KR101409586B1 - High temperature aluminium alloy - Google Patents

High temperature aluminium alloy Download PDF

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KR101409586B1
KR101409586B1 KR1020060079102A KR20060079102A KR101409586B1 KR 101409586 B1 KR101409586 B1 KR 101409586B1 KR 1020060079102 A KR1020060079102 A KR 1020060079102A KR 20060079102 A KR20060079102 A KR 20060079102A KR 101409586 B1 KR101409586 B1 KR 101409586B1
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aluminum alloy
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KR20070022610A (en
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뤼디거 프랑커
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알루미늄 라인펠덴 게엠베하
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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
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • 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
    • C22C21/06—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
    • 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
    • C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
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Abstract

Heat resistant Al alloy of type AlMgSi of long lasting heat resistance for production of thermally and mechanically strained cast components, where the contents of alloying elements Mg and Si in wt.% in a Cartesian coordinate system is restricted by a polygon A with specific coordinates and the alloy contains (wt.%):Mn (0.1-1), and maximum amounts of Fe (1.0), Cu (3.0), Ni (2.0), Cr (0.5), Co (0.6), Zn (0.2), Ti (0.2), Zr (0.5), Be (0.008), V (.5), remainder Al and impurities to an individual maximum of 0.05 wt.5 and total maximum of 0.2 wt.%.

Description

고온 알루미늄합금 {HIGH TEMPERATURE ALUMINIUM ALLOY}[0001] HIGH TEMPERATURE ALUMINUM ALLOY [0002]

도 1은 합금원소 마그네슘와 규소의 함량범위를 보인 다이아그램.FIG. 1 is a diagram showing a content range of magnesium element and silicon element. FIG.

본 발명은 고온에서 양호한 크리프강도를 갖는 AlMgSi 형태의 알루미늄합금에 관한 것으로, 높은 열응력과 기계적인 응력을 받는 주조물의 제조를 위한 고온 알루미늄합금에 관한 것이다.The present invention relates to aluminum alloys in the form of AlMgSi with good creep strength at high temperatures and to high temperature aluminum alloys for the production of castings subjected to high thermal and mechanical stresses.

디젤연료의 개선된 연소가 이루어지고 높은 비출력을 얻기 위한 디젤엔진의 계속된 개발은 특히 보다 높은 폭발압력이 이루어지도록 하여 실린더 크랭크케이스에 작용하는 맥동성의 기계적인 부하가 높도록 하는 바, 이러한 크랭크케이스를 구성하는 재료의 요구가 매우 커지도록 한다. 높은 피로강도는 별문제로 하더라도, 재료의 고온에서 양호한 내구강도는 실린더 크랭크케이스의 제조에 이용하기 위하여서는 다른 전제조건이 된다.Continued development of diesel engines to achieve improved combustion of diesel fuel and to achieve a higher output power, in particular, allows a higher explosive pressure to be achieved, resulting in a higher mechanical load on the cylinder crankcase, So that the demand of the material constituting the crankcase is greatly increased. Apart from high fatigue strength, good durability at high temperatures of the material is another prerequisite for use in the manufacture of the cylinder crankcase.

AlSi 합금은 오늘날 일반적으로 큰 열응력을 받는 구성요소용으로 사용되며, 이러한 고온강도는 합금에 구리를 첨가함으로서 얻을 수 있다. 그러나, 구리는 적열취성(赤熱脆性; hot shortness)을 증가시키고 가주성(可鑄性)에 좋지 않은 효과를 준다. 특히 고온강도가 요구되는 분야는 주로 자동차 엔진의 실린더 헤드의 영역이다. 예를 들어 F.J. Feikus, "Optimierung von Aluminium-Silicium-Gusslegierungen fur Zylinderkopfe" [Optimization of Aluminium-Silicon Casting alloys for Cylinder Heads], Giesserei-Praxis, 1999, Volume 2, pp.50-57 를 참조바란다.AlSi alloys are commonly used today for components subjected to large thermal stresses, and these high temperature strengths can be obtained by adding copper to the alloy. However, copper increases hot brittleness (hot shortness) and has a bad effect on flexibility. Particularly, the field requiring high temperature strength is mainly the area of the cylinder head of an automobile engine. For example, F.J. Optimization of Aluminum-Silicon Casting Alloys for Cylinder Heads, Giesserei-Praxis, 1999, Volume 2, pp. 50-57.

