-purity argon, wherein the purity of the high-purity argon must be more than 99.995%, and the degassing and refining time is 20-100 min;
fourthly, performing mixed modification treatment on the melt, wherein the mixed modification treatment is performed to perform mixed addition of Ca and Sr elements, wherein the mass ratio of the Ca element is 10-50%, and the mass ratio of the Sr element is 50-90%; ca element is added by Al-50% Ca or Al-75% Ca intermediate alloy, Sr element is added by Al-10% Sr or Al-20% Sr alloy, and the adding temperature is 700-800 ℃;
fifthly, cooling the aluminum melt after the secondary refining at a speed of 1-20 ℃/min, and then preserving heat for 20-80 min at a temperature of 50-100 ℃ higher than the liquidus of the melt;
sixthly, adding a Sb + B composite refiner during alloy structure refining treatment, wherein the mass percent of Sb is 30-60%, and the mass percent of B is 40-70%; sb element was added in the form of Al-Sb master alloy, B was 30 wt% Na2B4O7Adding the KCl with the weight percent of 40% and CaCl with the weight percent of 30% in a mixed salt form, wherein the adding temperature is 700-780 ℃;
and seventhly, stirring the melt for a certain time after the melt is subjected to heat preservation, and then performing a liquid die forging experiment, wherein the temperature in the furnace is controlled to be 700-750 ℃.
And eighthly, carrying out T6 heat treatment, wherein the solid solution temperature is 520-545 ℃ and the time is 2-10 h, the water quenching temperature is 25-50 ℃, the aging temperature is 140-180 ℃, and the aging time is 4-12 h. Finally obtaining the cast aluminum alloy material with excellent performance.
Compared with the prior art, the invention has the following beneficial effects:
on the basis of the existing component optimization, the method firstly carries out Ca + Sr mixed modification treatment on the alloy, effectively refines eutectic Si and various Cu-containing, Mg-containing and Ni-containing intermetallic compounds in the alloy, and then carries out Sb + B element mixed refinement treatment, and effectively refines alpha-Al crystal grains of the alloy; under the condition of effectively controlling the alloy structure, the temperature control of liquid die forging is further adjusted, so that the liquid die forging cast aluminum alloy without casting defects, with the yield strength of more than 320MPa and the elongation of more than 12 percent, is finally realized, and the application range of the cast aluminum alloy for the automobile is further expanded.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the scope of the present invention is not limited to the description.
Example 1: the embodiment of the invention provides a method for preparing a high-toughness liquid die forging cast aluminum alloy, which comprises the following specific steps:
the alloy comprises, by mass, 11% of Si, 0.8% of Fe, 0.5% of Mn, 3% of Mg, 2% of Cu, 1% of Ni, 0.6% of Ti, 0.03% of Ca, 0.02% of Sr, 0.05% of Sb, 0.08% of B, and the balance of Al
Firstly, selecting pure metals as Si, Mg and Cu raw materials, and taking an aluminum intermediate alloy as the rest alloy element raw material with the content of more than 1 percent;
secondly, alloy smelting is carried out on the prepared alloy powder raw materials in a smelting furnace at 750 ℃, and heat preservation is carried out on the raw materials at 770 ℃ after the raw materials are molten;
thirdly, refining and degassing by using high-purity argon, wherein the purity of the high-purity argon must be more than 99.995%, and the degassing and refining time is 20 min;
fourthly, performing mixed modification treatment on the melt, wherein the mixed modification treatment is performed to perform mixed addition of Ca and Sr elements, wherein the mass ratio of the Ca element is 10%, and the mass ratio of the Sr element is 90%; ca element is added by Al-50% Ca or Al-75% Ca intermediate alloy, Sr element is added by Al-10% Sr or Al-20% Sr alloy, and the adding temperature is 700 ℃;
fifthly, cooling the aluminum melt refined for the second time at a speed of 1 ℃/min, and then preserving heat for 20min at a temperature of 100 ℃ higher than the liquidus of the melt;
in the sixth step, the first step is carried out,adding a Sb + B composite refiner during the refining treatment of the alloy structure, wherein the mass percent of Sb is 30 percent, and the mass percent of B is 70 percent; sb element is added in the form of Al-Sb master alloy, B is 30 wt% Na2B4O7+40 wt% of KCl and 30 wt% of CaCl are added in the form of mixed salt, and the adding temperature is 700 ℃;
and seventhly, stirring the melt for a certain time after the melt is subjected to heat preservation, and then performing a liquid die forging experiment, wherein the temperature in the furnace is controlled at 750 ℃.
