WO2011152617A2 - 알루미늄 합금 및 알루미늄 합금 주물 - Google Patents
알루미늄 합금 및 알루미늄 합금 주물 Download PDFInfo
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- WO2011152617A2 WO2011152617A2 PCT/KR2011/003521 KR2011003521W WO2011152617A2 WO 2011152617 A2 WO2011152617 A2 WO 2011152617A2 KR 2011003521 W KR2011003521 W KR 2011003521W WO 2011152617 A2 WO2011152617 A2 WO 2011152617A2
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- aluminum alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
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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
- C22C21/10—Alloys based on aluminium with zinc 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
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
Definitions
- the present invention relates to metal alloys and, more particularly, to aluminum alloys used in components such as electrical, electronic, mechanical, and the like, and aluminum alloy castings produced using the same.
- the present invention has been made to solve the above-mentioned problems, the strength is superior to conventional commercial aluminum alloy even through a conventional die casting method, having a strength similar to that of conventional stainless steel (for example, Stainless Steel 304) more than twice An aluminum alloy having light properties and an aluminum alloy casting made using such an aluminum alloy are provided.
- conventional stainless steel for example, Stainless Steel 304.
- the invention contains 4 to 13% by weight of silicon (Si), 1 to 5% by weight of copper (Cu) and 26 or more and less than 40% by weight of zinc (Zn), the remainder is aluminum (Al) ) And an unavoidable impurity is provided.
- the content of the silicon may be 5 to 10% by weight.
- the content of the silicon may be 5 to 8% by weight or less, in this case, the content of copper may be 2 to 5% by weight, furthermore the content of zinc 26 to 35% by weight.
- Si silicon
- Cu copper
- Zn zinc
- strontium Aluminum alloy including Sr
- Al aluminum
- the content of the silicon may be 5 to 10% by weight.
- the content of the silicon may be 5 to 8% by weight or less, wherein the copper content may be 2 to 5% by weight, furthermore zinc content May be 26 to 35% by weight.
- the strontium may be greater than 0 and less than 0.04% by weight.
- the strontium may be greater than 0 and less than 0.02% by weight.
- titanium (Ti), magnesium (Mg), nickel (Ni), vanadium (V), tin (Sn), iron (Fe), chromium (Cr ), Zirconium (Zr), scandium (Sc) and manganese (Mn) may further include any one or more of one or more elements selected from 3 wt% or more (greater than zero).
- an aluminum alloy casting manufactured using the above-described aluminum alloy is provided.
- Aluminum alloys and aluminum alloy castings according to embodiments of the present invention exhibited superior strength compared to conventional commercial aluminum alloys by controlling the alloy composition, but also significantly lighter than stainless steels. Therefore, the aluminum alloy and the aluminum alloy casting according to embodiments of the present invention can be stably applied to small / light weight products as well as large products.
- Figure 1 shows the tensile test results of the experimental example and the ADC12 alloy of a commercial aluminum alloy according to the present invention.
- 3 and 4 are the results of observing the microstructure of the aluminum alloy according to an embodiment of the present invention.
- the weight percent (wt%) is expressed as a percentage of the weight of the component in the weight of the total alloy. It can be understood that the range for the weight percent does not include the boundary value when it is above or below, but includes the boundary value when it is simply designated as a range or above or below.
- unavoidable impurities may refer to impurities that can be introduced unintentionally in the manufacture of aluminum alloys or aluminum castings.
- the aluminum alloy according to an embodiment of the present invention may be formed by adding silicon (Si), copper (Cu), and zinc (Zn) to aluminum as a main element.
- the content of aluminum, which is the main element of the aluminum alloy, may occupy the remainder other than the additional element, and thus the content may vary depending on the content of the additional element.
- the aluminum alloy may contain unavoidable impurities which are inadvertently contained in each element or at the alloying stage.