실린더 헤드의 제조를 위한 고온 AlMgSi 합금이 특허문헌 US-A-3 868 250으로부터 알려져 있다. 이러한 합금은 통상적인 첨가물 이외에 0.6~4.5% w/w의 규소, 1~4.5% w/w 가 유리 마그네슘인 2.5~11% w/w의 마그네슘과, 0.6~1.8% w/w의 망간을 함유한다.High temperature AlMgSi alloys for the production of cylinder heads are known from patent document US-A-3 868 250. Such an alloy may contain 0.6 to 4.5% w / w of silicon, 1 to 4.5% w / w of free magnesium, 2.5 to 11% w / w of magnesium and 0.6 to 1.8% w / do.

특허문헌 WO-A-96 15281에는 3.0~6.0% w/w의 마그네슘, 1.4~3.5% w/w의 규소, 0.5~2.0% w/w의 망간, 최대 0.15% w/w의 철, 최대 0.2% w/w의 티타늄과, 나머지 알루미늄으로 이루어지고 각각으로는 0.02% w/w 그리고 전체적으로는 0.2% w/w의 불순물을 포함하는 알루미늄합금이 기술되어 있다. 이러한 합금은 기계적인 특성에 대하여 많은 요구가 이루어지는 구성요소의 제조를 위하여 적합한 것이다. 합금의 처리는 압력주조(pressure die casting), 반용융주조(thixocasting) 또는 반용융단조(thixoforging)에 의하여 이루어지는 것이 좋다.The patent document WO-A-96 15281 discloses a composition comprising 3.0 to 6.0% w / w of magnesium, 1.4 to 3.5% w / w of silicon, 0.5 to 2.0% of manganese, 0.15% of w / an aluminum alloy comprising% w / w of titanium and the balance aluminum, each containing 0.02% w / w and 0.2% w / w as a whole. Such alloys are suitable for the manufacture of components where there is a great demand for mechanical properties. The treatment of the alloy is preferably performed by pressure die casting, thixocasting or thixoforging.

압력주조, 스퀴즈 캐스팅, 반용융성형 또는 반용융단조에 의한 안전구성요소의 제조를 위한 유사한 알루미늄합금이 특허문헌 WO-A-0043560으로부터 알려져 있다. 이 합금은 2.5~7.0% w/w의 마그네슘, 1.0~3.0% w/w의 규소, 0.3~0.49% w/w의 망간, 0.1~0.3% w/w의 크롬, 최대 0.15% w/w의 티타늄, 최대 0.15% w/w의 철, 최대 0.00005% w/w의 칼슘, 최대 0.00005% w/w의 나트륨, 최대 0.002% w/w의 인, 각각 최대 0.02% w/w의 불순물과, 나머지 알루미늄으로 구성된다.Similar aluminum alloys for the production of safety components by pressure casting, squeeze casting, semi-molten molding or semi-molten forging are known from patent document WO-A-0043560. The alloy comprises from 2.5 to 7.0% w / w of magnesium, from 1.0 to 3.0% w / w of silicon, from 0.3 to 0.49% of manganese, of from 0.1 to 0.3% w / w of chromium, of up to 0.15% w / w of Titanium, up to 0.15% w / w iron, up to 0.00005% w / w calcium, up to 0.00005% w / w sodium, up to 0.002% w / w respectively up to 0.02% w / w impurities, Aluminum.

특허문헌 EP-A-1 234 893으로부터 알려진 AlMgSi 형태의 주조합금은 3.0~7.0% w/w의 마그네슘, 1.7~3.0% w/w의 규소, 0.2~0.48% w/w의 망간, 0.15~0.35% w/w의 철, 최대 0.2% w/w의 티타늄, 선택적으로 또한 0.1~0.4% w/w의 니켈과 나머지 알루미늄으로 구성되고 각각으로는 최대 0.02% w/w 와 전체적으로는 최대 0.2% w/w의 제조관련 불순물을 포함하며, 다른 조건으로서 합금내의 마그네슘과 규소의 비율은 고체상 알루미늄과 Mg2Si 를 갖는 준이원계(quasi-binary) 공융혼합물의 조성과 일치하는 1.7:1 의 중량비 비율 마그네슘:규소 로 본질적으로 존재한다는 것이다. 이러한 합금은 가압다이캐스트, 유동캐스팅 및 반용융캐스팅에 의한 자동차의 안전구성요소의 제조에 적합하다.The cast alloy in the form of AlMgSi, known from patent document EP-A-1 234 893, comprises from 3.0 to 7.0% w / w magnesium, from 1.7 to 3.0% w / w silicon, from 0.2 to 0.48% w / % w / w iron, up to 0.2% w / w titanium, optionally also from 0.1 to 0.4% w / w nickel and the balance aluminum, each with a maximum of 0.02% w / w and a maximum of 0.2% w / w includes a manufacturing-related impurities, as another condition of magnesium and the proportion of silicon in the alloy is solid aluminum and 1.7 to match the composition of the quasi-binary system (quasi-binary) eutectic mixture having a Mg 2 Si: weight ratio of 1 Mg : It is essentially present in silicon. Such alloys are suitable for the production of automotive safety components by pressurized die casting, fluid casting and semi-molten casting.