And step eight, carrying out T6 heat treatment, wherein the solid solution temperature is 520 ℃ and the time is 2h, the water quenching temperature is 25 ℃, the aging temperature is 140 ℃ and the aging time is 4 h. Finally obtaining the cast aluminum alloy material with excellent performance. Wherein the yield strength of the material is 330MPa, and the elongation is 13%.
Example 2: the embodiment of the invention provides a method for preparing a high-toughness liquid die forging cast aluminum alloy, which comprises the following specific steps:
the alloy comprises, by mass, 3% of Si, 3% of Fe, 2% of Mn, 10% of Mg, 5% of Cu, 5% of Ni, 2% of Ti, 0.1% of Ca, 0.03% of Sr, 0.1% of Sb, 0.2% of B, and the balance of Al
Firstly, selecting pure metals as Si, Mg and Cu raw materials, and taking an aluminum intermediate alloy as the rest alloy element raw material with the content of more than 1 percent;
secondly, performing alloy smelting on the prepared alloy powder raw materials in a smelting furnace at 700 ℃, and performing heat preservation at 750 ℃ after the raw materials are molten;
thirdly, refining and degassing by using high-purity argon, wherein the purity of the high-purity argon must be more than 99.995%, and the degassing and refining time is 100 min;
fourthly, performing mixed modification treatment on the melt, wherein the mixed modification treatment is performed to perform mixed addition of Ca and Sr elements, wherein the mass ratio of the Ca element is 50%, and the mass ratio of the Sr element is 50%; ca element is added by Al-50% Ca or Al-75% Ca intermediate alloy, Sr element is added by Al-10% Sr or Al-20% Sr alloy, and the adding temperature is 800 ℃;
fifthly, cooling the aluminum melt refined for the second time at a speed of 20 ℃/min, and then preserving heat for 80min at a temperature 50 ℃ higher than the liquidus of the melt;
sixthly, adding a Sb + B composite refiner during alloy structure refining treatment, wherein the mass percent of Sb is 60%, and the mass percent of B is 40%; sb element is added in the form of Al-Sb master alloy, B is 30 wt% Na2B4O7+40 wt% of KCl and 30 wt% of CaCl are added in the form of mixed salt, and the adding temperature is 780 ℃;
and seventhly, stirring the melt for a certain time after the melt is subjected to heat preservation, and then performing a liquid die forging experiment, wherein the temperature in the furnace is controlled at 700 ℃.
And step eight, carrying out T6 heat treatment, wherein the solid solution temperature is 545 ℃ and the time is 10 hours, the water quenching temperature is 50 ℃, the aging temperature is 180 ℃, and the aging time is 12 hours. Finally obtaining the cast aluminum alloy material with excellent performance. Wherein the yield strength of the material is 340MPa, and the elongation is 13%.
Example 3: the embodiment of the invention provides a method for preparing a high-toughness liquid die forging cast aluminum alloy, which comprises the following specific steps:
the alloy comprises, by mass, 1% of Si, 0.3% of Fe, 0.3% of Mn, 2% of Mg, 0% of Cu, 0.1% of Ni, 0.1% of Ti, 0.02% of Ca, 0.03% of Sr, 0.01% of Sb, 0.004% of B, and the balance of Al
Firstly, selecting pure metals as Si, Mg and Cu raw materials, and taking an aluminum intermediate alloy as the rest alloy element raw material with the content of more than 1 percent;
secondly, performing alloy smelting on the prepared alloy powder raw materials in a smelting furnace at 730 ℃, and performing heat preservation at 760 ℃ after the raw materials are molten;
thirdly, refining and degassing by using high-purity argon, wherein the purity of the high-purity argon must be more than 99.995%, and the degassing and refining time is 60 min;
fourthly, performing mixed modification treatment on the melt, wherein the mixed modification treatment is performed to perform mixed addition of Ca and Sr elements, wherein the mass ratio of the Ca element is 40%, and the mass ratio of the Sr element is 60%; ca element is added by Al-50% Ca or Al-75% Ca intermediate alloy, Sr element is added by Al-10% Sr or Al-20% Sr alloy, and the adding temperature is 760 ℃;
fifthly, cooling the aluminum melt refined for the second time at a speed of 10 ℃/min, and then preserving heat for 60min at a temperature of 70 ℃ higher than the liquidus of the melt;
sixthly, adding a Sb + B composite refiner during alloy structure refining treatment, wherein the mass percent of Sb is 40%, and the mass percent of B is 60%; sb element is added in the form of Al-Sb master alloy, B is 30 wt% Na2B4O7+40 wt% of KCl and 30 wt% of CaCl are added in the form of mixed salt, and the adding temperature is 760 ℃;
and seventhly, stirring the melt for a certain time after the melt is subjected to heat preservation, and then performing a liquid die forging experiment, wherein the temperature in the furnace is controlled at 730 ℃.
