JPH06228690A - High strength aluminum alloy clad excellent in formability - Google Patents

High strength aluminum alloy clad excellent in formability

Info

Publication number
JPH06228690A
JPH06228690A JP1609493A JP1609493A JPH06228690A JP H06228690 A JPH06228690 A JP H06228690A JP 1609493 A JP1609493 A JP 1609493A JP 1609493 A JP1609493 A JP 1609493A JP H06228690 A JPH06228690 A JP H06228690A
Authority
JP
Japan
Prior art keywords
less
alloy
aluminum alloy
core material
formability
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP1609493A
Other languages
Japanese (ja)
Inventor
Masao Kikuchi
正夫 菊地
Koji Sakuma
康治 佐久間
Natsuko Hashimoto
夏子 橋本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP1609493A priority Critical patent/JPH06228690A/en
Publication of JPH06228690A publication Critical patent/JPH06228690A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/01Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/016Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys

Abstract

PURPOSE:To obtain a high strength Al alloy clad sheet excellent in formability by cladding an Al-Mg alloy having a high concn. of Mg with an Al-Mg alloy having a low concn. of Mg. CONSTITUTION:One side or both sides of an Al-Mg alloy contg. 3.5-10% Mg as a core material are clad with an Al-Mg alloy contg. 0.8-2.0% Mg as a cladding material so that the thickness of the cladding material per one side is regulated to 3-20% of the total thickness and the objective high strength Al alloy clad sheet excellent in formability is obtd. A small amt. of a specified element such as Cu, Zn, Mn, Cr, Zr, V, Fe, Si or Ti may be incorporated into the core material and the cladding material.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は高強度で成形加工性に優
れ、自動車ボディパネルをはじめ、電気機器,建築用等
の成形加工用に適したアルミニウム合金合わせ板に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum alloy laminated plate having high strength and excellent in moldability and suitable for molding processes such as automobile body panels, electric equipment and construction.

【0002】[0002]

【従来の技術】従来より、自動車のボディシートなどの
成形加工用には主として冷延鋼板が用いられることが多
かった。しかしながら、最近では車体軽量化の要求から
アルミニウム合金板を使用することが検討され、一部使
用されている。自動車のボディシートは、プレス成形を
施して使用されることから高強度とともに成形加工性に
優れることが要求される。これまで自動車ボディシート
用アルミニウム合金としてはJISA5052,JIS
A5182,特開昭62−27544号公報,特公昭6
2−42985号公報などの合金で代表されるAl−M
g系合金,AA2036などで代表されるAl−Cu系
合金、およびAA6009,AA6010などで代表さ
れるAl−Mg−Si系合金が用いられている。これら
のうち、高濃度のMgを含有するAl−Mg系合金は鋼
板並みの強度が得られ、かつ成形性、耐食性に優れてい
るため、自動車ボディパネル用として最も多く使用され
ている。
2. Description of the Related Art Conventionally, cold-rolled steel sheets have often been used mainly for forming and processing automobile body sheets. However, recently, in order to reduce the weight of the vehicle body, the use of an aluminum alloy plate has been studied and partly used. Since a body sheet of an automobile is used after being subjected to press molding, it is required to have high strength and excellent moldability. Until now, JISA5052, JIS have been used as aluminum alloys for automobile body sheets.
A5182, JP-A-62-27544, JP-B-6
Al-M represented by alloys such as JP-A-2-42985
g-based alloys, Al-Cu-based alloys typified by AA2036, and Al-Mg-Si-based alloys typified by AA6009 and AA6010 are used. Of these, Al-Mg alloys containing a high concentration of Mg are most often used for automobile body panels because they have strength equivalent to steel plates and are excellent in formability and corrosion resistance.