본 발명의 목적은 높은 열응력과 기계적인 응력을 받는 주조물의 제조를 위 한 것으로 고온에서 양호한 크리프강도를 갖는 알루미늄합금을 제공하는데 있다. 이러한 합금은 특히 가압다이캐스트(pressure die casting)에 적합하여야 하고 또한 중력주조, 저압주조 및 샌드캐스팅에도 적합하여야 한다.It is an object of the present invention to provide an aluminum alloy having good creep strength at high temperatures for the production of castings subjected to high thermal and mechanical stresses. Such alloys should be particularly suitable for pressure die casting and also for gravity casting, low pressure casting and sand casting.

본 발명의 일 특정목적은 가압다이캐스트에 의하여 제조되는 내연기관, 특히 디젤엔진의 실린더 크랭크케이스를 위한 알루미늄합금을 제공하는데 있다.It is a particular object of the present invention to provide an aluminum alloy for an internal combustion engine manufactured by press die casting, particularly a cylinder crankcase of a diesel engine.

이러한 합금으로 주조되는 구성요소는 높은 강도와 함께 높은 연성을 보여야 한다. 구성요소의 계획된 기계적인 특성은 다음과 같이 정의된다.Components molded with these alloys should exhibit high ductility with high strength. The planned mechanical properties of the component are defined as follows.

내력 Rp0.2 > 170 MPaStrength Rp0.2> 170 MPa

인장강도 Rm > 230 MPaTensile strength Rm> 230 MPa

파단신장률 A5 > 6%Breaking elongation A5 > 6%

합금의 가주성은 현재 사용되고 있는 AlSiCu 주조합금의 가주성에 비견될 수 있어야 하며, 이러한 합금은 적열취성의 어떠한 성향도 보여서는 아니된다.The porosity of the alloy should be comparable to that of currently used AlSiCu cast alloys, and these alloys should not exhibit any tendency of fusing embrittlement.

이러한 목적은 본 발명에 따라서 달성될 수 있는 바, 본 발명은 카티전 좌표계(Cartesian coordinate system)에서 % w/w의 합금원소 마그네슘과 규소의 함량이 [마그네슘; 규소]좌표 [8.5; 2.7] [8.5; 4.7] [6.3; 2.7] [6.3; 3.4]의 다각형 A로 한정되고, 또한 합금이 0.1~1% w/w의 망간, 최대 1% w/w의 철, 최대 3% w/w의 구리, 최대 2% w/w의 니켈, 최대 0.5% w/w의 크롬, 최대 0.6% w/w의 코발트, 최대 0.2% w/w의 아연, 최대 0.2% w/w의 티타늄, 최대 0.5% w/w의 지르코늄, 최대 0.008% w/w의 베릴륨, 최대 0.5% w/w의 바나듐과, 나머지는 알루미늄과 각각으로는 최대 0.05% w/w 그리고 전체적으로는 최대 0.2% w/w 의 다른 원소 및 제조관련 불순물로 구성됨을 특징으로 한다.This object can be achieved according to the present invention, wherein the content of elemental magnesium and silicon of% w / w in a Cartesian coordinate system is [magnesium; Silicon] coordinates [8.5; 2.7] [8.5; 4.7] [6.3; 2.7] [6.3; 3.4%, and also alloys of 0.1-1% w / w of manganese, up to 1% w / w of iron, up to 3% w / w of copper, up to 2% w / Up to 0.2% w / w titanium, up to 0.5% w / w zirconium, up to 0.008% w / w chromium, up to 0.6% w / w cobalt, up to 0.2% w / By weight of beryllium, up to 0.5% w / w vanadium and the remainder aluminum and up to 0.05% w / w each and up to 0.2% w / w overall of other elements and manufacturing related impurities.

