CN105256207A - Magnesium alloy forging and preparation method thereof - Google Patents
Magnesium alloy forging and preparation method thereof Download PDFInfo
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- CN105256207A CN105256207A CN201510780977.4A CN201510780977A CN105256207A CN 105256207 A CN105256207 A CN 105256207A CN 201510780977 A CN201510780977 A CN 201510780977A CN 105256207 A CN105256207 A CN 105256207A
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Abstract
The invention discloses a magnesium alloy forging. The magnesium alloy forging is characterized in that the alloy comprises the following components in percentage by mass: 4-5% of Cu, 1-2% of Mn, 2-3% of Sn, 0.1-0.2% of Nb, 0.2-0.3% of Al, 0.1-0.2% of Mn, 0.05-0.07% of Pr, 0.02-0.03% of Ni, 0.03-0.04% of Fe, 0.02-0.03% of Nd, 0.04-0.06% of La and the balance of magnesium and inevitable non-metallic inclusions. Meanwhile, a corresponding preparation method is provided. The magnesium alloy forging has a tensile strength of above 350MPa, and has excellent room temperature and high temperature properties, and thus can be widely applied to formation and production of commercial parts including automobile parts, electronic product parts and aerospace aviation parts.
Description
Technical field
The present invention relates to a kind of magnesium alloy forging, belong to Magnuminium and manufacture field.
Background technology
Magnesium alloy has low density, high specific strength, lower rigidity, larger ballistic work absorb, easily machining and the advantage such as easy to be recycled, obtain increasingly extensive application in fields such as automobile, aerospace, electronics at present, be considered to a kind of and effectively alleviate quality, save energy, environmental friendliness, be conducive to the ideal material of Sustainable development.But the intensity of magnesium alloy is not high hampers its broadened application scope.Because intensity is low, the component for magnesium alloy such as automobiles have to increase wall thickness, and the intensity therefore improving magnesium alloy makes it have good over-all properties, are one of focuses of novel magnesium alloy exploitation.In the alloying research of high-strength magnesium alloy, the interpolation of alloying element mainly concentrates on aluminium, zinc, silicon, strontium, copper, nickel, manganese, zirconium, calcium, lithium and bismuth or scandium, yttrium and rare earth element.It is strengthened mainly solution strengthening and forms intermetallic compound with magnesium and strengthens.The alloy of current high-strength heat-resisting magnesium alloy mainly high rare-earth content, because the price of rare earth is higher abroad, except out of trade in aerospace, in general industry, as Automobile Enterprises adopt few.Although China is rare earth resources big country, compare with other alloying element, price or higher.And many investigators of China often bias toward the research of magnesium-rare earth, the content of the rare earth of some achievements in research or scandium, yttrium is up to more than 10%.The price of magnesium alloy height is caused also to be the major reason that restriction magnesium alloy is applied.Therefore, the exploitation of current high-strength heat-resistant magnesium alloy should take into account and improves performance and reduce costs two aspect factors.The as cast condition intensity of the intensity of current cast magnesium alloys is not high, and general σ b is lower than 300MPa.Such as, the Mg-Y-Re alloy sigma b be applied on aircraft and racing car cylinder is 275MPa, σ 0.2 be 200MPa, δ is 4%.In forging high-strength magnesium alloy Zn6Al3, add Si, Mn, Ca through two ageing treatment, it be 300 ~ 400MPa, σ 0.2 is 200 ~ 300MPa that mechanical property can reach σ b.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of magnesium alloy forging and preparation method thereof, reach the high strength wrought magnesium alloy preparing tensile strength 350MPa.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of magnesium alloy forging is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu4-5%, Mn1-2%, Sn2-3%, Nb0.1-0.2%, Al0.2-0.3%, Mn0.1-0.2%, Pr0.05-0.07%, Ni0.02-0.03%, Fe0.03-0.04%, Nd0.02-0.03%, La0.04-0.06%, surplus is magnesium and inevitable nonmetal inclusion
The preparation method of a kind of magnesium alloy forging of the present invention comprises the following step:
(1) preparing raw material magnesium alloy adopts metal M g, Ni metal, metal M n and metal Sn and other elements to prepare burden according to chemical composition ratio, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, after metal M g all melts, add Ni metal, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in.Control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas.(3) cast, die casting are in 780 DEG C of cast, die casting, and under normal casting process, model adopts metal mold or sand mold.(4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, then under 210 DEG C of temperature condition timeliness 24 hours.(5) strand after solution treatment carries out forging and stamping thermal pretreatment, and forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, to forge and press after pre-treatment; (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
Described magnesium alloy forging, chemical component weight per-cent is: Cu4.5%.
Described magnesium alloy forging, chemical component weight per-cent is: Mn1.5%.
Described magnesium alloy forging, chemical component weight per-cent is: Sn2.5%.
Described magnesium alloy forging, chemical component weight per-cent is: Nb0.15%.