【0003】しかしながら、本系合金は加工硬化指数n
値が高く、鋼板と同等以上の一様伸びを有しているにも
かかわらず、局部伸びが極端に小さいため、局部変形を
伴うような伸びフランジ加工や曲げ加工では鋼板に比べ
て成形性が劣る。大きな局部伸びは合金濃度を下げた低
濃度合金や純アルミニウムで得られるが、これらの合金
や純アルミニウムではボディパネルとしての強度が十分
ではない。このように、自動車のボディシートなどの成
形加工用アルミニウム合金板には、n値が高く、局部伸
びが大きく、かつ十分な強度を有することが求められて
いた。特開昭62−101429号公報,特開昭62−
158032号公報および特開昭62−158033号
公報では、Al−Mg系合金の表層を純アルミニウムで
覆うことを特徴とする高強度で曲げ加工性に優れたアル
ミニウム合金合わせ板が提案されているが、純アルミニ
ウムは軟らかいため、成形加工時あるいは取扱い時に傷
がつきやすく、ボディシートの表層としては好ましくな
い。
However, this system alloy has a work hardening index n.
Although it has a high value and has a uniform elongation equal to or higher than that of a steel sheet, its local elongation is extremely small. Inferior. Large local elongation can be obtained with low-concentration alloys with reduced alloy concentration and pure aluminum, but these alloys and pure aluminum do not have sufficient strength as a body panel. As described above, an aluminum alloy sheet for forming, such as an automobile body sheet, has been required to have a high n value, a large local elongation and a sufficient strength. JP-A-62-101429, JP-A-62-
Although Japanese Patent No. 158032 and Japanese Patent Application Laid-Open No. 62-158033 propose an aluminum alloy laminated plate having a high strength and excellent bending workability, which is characterized in that a surface layer of an Al-Mg alloy is covered with pure aluminum. Since pure aluminum is soft, it is easily scratched during molding or handling, which is not preferable as the surface layer of the body sheet.

【0004】[0004]

【発明が解決しようとする課題】本発明は上記現状を鑑
み、なされたものであり、表面に傷がつきにくくて、n
値が高く、局部伸びが大きく、かつ十分な強度を有する
自動車のボディシート用高成形性アルミニウム合金板を
提供することを目的としたものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is difficult for the surface to be scratched.
It is an object of the present invention to provide a highly formable aluminum alloy sheet for an automobile body sheet having a high value, a large local elongation and a sufficient strength.

【0005】[0005]

【課題を解決するための手段】そこで、本発明者はn値
が高く、かつ高強度のAl−高濃度Mg系合金に注目
し、本系合金の局部伸びを改善する方法を種々検討した
結果、この合金を芯材とし、これに局部伸びの大きなA
l−低濃度Mg系合金を皮材としてクラッドすることに
よって上記目的を達成できることを見い出し、本発明を
なすに至ったものである。すなわち、本発明は、重量%
で、Mg:3.5〜10%を含有し、残部がAlおよび
単独で0.1%以下の不純物からなるアルミニウム合金
を芯材とし、Mg:0.8〜2.0%を含有し、残部が
Alおよび単独で0.1%以下の不純物からなるアルミ
ニウム合金を皮材とし、かつ、皮材の厚さは片面につい
て全板厚の3〜20%とし、芯材の片面あるいは両面に
クラッドしたことを特徴とする成形加工性に優れた高強
度アルミニウム合金合わせ板を提供するものである。
Therefore, the present inventor has paid attention to Al-high-concentration Mg-based alloys having a high n value and high strength, and as a result of various studies on methods for improving the local elongation of this alloy. , With this alloy as the core material
The inventors have found that the above object can be achieved by clad with an l-low concentration Mg-based alloy as a skin material, and have completed the present invention. That is, the present invention is
In addition, Mg: 3.5 to 10% is contained, the balance is an aluminum alloy consisting of Al and 0.1% or less of impurities alone as a core material, and Mg: 0.8 to 2.0% is contained, The balance is made of an aluminum alloy consisting of Al and 0.1% or less of impurities alone, and the thickness of the skin material is 3 to 20% of the total plate thickness on one side, and clad on one or both sides of the core material. The present invention provides a high-strength aluminum alloy laminated plate having excellent forming processability.