다음의 함량범위는 주요합금원소 마그네슘과 규소에 대한 것이다.The following ranges are for the main alloying elements magnesium and silicon.

마그네슘 6.9~7.9% w/w, 특히 7.1~7.7% w/wMagnesium 6.9 to 7.9% w / w, especially 7.1 to 7.7% w / w

규소 3.0~3.7% w/w, 특히 3.1~3.6% w/w3.0-3.7% w / w of silicon, especially 3.1-3.6% w / w

특히, 카티전 좌표계에서 % w/w로 합금의 원소인 마그네슘과 규소의 함량이 [마그네슘; 규소]좌표 [7.9; 3.0] [7.9; 3.7] [6.9; 3.0] [6.9; 3.7]의 다각형 B, 특히 [마그네슘; 규소]좌표 [7.7; 3.1] [7.7; 3.6] [7.1; 3.1] [7.1; 3.6]의 다각형 C로 한정되는 합금이 좋다.In particular, the content of magnesium and silicon, which are elements of the alloy in% w / w in the Cartesian coordinate system, is [magnesium; Silicon] coordinates [7.9; 3.0] [7.9; 3.7] [6.9; 3.0] [6.9; 3.7] polygon B, especially [magnesium; Silicon] coordinates [7.7; 3.1] [7.7; 3.6] [7.1; 3.1] [7.1; 3.6] is preferable.

합금원소 망간과 철은 몰드에 주조물이 달라붙는 것을 방지한다. 철의 함량이 높으면 신장률이 감소되는 대신에 높은 고온강도를 얻을 수 있다. 망간은 충분히 적열경도에 기여한다. 따라서, 응용분야에 따라 합금원소 철과 망간은 다음과 같이 서로 평형이 유지되는 것이 좋다.Alloy elements Manganese and iron prevent the casting from sticking to the mold. If the content of iron is high, the elongation can be reduced, but high high-temperature strength can be obtained. The manganese contributes sufficiently to the heat hardness. Therefore, depending on the application field, it is preferable that the ferroalloy element and the manganese are kept in equilibrium with each other as follows.

철의 함량이 0.4~1% w/w, 특히 0.5~0.7% w/w일 때, 망간의 함량은 0.1~0.5% w/w, 특히 0.3~0.5% w/w으로 설정된다.When the content of iron is 0.4 to 1% w / w, particularly 0.5 to 0.7% w / w, the content of manganese is set to 0.1 to 0.5% w / w, especially 0.3 to 0.5% w / w.

철의 함량이 최대 0.2% w/w, 특히 최대 0.15% w/w일 때, 망간의 함량은 0.5~1% w/w, 특히 0.5~0.8% w/w으로 설정된다.When the content of iron is at most 0.2% w / w, especially at most 0.15% w / w, the content of manganese is set at 0.5-1% w / w, especially 0.5-0.8% w / w.

다른 합금원소에 대하여서는 다음의 함량범위가 좋다.For the other alloying elements, the following content range is good.

구리 0.2~1.2% w/w, 바람직하기로는 0.3~0.8% w/w, 특히 0.4~0.6% w/wCopper, 0.2-1.2% w / w, preferably 0.3-0.8% w / w, especially 0.4-0.6% w / w

니켈 0.8~1.2% w/wNickel 0.8-1.2% w / w

크롬 최대 0.2% w/w, 바람직하기로는 최대 0.05% w/wChromium up to 0.2% w / w, preferably up to 0.05% w / w

코발트 0.3~0.6% w/wCobalt 0.3-0.6% w / w

티타늄 0.05~0.15% w/wTitanium 0.05 to 0.15% w / w

철 최대 0.15% w/wIron up to 0.15% w / w

지르코늄 0.1~0.4% w/wZirconium 0.1-0.4% w / w

구리는 부가적인 강도의 증가를 가져오나, 함량이 증가하면 합금의 부식특성이 악화된다.Copper has an additional strength increase, but as the content increases, the corrosion properties of the alloy deteriorate.

코발트의 첨가는 합금의 이형특성이 더욱 개선될 수 있도록 한다.The addition of cobalt makes it possible to further improve the release characteristics of the alloy.