- the aluminum alloy contains 4 to 13% by weight of silicon, 1 to 5% by weight of copper and at least 26 to less than 40% by weight of zinc, with the remainder consisting of aluminum and unavoidable impurities.
- Silicon is highly fluid in the molten aluminum and can be added to improve the injectability during solidification.
- Al-silicon alloy Al-Si alloy
- it may exhibit a mixed structure of the primary ⁇ -aluminum phase and the process silicon phase during casting, and the process silicon phase may be improved to be refined from the needle bed to the particulate or fibrous shape. In this case, the mechanical strength can be significantly improved.
- the silicon content of the present embodiment may be limited to the range of 4 to 13% by weight, may be strictly limited to the range of 5 to 10% by weight, and more strictly 5 to 8% by weight. It may be limited to the following.
- Copper has a maximum solid solubility of about 5.6% by weight at an eutectic temperature of 548 ° C. for aluminum and may exhibit a solid solution strengthening effect when employed in aluminum.
- zinc when added to aluminum, it reacts with zinc and aluminum to form an Al-Zn-Cu compound, which acts as an obstacle that prevents the movement of dislocations during deformation of the alloy or inhibits grain growth. It can contribute to improving the strength of the alloy.
- the copper content in the present embodiment may be limited to the range of 1 to 5% by weight, strictly 2 to 5% by weight, taking all of these effects into consideration.
- zinc is an element that is heavier than aluminum, and thus is disadvantageous in weight reduction. If the content exceeds 36% by weight, the vacancy of the ⁇ phase is a mixed phase of the ⁇ 'phase and the ⁇ phase as the two phases of vacancy, resulting in low strength and high elongation. The amount can be increased. In addition, when the zinc content is 40% by weight, the process Si phase in the aluminum alloy is present in the primary ⁇ phase, thereby increasing the grain size and decreasing the strength. Therefore, zinc needs to be limited to the range of less than 40% by weight in view of such a point.
- Aluminum alloy according to another embodiment of the present invention is 4 to 13% by weight of silicon (Si), 1 to 5% by weight of copper (Cu), 26 to more than 40% by weight of zinc (Zn), 0.1% by weight or less It may include strontium (Sr) and 43 to 69% by weight of aluminum (Al).
- the strength of the aluminum alloy may be improved by miniaturizing the crystal structure of the aluminum alloy. That is, in the case of an aluminum alloy containing silicon, it is possible to exhibit a mixed structure of the primary ⁇ phase and the eutectic Si phase during casting, and by adding strontium, it is possible to contribute to the improvement of strength by miniaturizing the microstructure of the eutectic Si phase.
- the strontium content of the present embodiment may be limited to the range of 0.1 wt% or less, strictly greater than 0 and less than 0.04 wt%, more strictly greater than 0 and less than 0.02 wt%, taking all these effects into consideration. .
- the main element aluminum may be added in small amounts of additive elements for improving the strength of the aluminum alloy.
- additive element titanium (Ti), magnesium (Mg), nickel (Ni), vanadium (V), tin (Sn), iron (Fe), chromium (Cr), zirconium (Zr), scandium (Sc) And manganese (Mn), and one or more selected from these additive elements may be added in a range of 3 wt% or less in total.
- Aluminum alloy casting according to an embodiment of the present invention can be manufactured using the above-described aluminum alloy.
- the casting may include a pure casting manufactured through casting and a product obtained by molding a preformed casting into a predetermined shape, such as an extrusion billet, a rolling plate, and the like.
- pure castings include sand casting, die casting, gravity mold casting, low pressure casting, squeeze casting, lost wax casting, thixo casting, and the like.
- Gravity casting may refer to a method of injecting a molten alloy into the mold using gravity
- low pressure casting may refer to a method of injecting molten metal into the mold by applying pressure to the molten surface of the molten alloy using gas.
- Thixocasting is a casting technique in a semi-melt state that combines the advantages of conventional casting and forging.
- the aluminum alloy casting according to this embodiment can be manufactured through any of the processes including the above-described process, and can have appropriate strength and workability without performing heat treatment.