【0006】なお、上記芯材のAl−Mg基合金には、
Mgのほかに、Cu:0.03〜1.5%,Zn:0.
03〜1.5%,Mn:0.03〜0.8%,Cr:
0.03〜0.5%,Zr:0.03〜0.3%,V:
0.03〜0.3%,Fe:0.05〜0.5%,S
i:0.05〜0.5%,Ti:0.005〜0.3%
のうちの1種または2種以上を含有することができ、ま
た上記皮材のAl−Mg基合金には、Mgのほかに、C
u:0.5%以下、Zn:0.5%以下、Mn:0.8
%以下、Cr:0.5%以下、Zr:0.3%以下、
V:0.3%以下、Fe:0.5%以下、Si:0.5
%以下、Ti:0.3%以下のうちの1種または2種以
上を含有することができる。以下に本発明を詳細に説明
する。
The Al-Mg based alloy of the core material is
In addition to Mg, Cu: 0.03 to 1.5%, Zn: 0.
03-1.5%, Mn: 0.03-0.8%, Cr:
0.03 to 0.5%, Zr: 0.03 to 0.3%, V:
0.03-0.3%, Fe: 0.05-0.5%, S
i: 0.05 to 0.5%, Ti: 0.005 to 0.3%
One or two or more of the above can be contained, and the Al-Mg based alloy of the above skin material contains C in addition to Mg.
u: 0.5% or less, Zn: 0.5% or less, Mn: 0.8
% Or less, Cr: 0.5% or less, Zr: 0.3% or less,
V: 0.3% or less, Fe: 0.5% or less, Si: 0.5
% Or less, Ti: 0.3% or less, and one or more kinds can be contained. The present invention will be described in detail below.

【0007】[0007]

【作用】本発明はn値が高く、高強度のAl−高濃度M
g系合金を芯材とし、その表層に局部伸びの大きなAl
−低濃度Mg系合金を皮材としてクラッドすることによ
って成形性に優れた高強度アルミニウム合金合わせ板を
提供するものである。芯材および皮材のアルミニウム合
金としては、基本的には、それぞれAl−高濃度Mg系
合金およびAl−低濃度Mg系合金であればよいが、そ
の成分組成の限定理由を次に述べる。まず、芯材の成分
組成の限定理由を述べる。芯材としてはn値が高く、か
つ高強度であることが要求される。そのためには高Mg
濃度のAl−Mg系合金を芯材として使用する。
The present invention has a high n value and high strength Al-high concentration M.
A g-based alloy is used as the core material, and the surface layer of which has a large local elongation
-To provide a high-strength aluminum alloy laminated plate having excellent formability by clad with a low-concentration Mg-based alloy as a skin material. Basically, the aluminum alloy for the core material and the skin material may be an Al-high concentration Mg-based alloy and an Al-low concentration Mg-based alloy, respectively. The reasons for limiting the component compositions will be described below. First, the reasons for limiting the component composition of the core material will be described. The core material is required to have a high n value and high strength. For that, high Mg
A high concentration of Al-Mg alloy is used as the core material.

【0008】Mgは強度とともに、均一伸び、n値を向
上させる元素であり、成形加工用アルミニウム合金の基
本となる元素であるが、含有量が3.5%未満ではその
効果は小さく、10%を越えると溶解時の酸化、圧延性
の低下など製造性が著しく低下する。したがって、Mg
の含有量は3.5〜10%とした。ZnおよびCuはい
ずれも強度向上に有効な元素であり、いずれか一方ある
いは双方が必要に応じて添加されるが、0.03%未満
ではその効果は十分ではなく、1.5%を越えると耐食
性が低下するとともに成形性も低下する。よって、Zn
およびCuの含有量は0.03〜1.5%とした。
[0008] Mg is an element that improves the uniform elongation and the n value together with the strength, and is the basic element of the aluminum alloy for forming, but if the content is less than 3.5%, its effect is small, and 10%. If it exceeds the above range, the productivity is remarkably deteriorated due to oxidation during melting and deterioration of rolling property. Therefore, Mg
Content was 3.5 to 10%. Zn and Cu are both effective elements for improving the strength, and one or both of them are added as required. However, if less than 0.03%, the effect is not sufficient, and if more than 1.5%. Corrosion resistance is reduced and formability is also reduced. Therefore, Zn
The Cu content was 0.03 to 1.5%.