티타늄과 지르코늄은 결정립미세화를 개선한다. 양호한 결정립미세화는 주조특성과 기계적인 특성의 개선에 충분히 기여한다.Titanium and zirconium improve grain refinement. Good grain refinement sufficiently contributes to improvement of casting characteristics and mechanical properties.

바나듐과 베릴륨의 조합은 드로스(dross)의 생성을 줄여준다. 0.02~0.15% w/w의 바나듐, 바람직하기로는 0.02~0.05% w/w의 바나듐, 특히 0.02~0.05% w/w의 바나듐을 첨가할 때, 베릴륨은 60 ppm이면 충분하다.The combination of vanadium and beryllium reduces the production of dross. When adding 0.02 to 0.15% w / w of vanadium, preferably 0.02 to 0.05% w / w of vanadium, especially 0.02 to 0.05% w / w of vanadium, berpium at 60 ppm is sufficient.

본 발명에 따른 알루미늄합금의 바람직한 응용분야는 압력주조, 몰드주조 또는 샌드캐스팅에 의하여 높은 열응력 및 기계적인 응력을 받는 구성요소의 제조, 특히 압력주조로 제조되는 자동차 엔진용 실린더 크랭크케이스의 제조이다.A preferred application field of the aluminum alloy according to the present invention is the manufacture of components subjected to high thermal stress and mechanical stress by pressure casting, mold casting or sand casting, especially the manufacture of cylinder crankcase for automobile engines manufactured by pressure casting .

본 발명에 따른 합금은 또한 별도의 용체화 어닐링 없이 단일단계의 열처리후 자동차 구조의 구조적인 구성요소를 위하여 요구된 기계적인 특성을 만족시킨다.The alloy according to the present invention also satisfies the mechanical properties required for structural components of automotive structures after a single step of heat treatment without separate solution annealing.

본 발명을 첨부도면에 의거하여 보다 상세히 설명하면 다음과 같다.The present invention will now be described in more detail with reference to the accompanying drawings.

도 1에서 보인 다각형 A는 합금원소 마그네슘과 규소의 함량범위를 한정하고 있는 바, 다각형 B와 C가 더 좋은 범위이다. 직선 E는 준이원계 공융혼합물 Al-Mg2Si의 조성에 해당한다. 이와 같이, 본 발명에 따른 합금조성은 마그네슘이 많은 쪽에 놓인다.The polygon A shown in Fig. 1 defines the content range of the magnesium element and silicon, and polygons B and C have a better range. The straight line E corresponds to the composition of the quasi-binary eutectic mixture Al-Mg 2 Si. Thus, the alloy composition according to the present invention is placed on the more magnesium-rich side.

본 발명에 따른 합금으로 상이한 벽두께를 갖는 압력주조판을 주조하였다. 가압다이캐스트판으로부터 인장강도 시편을 제작하였다. 내력(Rp0.2), 인장강도(Rm) 및 파단신장률(A)의 기계적인 특성이 다음의 조건으로 인장강도 시편에서 측정되었다.A pressure casting plate having different wall thicknesses was cast with the alloy according to the present invention. A tensile strength specimen was prepared from the press die cast plate. The mechanical properties of proof stress (Rp0.2), tensile strength (Rm) and elongation at break (A) were measured on tensile strength specimens under the following conditions.

F 주조상태F cast state

Water/F 주조상태로, 이형후 담금질(quenched)Quenched after water / F casting,

F>24h 주조상태로, 실온에서 >24 시간 저장F> 24h In casting state, stored> 24 hours at room temperature

Water/F>24 주조상태로, 이형후 담금질, 실온에서 >24 시간 저장Water / F> 24 casting, quenching after release, storage at room temperature> 24 hours

여러 단일단계 열처리후 250℃~380℃ 범위의 온도에서 처리, 이후 150℃~250℃ 범위의 온도에서 장기저장.After several single-step heat treatment, treatment at temperatures ranging from 250 ° C to 380 ° C, after long-term storage at temperatures ranging from 150 ° C to 250 ° C.

검사된 합금이 표 1에 요약되었다. 문자 A는 구리가 첨가된 합금을 나타내고, 문자 B는 구리가 첨가되지 않은 합금을 나타낸다.The tested alloys are summarized in Table 1. The letter A represents an alloy to which copper is added, and the letter B represents an alloy to which no copper is added.

표 2는 표 1에서 보인 합금의 인장강도 시편에서 측정된 기계적인 특성의 결과를 보이고 있다.Table 2 shows the results of the mechanical properties measured on the tensile strength specimens of the alloys shown in Table 1.