Described magnesium alloy forging, chemical component weight per-cent is: Al0.25%.
Described magnesium alloy forging, chemical component weight per-cent is: Mn0.15%.
Described magnesium alloy forging, chemical component weight per-cent is: Pr0.06%.
Described magnesium alloy forging, chemical component weight per-cent is: Ni0.025%.
Described magnesium alloy forging, chemical component weight per-cent is: Fe0.035%.
Described magnesium alloy forging, chemical component weight per-cent is: Nd0.025%.
Described magnesium alloy forging, chemical component weight per-cent is: La0.05%.
Compared with prior art, the present invention has following beneficial effect:
The beneficial effect of preparation method of the present invention is:
High-strength magnesium alloy forging prepared by the inventive method, tensile strength reaches more than 350MPa, has good room temperature and high-temperature behavior, can be widely used in commercial components, comprises shaping and the production of automobile component, electronic product components and space flight and aviation parts.
Embodiment
Embodiment 1:
A kind of magnesium alloy forging is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu4%, Mn1%, Sn2%, Nb0.1%, Al0.2%, Mn0.1%, Pr0.05%, Ni0.02%, Fe0.03%, Nd0.02%, La0.04%, surplus is magnesium and inevitable nonmetal inclusion
A kind of preparation method of magnesium alloy forging comprises the following step:
(1) preparing raw material magnesium alloy adopts metal M g, Ni metal, metal M n and metal Sn and other elements to prepare burden according to chemical composition ratio, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, after metal M g all melts, add Ni metal, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in.Control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas.(3) cast, die casting are in 780 DEG C of cast, die casting, and under normal casting process, model adopts metal mold or sand mold.(4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, then under 210 DEG C of temperature condition timeliness 24 hours.(5) strand after solution treatment carries out forging and stamping thermal pretreatment, and forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, to forge and press after pre-treatment; (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
Embodiment 2:
A kind of magnesium alloy forging is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu5%, Mn2%, Sn3%, Nb0.2%, Al0.3%, Mn0.2%, Pr0.07%, Ni0.03%, Fe0.04%, Nd0.03%, La0.06%, surplus is magnesium and inevitable nonmetal inclusion
A kind of preparation method of magnesium alloy forging comprises the following step:
(1) preparing raw material magnesium alloy adopts metal M g, Ni metal, metal M n and metal Sn and other elements to prepare burden according to chemical composition ratio, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, after metal M g all melts, add Ni metal, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in.Control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas.(3) cast, die casting are in 780 DEG C of cast, die casting, and under normal casting process, model adopts metal mold or sand mold.(4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, then under 210 DEG C of temperature condition timeliness 24 hours.(5) strand after solution treatment carries out forging and stamping thermal pretreatment, and forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, to forge and press after pre-treatment; (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
Embodiment 3:
A kind of magnesium alloy forging is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu4.5%, Mn1.5%, Sn2.5%, Nb0.15%, Al0.25%, Mn0.15%, Pr0.06%, Ni0.025%, Fe0.035%, Nd0.025%, La0.05%, surplus is magnesium and inevitable nonmetal inclusion
A kind of preparation method of magnesium alloy forging comprises the following step:
(1) preparing raw material magnesium alloy adopts metal M g, Ni metal, metal M n and metal Sn and other elements to prepare burden according to chemical composition ratio, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, after metal M g all melts, add Ni metal, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in.Control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas.(3) cast, die casting are in 780 DEG C of cast, die casting, and under normal casting process, model adopts metal mold or sand mold.(4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, then under 210 DEG C of temperature condition timeliness 24 hours.(5) strand after solution treatment carries out forging and stamping thermal pretreatment, and forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, to forge and press after pre-treatment; (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
Embodiment 4:
A kind of magnesium alloy forging is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu4.5%, Mn2%, Sn2.5%, Nb0.15%, Al0.25%, Mn0.15%, Pr0.06%, Ni0.025%, Fe0.035%, Nd0.025%, La0.05%, surplus is magnesium and inevitable nonmetal inclusion
A kind of preparation method of magnesium alloy forging comprises the following step:
(1) preparing raw material magnesium alloy adopts metal M g, Ni metal, metal M n and metal Sn and other elements to prepare burden according to chemical composition ratio, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, after metal M g all melts, add Ni metal, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in.Control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas.(3) cast, die casting are in 780 DEG C of cast, die casting, and under normal casting process, model adopts metal mold or sand mold.(4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, then under 210 DEG C of temperature condition timeliness 24 hours.(5) strand after solution treatment carries out forging and stamping thermal pretreatment, and forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, to forge and press after pre-treatment; (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