【0009】Mn,Cr,ZrおよびVはいずれも結晶
粒を微細化、安定化するとともに強度を向上させる効果
を有する元素であり、必要に応じて1種または2種以上
が添加される。この場合、いずれの元素も0.03%未
満では上記の効果は得られず、一方、Mnが0.8%、
Crが0.5%、ZrおよびVが0.3%をそれぞれ越
えると上記の効果は飽和する上に、成形性を低下させ
る。よって、Mnの含有量は0.03〜0.8%、Cr
の含有量は0.03〜0.5%、ZrおよびVの含有量
はそれぞれ0.03〜0.3%とした。
Each of Mn, Cr, Zr and V is an element having the effect of refining and stabilizing the crystal grains and improving the strength, and one or more of them are added as required. In this case, if none of the elements is less than 0.03%, the above effect cannot be obtained, while Mn is 0.8%,
When Cr exceeds 0.5% and Zr and V exceed 0.3%, respectively, the above effect is saturated and the formability is deteriorated. Therefore, the content of Mn is 0.03 to 0.8%, Cr
Was 0.03 to 0.5%, and Zr and V were 0.03 to 0.3%, respectively.

【0010】FeおよびSiは本来不可避的不純物であ
るが、上記のMn,Cr,Zr,V等と同様の効果を有
しており、必要に応じていずれか一方あるいは双方が添
加される。この場合、いずれも0.05%未満では上記
の効果は得られず、0.5%以上では上記の効果は飽和
する上に、Al−Fe−Si系の金属間化合物を生成
し、成形性を低下させる。よって、FeおよびSiの含
有量はいずれも0.05〜0.5%とした。Tiは一般
に鋳塊の結晶粒微細化のため、単独あるいは微量のBと
組み合わせて添加される。この場合、Tiの含有量が
0.005%未満では上記の効果は得られず、0.3%
を越えるとその効果は飽和する。したがって、Tiの含
有量は0.005〜0.3%とした。
Although Fe and Si are essentially unavoidable impurities, they have the same effect as Mn, Cr, Zr, V, etc., and either one or both of them are added if necessary. In this case, in all cases, if the content is less than 0.05%, the above effect is not obtained, and if it is 0.5% or more, the above effect is saturated, and in addition, an Al-Fe-Si based intermetallic compound is formed, and formability Lower. Therefore, the contents of Fe and Si are both set to 0.05 to 0.5%. Ti is generally added alone or in combination with a slight amount of B in order to refine the crystal grains of the ingot. In this case, if the Ti content is less than 0.005%, the above effect cannot be obtained, and the content is 0.3%.
If it exceeds, the effect will be saturated. Therefore, the content of Ti is set to 0.005 to 0.3%.

【0011】次に、皮材の成分組成の限定理由を述べ
る。皮材は局部伸びを向上させるものであり、芯材より
も局部伸びが大きく、かつ自動車のボディシート材とし
て最低限の表面硬さを有していることが要求される。そ
のためには低Mg濃度のAl−Mg系合金を使用する。
Mgは硬さを向上させるのに最も有効な元素であり、ボ
ディシート材としての最低限の表面硬さを確保するため
に添加される。その効果は0.5%未満では不十分であ
り、2.0%を越えると局部伸びを著しく低下させる。
したがって、Mgの含有量は0.5〜2.0%とした。
Next, the reasons for limiting the composition of the skin material will be described. The skin material improves local elongation and is required to have a larger local elongation than the core material and to have a minimum surface hardness as a body sheet material for automobiles. For that purpose, an Al-Mg alloy having a low Mg concentration is used.
Mg is the most effective element for improving the hardness, and is added to secure the minimum surface hardness as a body sheet material. If the effect is less than 0.5%, the effect is insufficient, and if it exceeds 2.0%, the local elongation is significantly reduced.
Therefore, the content of Mg is set to 0.5 to 2.0%.