표 1과 2에 포함되지 않은 고온에서 양호한 크리프강도를 갖는 합금은 다음의 조성을 보였다(% w/w).Alloys with good creep strength at elevated temperatures not included in Tables 1 and 2 exhibited the following composition (% w / w).

3.4 규소, 0.6 철, 0.42 구리, 0.32 망간, 7.4 마그네슘. 0.07 티타늄, 0.9 니켈, 0.024 바나듐 및 0.004 베릴륨3.4 silicon, 0.6 iron, 0.42 copper, 0.32 manganese, 7.4 magnesium. 0.07 titanium, 0.9 nickel, 0.024 vanadium and 0.004 beryllium

장기시험결과는 본 발명에 따른 합금이 고온에서 양호한 크리프강도를 보였다. 90분 동안 350℃와 380℃에서 단일단계 열처리후의 기계적인 특성은 본 발명에 따른 합금이 자동차 구조의 구조적인 구성요소를 위한 요구를 만족시키는 것으로 보인다.The long-term test results show that the alloys according to the invention have good creep strength at high temperatures. Mechanical properties after a single step heat treatment at 350 < 0 > C and 380 < 0 > C for 90 minutes seem to satisfy the need for structural components of automotive structures in accordance with the present invention.

표 1: 합금의 화학조성 % w/wTable 1: Chemical composition of the alloy% w / w

Figure 112013501672436-pat00002
Figure 112013501672436-pat00002

표 2: 합금의 기계적인 특성Table 2: Mechanical properties of alloys


합금의 형태
Type of alloy

초기상태
Initial state
열처리
Heat treatment
Rp0.2
[MPa]
Rp0.2
[MPa]
Rm
[MPa]
Rm
[MPa]
A5
[%]
A5
[%]








1







One










FF 210210 359359 8.68.6 Water/FWater / F 181181 347347 9.69.6 F>24hF> 24h 204204 353353 8.98.9 Water/F>24hWater / F> 24h 176176 347347 13.413.4




F>24h




F> 24h









250℃/10min250 ° C / 10 min 216216 352352 7.47.4 250℃/20min250 ° C / 20 min 218218 352352 6.86.8 250℃/90min250 ° C / 90 min 207207 349349 10.810.8 350℃/10min350 ° C / 10 min 154154 315315 12.512.5 350℃/20min350 DEG C / 20 min 158158 315315 10.610.6 350℃/90min350 DEG C / 90 min 147147 306306 11.411.4 380℃/10min380 ° C / 10 min 145145 304304 14.114.1 380℃/20min380 C / 20 min 139139 299299 13.913.9 380℃/90min380 ° C / 90 min 137137 299299 16.716.7 150℃/100h150 ° C / 100h 221221 365365 9.49.4 180℃/100h180 ° C / 100h 214214 346346 66 200℃/100h200 ° C / 100h 211211 354354 9.49.4 250℃/100h250 ° C / 100h 184184 336336 11.711.7 150℃/500h150 ° C / 500h 223223 353353 66 180℃/500h180 ° C / 500h 216216 357357 9.79.7 200℃/500h200 ° C / 500h 202202 349349 9.29.2 250℃/500h250 ° C / 500h 170170 327327 12.312.3 1A


















1A


















FF 234234 345345 4.24.2 Water/FWater / F 170170 319319 4.94.9 F>24hF> 24h 205205 355355 7.17.1 Water/F>24hWater / F> 24h 188188 340340 5.65.6



F>24h



F> 24h










250℃/10min250 ° C / 10 min 227227 355355 6.66.6 250℃/20min250 ° C / 20 min 217217 354354 7.57.5 250℃/90min250 ° C / 90 min 213213 350350 7.97.9 350℃/10min350 ° C / 10 min 157157 328328 10.410.4 350℃/20min350 DEG C / 20 min 151151 317317 9.39.3 350℃/90min350 DEG C / 90 min 142142 312312 12.112.1 380℃/10min380 ° C / 10 min 141141 315315 12.612.6 380℃/20min380 C / 20 min 137137 312312 12.412.4 380℃/90min380 ° C / 90 min 133133 309309 12.212.2 150℃/100h150 ° C / 100h 248248 370370 55 180℃/100h180 ° C / 100h 249249 373373 6.36.3 200℃/100h200 ° C / 100h 215215 346346 6.26.2 250℃/100h250 ° C / 100h 185185 329329 7.67.6 150℃/500h150 ° C / 500h 239239 368368 6.56.5 180℃/500h180 ° C / 500h 227227 352352 6.96.9 200℃/500h200 ° C / 500h 215215 350350 7.87.8 250℃/500h250 ° C / 500h 162162 317317 8.98.9
2
2