- the aluminum alloy casting may undergo a post-manufacture heat treatment step depending on its use and shape.
- Table 1 shows the results of tensile strength as the alloy composition and the mechanical properties of the experimental and comparative examples according to the present invention.
- High purity aluminum (99.8%) and zinc (99.9%) were used to prepare an aluminum alloy according to the present experimental example, and an aluminum mother alloy containing silicon, copper and strontium was added for addition of silicon, copper and strontium, respectively. It was.
- Each alloying element was dissolved using an electric resistance furnace, and degassing and degassing treatment were performed by blowing argon (Ar) gas into the degassing apparatus for 5 minutes before injection.
- argon (Ar) gas blowing argon (Ar) gas into the degassing apparatus for 5 minutes before injection.
- strontium an aluminum mother alloy containing strontium was added and maintained for a predetermined time, followed by tapping to prepare a test piece.
- Specimens used to measure the mechanical properties of each experimental example were prepared using die casting. Specifically, a tensile test was performed two days after casting to cast a rod-shaped tensile specimen using a TOYO die-casting apparatus having a clamping force of 1,300 KN and to reduce the variation of mechanical properties. Mechanical properties were measured and seven or more specimens were used for the average value.
- the die casting used in this test was performed under the casting temperature of 963 to 983K and the mold temperature of 463 to 473K.
- the test piece used for the test was manufactured as No. 14 rod proportional test piece in accordance with KSB0802 standard.
- ADC12 alloy which is a commercial aluminum alloy, was used as a target for comparing the tensile strength of the aluminum alloy according to the present experimental example, and FIG. 1 shows the tensile test results of the experimental example 19 and the ADC12 alloy.
- the aluminum alloy according to the experimental example of the present invention shows a very excellent strength characteristics compared to the conventional commercial aluminum alloy.
- the reason why the aluminum alloy according to the present experimental example exhibits superior characteristics compared to the ADC12 alloy is that the aluminum structure is further refined by adding silicon and zinc to the aluminum.
- Al-xZn-ySi-zCu an aluminum alloy in which zinc, silicon, and copper are added by weight percent of x, y, and z, respectively, is expressed as Al-xZn-ySi-zCu.
- FIGS. 2A and 2C show the alloy structure of the Al-30Zn-6Si-2Cu and Al-40Zn-6Si-2Cu alloys, respectively.
- the aluminum-zinc process phase is uniformly dispersed at the grain boundary due to the excess zinc not dissolved in the primary ⁇ phase.
- FIG. 3 shows the results of the EDS analysis of the zinc content (% by weight) in each region of the Al-30Zn-6Si-2Cu alloy shown in FIG. 2B together with a table.
- the eutectic Si phase does not retreat to the grain boundary but is present in the primary ⁇ , resulting in an increase in grain size, resulting in a decrease in strength. It is expected to. Therefore, it is expected that the zinc content of less than 40% by weight is preferable in terms of strength improvement.
- the aluminum alloy according to the embodiment of the present invention was determined to exhibit a relatively good and stable strength characteristics compared to the region of 6 wt% or less when the silicon content exceeds 6 wt%.
- Experimental Examples 19-21 are all aluminum alloys which added 0.02 to 0.1 weight% of strontium besides silicon, copper, and zinc as an addition element of an aluminum alloy.
- 4A and 4B show the results of SEM observation of the alloy structure of the aluminum alloy having the same silicon, copper, and zinc composition as that of Experimental Example 18 without adding strontium and further adding 0.04% by weight of strontium.