【0012】ZnおよびCuは硬さの向上に有効な元素
であり、必要に応じて1種あるいは2種が添加される
が、0.5%を越えると局部伸びの低下が著しい。よっ
て、ZnおよびCuの含有量は0.5%以下とした。M
n,Cr,Zr,V,FeおよびSiはいずれも結晶粒
を微細化、安定化するとともに硬さの向上に有効な元素
であり、必要に応じて1種または2種以上が添加される
が、Mnが0.8%、Cr,FeおよびSiが0.5
%、ZrおよびVが0.3%をそれぞれ越えると局部伸
びの低下が大きくなる。そのため、Mnの含有量は0.
8%以下、Cr,FeおよびSiの含有量は0.5%以
下、そしてZrおよびVの含有量は0.3%以下とし
た。
Zn and Cu are elements effective in improving the hardness, and one or two of them are added according to need. However, if over 0.5%, the local elongation is remarkably reduced. Therefore, the content of Zn and Cu is set to 0.5% or less. M
Each of n, Cr, Zr, V, Fe and Si is an element effective for refining and stabilizing crystal grains and improving hardness, and one or more kinds thereof are added as necessary. , Mn 0.8%, Cr, Fe and Si 0.5
%, Zr, and V each exceed 0.3%, the local elongation is greatly reduced. Therefore, the Mn content is 0.
The content of Cr, Fe and Si was 8% or less, the content of 0.5% or less, and the content of Zr and V was 0.3% or less.

【0013】Tiは鋳塊の結晶粒微細化のため、単独あ
るいは微量のBと組み合わせて添加されるが、0.3%
を越えると他の元素と同様、局部伸びを大きく低下させ
る。よって、Tiの含有量は0.3%以下とした。さら
に、皮材の厚さは強度と成形性のバランスに重要な影響
を及ぼす。皮材の厚さが片面につき全板厚の3%未満で
は強度の低下は小さいが、局部伸び、ひいては成形性の
向上がなく、また、20%を越えると強度の低下が著し
い。したがって、皮材の厚さは片面につき全板厚の3〜
20%(クラッド率)とする。クラッドの方法として
は、通常行われている方法でよく、例えば、熱間圧延
法,鋳込み複層法,爆着法等が利用できる。
[0013] Ti is added alone or in combination with a slight amount of B for refining the crystal grains of the ingot.
If it exceeds, the local elongation is greatly reduced like other elements. Therefore, the content of Ti is set to 0.3% or less. Furthermore, the thickness of the skin material has an important effect on the balance between strength and formability. When the thickness of the skin material is less than 3% of the total plate thickness on one side, the strength is not significantly reduced, but the local elongation and the formability are not improved, and when it exceeds 20%, the strength is significantly reduced. Therefore, the thickness of the skin material is 3 ~
20% (cladding rate). The clad method may be a commonly used method, for example, a hot rolling method, a cast multi-layer method, an explosive deposition method or the like can be used.

【0014】[0014]

【実施例】次に、本発明の実施例を以下に示す。 実施例1 表1および表2に示す化学成分を有する芯材および皮材
用の各合金について、常法により、溶解、鋳造し、得ら
れた鋳塊を面削、均質化処理を施した後、芯材用合金は
板厚45mmに、皮材用合金は板厚2.5mmにそれぞ
れ熱間圧延した。得られた芯材用合金板の両面に皮材用
合金板を重ね合わせ、熱間圧延によってクラッドした
後、冷間圧延および最終焼鈍を施すことによって板厚1
mm、クラッド率10%の本発明アルミニウム合金合わ
せ板および比較材の合わせ板を作成した。また、芯材用
合金板の一部は比較用として単独で熱間圧延、冷間圧延
および最終焼鈍を施すことによって板厚1mmのアルミ
ニウム合金板とした。表3および表4に、このようにし
て得られた各種合金の組み合わせによるアルミニウム合
金合わせ板および芯材のみの引張試験および曲げ試験の
結果を示す。表3および表4から明らかなように、本発
明による高強度アルミニウム合金合わせ板は、比較材の
合わせ板および芯材単独のものに比較して、成形性に優
れ、高強度も維持していることがわかる。
EXAMPLES Examples of the present invention will be described below. Example 1 Each alloy for core material and skin material having the chemical composition shown in Table 1 and Table 2 was melted and cast by a conventional method, and the obtained ingot was subjected to chamfering and homogenization treatment. The alloy for core material was hot-rolled to a plate thickness of 45 mm, and the alloy for skin material was hot-rolled to a plate thickness of 2.5 mm. The alloy sheet for skin material is superposed on both surfaces of the obtained alloy sheet for core material, clad by hot rolling, and then cold rolled and finally annealed to obtain a sheet thickness 1
An aluminum alloy laminated plate of the present invention having a mm and a clad ratio of 10% and a laminated plate of a comparative material were prepared. Further, a part of the alloy sheet for core material was independently subjected to hot rolling, cold rolling and final annealing to obtain an aluminum alloy sheet having a sheet thickness of 1 mm. Tables 3 and 4 show the results of the tensile test and the bending test of the aluminum alloy laminated plate and the core material alone, which are obtained by combining the various alloys thus obtained. As is apparent from Tables 3 and 4, the high-strength aluminum alloy laminated sheet according to the present invention has excellent formability and maintains high strength as compared with the laminated sheet of the comparative material and the core sheet alone. I understand.