And step eight, carrying out T6 heat treatment, wherein the solid solution temperature is 535 ℃, the time is 7h, the water quenching temperature is 30 ℃, the aging temperature is 170 ℃, and the aging time is 8 h. Finally obtaining the cast aluminum alloy material with excellent performance. Wherein the yield strength of the material is 335MPa, and the elongation is 14%.
Table 1 shows that the mechanical properties of the material T6 in examples 1, 2 and 3 are compared with those of the prior patents at present.
Claims (3)
1. The high-toughness liquid die forging cast aluminum alloy is characterized by comprising 11% of Si, 0.8% of Fe, 0.5% of Mn, 3% of Mg, 2% of Cu, 1% of Ni, 0.6% of Ti, 0.03% of Ca, 0.02% of Sr, 0.05% of Sb, 0.08% of B and the balance of Al;
the preparation steps of the high-toughness liquid die forging cast aluminum alloy are as follows:
firstly, selecting pure metals as Si, Mg and Cu raw materials, and taking an aluminum intermediate alloy as the rest alloy element raw material with the content of more than 1 percent;
secondly, alloy smelting is carried out on the prepared alloy powder raw materials in a smelting furnace at 750 ℃, and heat preservation is carried out on the raw materials at 770 ℃ after the raw materials are molten;
thirdly, refining and degassing by using high-purity argon, wherein the purity of the high-purity argon must be more than 99.995%, and the degassing and refining time is 20 min;
fourthly, performing mixed modification treatment on the melt, wherein the mixed modification treatment is performed to perform mixed addition of Ca and Sr elements, wherein the mass ratio of the Ca element is 10%, and the mass ratio of the Sr element is 90%; ca element is added by Al-50% Ca or Al-75% Ca intermediate alloy, Sr element is added by Al-10% Sr or Al-20% Sr alloy, and the adding temperature is 700 ℃;
fifthly, cooling the aluminum melt at a speed of 1 ℃/min, and then preserving heat for 20min at a temperature of 100 ℃ higher than the liquidus of the melt;
sixthly, adding a Sb + B composite refiner during alloy structure refining treatment, wherein the mass percent of Sb is 30%, and the mass percent of B is 70%; sb is added in the form of Al-Sb master alloy, B is added in the form of mixed salt of 30 wt% of Na2B4O7, 40 wt% of KCl and 30 wt% of CaCl, and the adding temperature is 700 ℃;
seventhly, after the heat preservation of the melt is finished, stirring the melt for a certain time, and then performing a liquid forging experiment, wherein the temperature in the furnace is controlled at 750 ℃;
and eighthly, carrying out T6 heat treatment at the solid solution temperature of 520 ℃ for 2h, then carrying out water quenching at the water quenching temperature of 25 ℃, carrying out aging at the aging temperature of 140 ℃ for 4h, and finally obtaining the cast aluminum alloy material with excellent performance, wherein the yield strength of the material is 330MPa, the tensile strength is 360MPa, and the elongation is 13%.
2. The high-toughness liquid die forging cast aluminum alloy is characterized by comprising the following components of 3% of Si, 3% of Fe, 2% of Mn, 10% of Mg, 5% of Cu, 5% of Ni, 2% of Ti, 0.1% of Ca, 0.03% of Sr, 0.1% of Sb, 0.2% of B and the balance of Al;
the preparation steps of the high-toughness liquid die forging cast aluminum alloy are as follows:
firstly, selecting Si, Mg and Cu as pure metals, and selecting an aluminum intermediate alloy as an alloy element raw material with the content of more than 1 percent;
secondly, performing alloy smelting on the prepared alloy powder raw materials in a smelting furnace at 700 ℃, and performing heat preservation at 750 ℃ after the raw materials are molten;
thirdly, refining and degassing by using high-purity argon, wherein the purity of the high-purity argon must be more than 99.995%, and the degassing and refining time is 100 min;
fourthly, performing mixed modification treatment on the melt, wherein the mixed modification treatment is performed to perform mixed addition of Ca and Sr elements, wherein the mass ratio of the Ca element is 50%, and the mass ratio of the Sr element is 50%; ca element is added by Al-50% Ca or Al-75% Ca intermediate alloy, Sr element is added by Al-10% Sr or Al-20% Sr alloy, and the adding temperature is 800 ℃;
fifthly, cooling the aluminum melt at a speed of 20 ℃/min, and then preserving heat for 80min at a temperature 50 ℃ higher than the liquidus of the melt;
sixthly, adding a Sb + B composite refiner during alloy structure refining treatment, wherein the mass percent of Sb is 60%, and the mass percent of B is 40%; sb is added in the form of Al-Sb master alloy, B is added in the form of mixed salt of 30 wt% of Na2B4O7, 40 wt% of KCl and 30 wt% of CaCl, and the adding temperature is 780 ℃;
seventhly, after the heat preservation of the melt is finished, stirring the melt for a certain time, and then performing a liquid forging experiment, wherein the temperature in the furnace is controlled at 700 ℃;
and eighthly, carrying out T6 heat treatment at the solid solution temperature of 545 ℃ for 10h, then carrying out water quenching at the water quenching temperature of 50 ℃, carrying out aging at the aging temperature of 180 ℃ for 12h, and finally obtaining the cast aluminum alloy material with excellent performance, wherein the yield strength of the material is 340MPa, the tensile strength of the material is 375MPa, and the elongation of the material is 13%.