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Abstract
Description
Si | Cu | Zn | Al | Sr | 인장강도(Mpa) | |
실험예 1 | 5.0 | 2.0 | 26.0 | 66.7 | 0.0 | 433.4 |
실험예 2 | 6.0 | 2.0 | 26.0 | 65.7 | 0.0 | 441.6 |
실험예 3 | 6.0 | 3.5 | 30.0 | 60.2 | 0.0 | 451.8 |
실험예 4 | 6.0 | 5.0 | 30.0 | 58.7 | 0.0 | 439.4 |
실험예 5 | 7.0 | 2.0 | 26.0 | 64.7 | 0.0 | 444.6 |
실험예 6 | 7.0 | 2.0 | 30.0 | 60.7 | 0.0 | 440.9 |
실험예 7 | 6.0 | 5.0 | 30.0 | 58.7 | 0.0 | 436.2 |
실험예 8 | 6.0 | 3.5 | 31.0 | 59.2 | 0.0 | 443.1 |
실험예 9 | 6.0 | 2.0 | 32.0 | 59.7 | 0.0 | 419.7 |
실험예10 | 6.0 | 2.0 | 32.0 | 59.7 | 0.0 | 416.8 |
실험예11 | 6.0 | 2.0 | 35.0 | 56.7 | 0.0 | 443.2 |
실험예12 | 6.0 | 3.5 | 35.0 | 55.2 | 0.0 | 444.0 |
실험예13 | 6.0 | 5.0 | 35.0 | 53.7 | 0.0 | 440.6 |
실험예14 | 8.0 | 2.0 | 26.0 | 63.7 | 0.0 | 441.7 |
실험예15 | 8.0 | 2.0 | 27.0 | 62.4 | 0.0 | 441.9 |
실험예16 | 8.0 | 3.5 | 28.0 | 60.2 | 0.0 | 436.7 |
실험예17 | 8.0 | 2.0 | 30.0 | 59.7 | 0.0 | 430.2 |
실험예18 | 6.0 | 2.0 | 30.0 | 61.5 | 0.0 | 420.2 |
실험예19 | 6.0 | 2.0 | 30.0 | 61.7 | 0.02 | 488.8 |
실험예20 | 6.0 | 2.0 | 28.0 | 63.6 | 0.02 | 465.1 |
실험예21 | 6.0 | 2.0 | 30.0 | 61.6 | 0.1 | 438.0 |
비교예1 | 0.0 | 2.1 | 30.1 | 67.4 | 0.0 | 321.1 |
Claims (14)
- 4 내지 13 중량%의 실리콘(Si), 1 내지 5 중량%의 구리(Cu) 및 26 이상 40 중량% 미만의 아연(Zn)을 함유하고, 나머지가 알루미늄(Al) 및 불가피 불순물로 이루어진, 알루미늄 합금.
- 제 1 항에 있어서, 상기 실리콘(Si)의 함유량은 5 내지 10 중량%인, 알루미늄 합금.
- 제 2 항에 있어서, 상기 실리콘(Si)의 함유량은 5 내지 8 중량% 이하인, 알루미늄 합금.
- 제 3 항에 있어서, 상기 구리(Cu)의 함유량은 2 내지 5 중량%인, 알루미늄 합금.
- 제 4 항에 있어서, 상기 아연(Zn)의 함유량은 26 내지 35 중량%인, 알루미늄 합금.
- 4 내지 13 중량%의 실리콘(Si);1 내지 5 중량%의 구리(Cu);26 이상 40 중량% 미만의 아연(Zn);0.1 중량% 이하의 스트론튬(Sr); 및43 내지 69 중량%의 알루미늄(Al)을 포함하는, 알루미늄 합금.
- 제 6 항에 있어서, 상기 실리콘(Si)의 함유량은 5 내지 10 중량%인, 알루미늄 합금.
- 제 7 항에 있어서, 상기 실리콘(Si)의 함유량은 5 내지 8 중량% 인, 알루미늄 합금.
- 제 8 항에 있어서, 구리(Cu)의 함유량은 2 내지 5 중량%인, 알루미늄 합금.
- 제 9 항에 있어서, 상기 아연(Zn)의 함유량은 26 내지 35 중량%인, 알루미늄 합금.