F>24h
F> 24h

212212 364364 10.710.7 250℃/90min250 ° C / 90 min 223223 358358 9.99.9 350℃/90min350 DEG C / 90 min 152152 312312 13.913.9 380℃/90min380 ° C / 90 min 139139 297297 17.917.9
2A
2A


F>24h
F> 24h

241241 394394 7.87.8 250℃/90min250 ° C / 90 min 234234 375375 8.58.5 350℃/90min350 DEG C / 90 min 163163 332332 99 380℃/90min380 ° C / 90 min 144144 328328 13.713.7
3
3


F>24h
F> 24h

158158 321321 9.99.9 250℃/90min250 ° C / 90 min 164164 324324 10.410.4 350℃/90min350 DEG C / 90 min 143143 307307 1212 380℃/90min380 ° C / 90 min 129129 292292 16.416.4
3A
3A


F>24h
F> 24h

173173 326326 66 250℃/90min250 ° C / 90 min 181181 325325 5.95.9 350℃/90min350 DEG C / 90 min 151151 315315 6.96.9 380℃/90min380 ° C / 90 min 137137 312312 9.59.5
4
4


F>24h
F> 24h

138138 304304 8.28.2 250℃/90min250 ° C / 90 min 145145 309309 99 350℃/90min350 DEG C / 90 min 133133 297297 8.48.4 380℃/90min380 ° C / 90 min 123123 286286 12.712.7
4A
4A


F>24h
F> 24h

152152 284284 4.34.3 250℃/90min250 ° C / 90 min 163163 278278 3.73.7 350℃/90min350 DEG C / 90 min 139139 286286 5.25.2 380℃/90min380 ° C / 90 min 131131 285285 5.75.7

이상에서 설명한 바와 같이 본 발명에 따른 알루미늄합금은 높은 열응력과 기계적인 응력을 받는 주조물의 제조를 위한 것으로 고온에서 양호한 크리프강도를 갖는다.As described above, the aluminum alloy according to the present invention is intended for the production of castings subjected to high thermal and mechanical stresses and has good creep strength at high temperatures.

Claims (17)