3. The high-toughness liquid die forging cast aluminum alloy is characterized by comprising 1% of Si, 0.3% of Fe, 0.3% of Mn, 0.2% of Mg, 0% of Cu, 0.1% of Ni, 0.1% of Ti, 0.02% of Ca, 0.03% of Sr, 0.01% of Sb, 0.004% of B and the balance of Al;
the preparation steps of the high-toughness liquid die forging cast aluminum alloy are as follows:
firstly, selecting pure metals as Si, Mg and Cu raw materials, and taking an aluminum intermediate alloy as the rest alloy element raw material with the content of more than 1 percent;
secondly, performing alloy smelting on the prepared alloy powder raw materials in a smelting furnace at 730 ℃, and performing heat preservation at 760 ℃ after the raw materials are molten;
thirdly, refining and degassing by using high-purity argon, wherein the purity of the high-purity argon must be more than 99.995%, and the degassing and refining time is 60 min;
fourthly, performing mixed modification treatment on the melt, wherein the mixed modification treatment is performed to perform mixed addition of Ca and Sr elements, wherein the mass ratio of the Ca element is 40%, and the mass ratio of the Sr element is 60%; ca element is added by Al-50% Ca or Al-75% Ca intermediate alloy, Sr element is added by Al-10% Sr or Al-20% Sr alloy, and the adding temperature is 760 ℃;
fifthly, cooling the aluminum melt at a speed of 10 ℃/min, and then preserving heat for 60min at a temperature of 70 ℃ higher than the liquidus of the melt;
sixthly, adding a Sb + B composite refiner during alloy structure refining treatment, wherein the mass percent of Sb is 40%, and the mass percent of B is 60%; sb is added in the form of Al-Sb master alloy, B is added in the form of mixed salt of 30 wt% of Na2B4O7, 40 wt% of KCl and 30 wt% of CaCl, and the adding temperature is 760 ℃;
seventhly, after the heat preservation of the melt is finished, stirring the melt for a certain time, and then performing a liquid forging experiment, wherein the temperature in the furnace is controlled at 730 ℃;
and eighthly, carrying out T6 heat treatment, wherein the solid solution temperature is 535 ℃, the time is 7h, the water quenching temperature is 30 ℃, the aging temperature is 170 ℃, and the aging time is 8h, and finally obtaining the cast aluminum alloy material with excellent performance, wherein the yield strength of the material is 335MPa, the tensile strength is 380MPa, and the elongation is 14%.
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| CN109897994A (en) * | 2019-04-19 | 2019-06-18 | 深圳市拜尔克科技有限公司 | Cast aluminium alloy gold and its casting technique are processed in liquid forging |
| CN110709526A (en) * | 2017-06-23 | 2020-01-17 | 株式会社大纪铝工业所 | Aluminum alloy and aluminum alloy cast product |
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| EP1716265B1 (en) * | 2003-12-18 | 2012-06-13 | Showa Denko K.K. | Method for producing shaped article of aluminum alloy and shaped aluminum alloy articl |
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|---|---|---|---|---|
| JPH09249949A (en) * | 1996-03-12 | 1997-09-22 | Nippon Light Metal Co Ltd | Production of aluminum extruded material forged product |
| CN110709526A (en) * | 2017-06-23 | 2020-01-17 | 株式会社大纪铝工业所 | Aluminum alloy and aluminum alloy cast product |
| CN108203780A (en) * | 2017-12-25 | 2018-06-26 | 广州和德汽车零部件技术有限公司 | A kind of liquid forging high-strength abrasion-proof aluminum alloy and preparation method thereof |
| CN109897994A (en) * | 2019-04-19 | 2019-06-18 | 深圳市拜尔克科技有限公司 | Cast aluminium alloy gold and its casting technique are processed in liquid forging |
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