Embodiment 5:
A kind of magnesium alloy forging is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu4.5%, Mn2%, Sn3%, Nb0.15%, Al0.25%, Mn0.15%, Pr0.06%, Ni0.025%, Fe0.035%, Nd0.025%, La0.05%, surplus is magnesium and inevitable nonmetal inclusion
A kind of preparation method of magnesium alloy forging comprises the following step:
(1) preparing raw material magnesium alloy adopts metal M g, Ni metal, metal M n and metal Sn and other elements to prepare burden according to chemical composition ratio, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, after metal M g all melts, add Ni metal, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in.Control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas.(3) cast, die casting are in 780 DEG C of cast, die casting, and under normal casting process, model adopts metal mold or sand mold.(4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, then under 210 DEG C of temperature condition timeliness 24 hours.(5) strand after solution treatment carries out forging and stamping thermal pretreatment, and forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, to forge and press after pre-treatment; (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
Embodiment 6:
A kind of magnesium alloy forging is provided, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu4.5%, Mn2%, Sn3%, Nb0.2%, Al0.25%, Mn0.15%, Pr0.06%, Ni0.025%, Fe0.035%, Nd0.025%, La0.05%, surplus is magnesium and inevitable nonmetal inclusion
A kind of preparation method of magnesium alloy forging comprises the following step:
(1) preparing raw material magnesium alloy adopts metal M g, Ni metal, metal M n and metal Sn and other elements to prepare burden according to chemical composition ratio, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, after metal M g all melts, add Ni metal, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in.Control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas.(3) cast, die casting are in 780 DEG C of cast, die casting, and under normal casting process, model adopts metal mold or sand mold.(4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, then under 210 DEG C of temperature condition timeliness 24 hours.(5) strand after solution treatment carries out forging and stamping thermal pretreatment, and forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, to forge and press after pre-treatment; (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
Claims (8)
1. a magnesium alloy forging, it is characterized in that: each constituent mass percentage composition of described alloy comprises: Cu4-5%, Mn1-2%, Sn2-3%, Nb0.1-0.2%, Al0.2-0.3%, Mn0.1-0.2%, Pr0.05-0.07%, Ni0.02-0.03%, Fe0.03-0.04%, Nd0.02-0.03%, La0.04-0.06%, surplus is magnesium and inevitable nonmetal inclusion.
2. magnesium alloy forging as claimed in claim 1, chemical component weight per-cent is: Cu4.5%.
3. magnesium alloy forging as claimed in claim 1, chemical component weight per-cent is: Mn1.5%.
4. magnesium alloy forging as claimed in claim 1, chemical component weight per-cent is: Sn2.5%.
5. magnesium alloy forging as claimed in claim 1, chemical component weight per-cent is: Nb0.15%.
6. magnesium alloy forging as claimed in claim 1, chemical component weight per-cent is: Al0.25%.
7. magnesium alloy forging as claimed in claim 1, chemical component weight per-cent is: Mn0.15%.
8. prepare a method for magnesium alloy forging as described in claim 1-7, it is characterized in that:
Described method comprises the following step:
(1) prepare raw material magnesium alloy and adopt metal M g, Ni metal, metal M n and metal Sn are prepared burden according to chemical composition ratio with other elements, (2) melting adopts iron crucible, in the melting of conventional, electric-resistance stove, first smelting metal Mg, Ni metal is added after metal M g all melts, metal M n, metal Sn and other elements, wherein Cu adopts bell jar press-in, control smelting temperature 790 DEG C, adopt N2 and SF6 mixed gas as shielding gas, (3) pour into a mould, die casting is 780 DEG C of cast, die casting, under normal casting process, model adopts metal mold or sand mold, (4) thermal treatment solid solution after 10 hours under 450 DEG C of conditions, timeliness 24 hours under 210 DEG C of temperature condition again, (5) strand after solution treatment carries out forging and stamping thermal pretreatment, forging and stamping thermal pretreatment technique is: strand to be placed at the temperature of 520 DEG C preheating 5 hours, forge and press after pre-treatment, (6) after forging and stamping, forging is heated to 320 DEG C, is incubated 10 hours.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548572A (en) * | 2003-05-16 | 2004-11-24 | 中国科学院金属研究所 | Endogenous composite material of high-strength magnesium-base metallic glass |
| CN102449177A (en) * | 2009-05-29 | 2012-05-09 | 住友电气工业株式会社 | Linear object, bolt, nut and washer each comprising magnesium alloy |
| CN103740992A (en) * | 2014-01-16 | 2014-04-23 | 张霞 | Multi-element heat-resistant magnesium alloy and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548572A (en) * | 2003-05-16 | 2004-11-24 | 中国科学院金属研究所 | Endogenous composite material of high-strength magnesium-base metallic glass |
| CN102449177A (en) * | 2009-05-29 | 2012-05-09 | 住友电气工业株式会社 | Linear object, bolt, nut and washer each comprising magnesium alloy |
| CN103740992A (en) * | 2014-01-16 | 2014-04-23 | 张霞 | Multi-element heat-resistant magnesium alloy and preparation method thereof |
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