열응력과 기계적인 응력을 받는 주조물의 제조를 위한 것으로 고온에서 크리프강도를 갖는 AlMgSi 형태의 알루미늄합금에 있어서, 카티전 좌표계에서 % w/w로 합금의 원소인 마그네슘과 규소의 함량이 [마그네슘; 규소]좌표 [8.5; 2.7] [8.5; 4.7] [6.3; 2.7] [6.3; 3.4]의 다각형 A로 한정되고, 합금이 0.1~1% w/w의 망간, 0.000001∼1% w/w의 철, 0.000001∼3% w/w의 구리, 0.000001∼2% w/w의 니켈, 0.000001∼0.5% w/w의 크롬, 0.000001∼0.6% w/w의 코발트, 0.000001∼0.2% w/w의 아연, 0.000001∼0.2% w/w의 티타늄, 0.000001∼0.5% w/w의 지르코늄, 0.000001∼0.008% w/w의 베릴륨, 0.000001∼0.5% w/w의 바나듐과, 나머지는 알루미늄과 각각으로는 0.000001∼0.05% w/w 그리고 전체적으로는 0.000001∼0.2% w/w의 제조관련 불순물을 포함함을 특징으로 하는 알루미늄합금.For aluminum alloys in the form of AlMgSi having creep strength at high temperatures for the production of castings subjected to thermal and mechanical stresses, the content of magnesium and silicon, which are elements of the alloy in% w / w in the Cartesian coordinate system, is [magnesium; Silicon] coordinates [8.5; 2.7] [8.5; 4.7] [6.3; 2.7] [6.3; 3.4], and the alloy is 0.1-1% w / w of manganese, 0.000001-1% w / w of iron, 0.000001-3% w / w of copper, 0.000001-2% w / 0.000001 to 0.5% w / w chromium, 0.000001-0.6% w / w cobalt, 0.000001-0.2% w / w zinc, 0.000001-0.2% w / w titanium, 0.000001-0.5% w / w zirconium , 0.000001-0.008% w / w beryllium, 0.000001-0.5% w / w vanadium and the balance aluminum with 0.000001-0.05% w / w and altogether 0.000001-0.2% w / w, ≪ / RTI > 제1항에 있어서, 마그네슘의 함량이 6.9~7.9% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of magnesium is 6.9 to 7.9% w / w. 제1항에 있어서, 규소의 함량이 3.0~3.7% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of silicon is 3.0 to 3.7% w / w. 제1항에 있어서, 카티전 좌표계에서 % w/w로 합금의 원소인 마그네슘과 규소의 함량이 [마그네슘; 규소]좌표 [7.9; 3.0] [7.9; 3.7] [6.9; 3.0] [6.9; 3.7]의 다각형 B로 한정됨을 특징으로 하는 알루미늄합금.The method according to claim 1, wherein the content of magnesium and silicon, which are elements of the alloy in% w / w in the Cartesian coordinate system, is [magnesium; Silicon] coordinates [7.9; 3.0] [7.9; 3.7] [6.9; 3.0] [6.9; 3.7]. ≪ / RTI > 제4항에 있어서, 카티전 좌표계에서 % w/w로 합금의 원소인 마그네슘과 규소의 함량이 [마그네슘; 규소]좌표 [7.7; 3.1] [7.7; 3.6] [7.1; 3.1] [7.1; 3.6]의 다각형 C로 한정됨을 특징으로 하는 알루미늄합금.The method according to claim 4, wherein the content of magnesium and silicon, which are elements of the alloy in% w / w in the Cartesian coordinate system, is [magnesium; Silicon] coordinates [7.7; 3.1] [7.7; 3.6] [7.1; 3.1] [7.1; 3.6] of the polygonal C of the aluminum alloy. 제1항에 있어서, 철의 함량이 0.4~1% w/w이고, 망간의 함량은 0.1~0.5% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of iron is 0.4 to 1% w / w, and the content of manganese is 0.1 to 0.5% w / w. 제1항에 있어서, 철의 함량이 0.000001∼0.2% w/w이고, 망간의 함량은 0.5~1% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of iron is 0.000001 to 0.2% w / w, and the content of manganese is 0.5 to 1% w / w. 제1항에 있어서, 구리의 함량이 0.2~1.2% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of copper is 0.2 to 1.2% w / w. 제1항에 있어서, 니켈의 함량이 0.8~1.2% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of nickel is 0.8 to 1.2% w / w. 제1항에 있어서, 크롬의 함량이 0.000001∼0.2% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of chromium is 0.000001 to 0.2% w / w. 제1항에 있어서, 코발트의 함량이 0.3~0.6% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of cobalt is 0.3 to 0.6% w / w. 제1항에 있어서, 티타늄의 함량이 0.05~0.15% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of titanium is 0.05 to 0.15% w / w. 제1항에 있어서, 지르코늄의 함량이 0.1~0.4% w/w임을 특징으로 하는 알루미늄합금.The aluminum alloy according to claim 1, wherein the content of zirconium is 0.1 to 0.4% w / w. 삭제delete 가압다이캐스트, 몰드주조 또는 샌드캐스팅에 의하여 제조되되 열응력과 기계적인 응력을 받는 구성요소를 얻기 위하여 청구항 제1항 내지 제13항의 어느 한 항에 따른 알루미늄합금을 사용하는 알루미늄합금의 사용방법.A method of using an aluminum alloy using an aluminum alloy according to any one of claims 1 to 13 to obtain a component which is produced by press die casting, mold casting or sand casting but which receives thermal stress and mechanical stress. 제15항에 있어서, 가압다이캐스트법(pressure die casting method)으로 제조되는 자동차 엔진구조물의 실린더 크랭크케이스에 대하여 알루미늄 합금을 사용하는 알루미늄합금의 사용방법.16. The method of claim 15, wherein the aluminum alloy is used for a cylinder crankcase of an automotive engine structure manufactured by a pressure die casting method. 가압다이캐스트법으로 제조되는 자동차 구조물의 안전구성요소를 얻기 위하여 청구항 제1항 내지 제13항의 어느 한 항에 따른 알루미늄합금을 사용하는 알루미늄합금의 사용방법.A method of using an aluminum alloy using an aluminum alloy according to any one of claims 1 to 13 to obtain a safety component of an automotive structure manufactured by a pressurized die casting method.
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