- 제 6 항에 있어서, 상기 스트론튬(Sr)의 함유량은 0.04 중량%(0 제외) 이하인, 알루미늄 합금.
- 제 11 항에 있어서, 상기 스트론튬(Sr)의 함유량은 0.02 중량%(0 제외) 이하인, 알루미늄 합금.
- 제 6 항에 있어서, 티타늄(Ti), 마그네슘(Mg), 니켈(Ni), 바나듐(V), 주석(Sn), 철(Fe), 크롬(Cr), 지르코늄(Zr), 스칸듐(Sc) 및 망간(Mn) 중에서 선택되는 하나 이상의 원소 중 어느 하나 이상을 총 3 중량%(0 초과) 이하로 더 포함하는, 알루미늄 합금.
- 제 1 내지 제 13 항의 어느 한 항에 따른 알루미늄 합금을 이용하여 제조된 알루미늄 합금 주물.
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DE112011101836T DE112011101836T5 (de) | 2010-05-29 | 2011-05-12 | Aluminiumlegierung und Aluminiumlegierungsgussteil |
US13/700,550 US20130209311A1 (en) | 2010-05-29 | 2011-05-12 | Aluminum alloy, and aluminum alloy casting |
CN2011800267252A CN103069029A (zh) | 2010-05-29 | 2011-05-12 | 铝合金及铝合金铸件 |
JP2013512523A JP2013529255A (ja) | 2010-05-29 | 2011-05-12 | アルミニウム合金およびアルミニウム合金鋳造 |
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KR10-2010-0050693 | 2010-05-29 | ||
KR1020100050693A KR101124235B1 (ko) | 2010-05-29 | 2010-05-29 | 알루미늄 합금 및 알루미늄 합금 주물 |
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WO2011152617A3 WO2011152617A3 (ko) | 2012-04-19 |
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JP (1) | JP2013529255A (ko) |
KR (1) | KR101124235B1 (ko) |
CN (1) | CN103069029A (ko) |
DE (1) | DE112011101836T5 (ko) |
WO (1) | WO2011152617A2 (ko) |
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KR20100050693A (ko) | 2008-11-06 | 2010-05-14 | 이인근 | 웹 기반 온톨로지 협업 구축 시스템에서 온톨로지 추론 엔진을 이용한 온톨로지의 논리기반 검색 및 논리기반 추론방법 및 그 시스템 |
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2010
- 2010-05-29 KR KR1020100050693A patent/KR101124235B1/ko not_active IP Right Cessation
-
2011
- 2011-05-12 CN CN2011800267252A patent/CN103069029A/zh active Pending
- 2011-05-12 DE DE112011101836T patent/DE112011101836T5/de not_active Withdrawn
- 2011-05-12 WO PCT/KR2011/003521 patent/WO2011152617A2/ko active Application Filing
- 2011-05-12 US US13/700,550 patent/US20130209311A1/en not_active Abandoned
- 2011-05-12 JP JP2013512523A patent/JP2013529255A/ja active Pending
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JP2008291364A (ja) * | 2007-05-24 | 2008-12-04 | Aluminium Rheinfelden Gmbh | 耐熱性アルミニウム合金 |
KR100961081B1 (ko) * | 2009-03-03 | 2010-06-08 | 임현규 | 고강도 경량 아연-알루미늄 합금 |
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CN103409673A (zh) * | 2013-08-26 | 2013-11-27 | 深圳市天合兴五金塑胶有限公司 | 高强性压铸铝钛合金 |
Also Published As
Publication number | Publication date |
---|---|
KR101124235B1 (ko) | 2012-03-27 |
WO2011152617A3 (ko) | 2012-04-19 |
DE112011101836T5 (de) | 2013-03-07 |
KR20110131327A (ko) | 2011-12-07 |
CN103069029A (zh) | 2013-04-24 |
JP2013529255A (ja) | 2013-07-18 |
US20130209311A1 (en) | 2013-08-15 |
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