【0015】[0015]

【表1】 [Table 1]

【0016】[0016]

【表2】 [Table 2]

【0017】[0017]

【表3】 [Table 3]

【0018】[0018]

【表4】 [Table 4]

【0019】実施例2 表1および表2に示す合金のうち合金No.I−4と0
−2について常法により、溶解、鋳造し、得られた鋳塊
を面削、均質化処理を施した後、芯材用合金のNo.I
−4は板厚40mmに、皮材用合金のNo.0−2は板
厚2〜5mmにそれぞれ熱間圧延した。得られた芯材用
合金板の片面あるいは両面に皮材用合金板を重ね合わ
せ、熱間圧延によってクラッドした後、冷間圧延および
最終焼鈍を施すことによって板厚1mmの本発明アルミ
ニウム合金合わせ板および比較材の合わせ板を作成し
た。表5にクラッド率と引張試験および曲げ試験の結果
の関係を示す。
Example 2 Of the alloys shown in Table 1 and Table 2, alloy No. I-4 and 0
No. 2 of the alloy for core material was melted and cast for the sample No.-2 by a conventional method, and the obtained ingot was faced and homogenized. I
-4 has a plate thickness of 40 mm and is No. 4 of the alloy for skin material. 0-2 was hot rolled to a plate thickness of 2 to 5 mm. The alloy sheet for skin material is superposed on one side or both sides of the obtained alloy sheet for core material, clad by hot rolling, and then cold rolled and finally annealed to give an aluminum alloy laminated sheet of the present invention having a thickness of 1 mm. And the laminated board of the comparative material was created. Table 5 shows the relationship between the clad ratio and the results of the tensile test and the bending test.

【0020】表5から明らかなように、クラッド率が3
%未満では強度の低下はほとんどないが、局部伸びが小
さく、曲げ性に劣る。また、クラッド率が20%を越え
ると局部伸びおよび曲げ性は向上するが、強度の低下が
著しい。このように、本発明の範囲である3〜20%の
クラッド率の時に強度と成形性が両立されることがわか
る。
As is clear from Table 5, the cladding rate is 3
If it is less than%, the strength is hardly reduced, but the local elongation is small and the bendability is poor. When the clad rate exceeds 20%, the local elongation and bendability are improved, but the strength is remarkably reduced. As described above, it can be seen that the strength and the formability are compatible with each other when the cladding rate is 3 to 20% which is the range of the present invention.

【0021】[0021]

【表5】 [Table 5]

【0022】実施例3 表1に示す合金No.I−1,I−4,I−15および
I−20について常法により、溶解、鋳造し、得られた
鋳塊を面削、均質化処理を施した後、熱間圧延試験を行
った。表6に圧延試験結果を示す。表6から明らかなよ
うに、Mg含有量とともに熱間圧延性は低下し、10%
未満では熱延可能であるが、10%を越えると割れが生
じ、芯材用の素材が製造できないことがわかる。
Example 3 Alloy No. shown in Table 1 I-1, I-4, I-15, and I-20 were melted and cast by an ordinary method, and the obtained ingot was subjected to chamfering and homogenization treatment, and then subjected to a hot rolling test. Table 6 shows the rolling test results. As is clear from Table 6, the hot rolling property decreases with the Mg content,
If less than 10%, hot rolling is possible, but if more than 10%, cracking occurs, and it is understood that a core material cannot be manufactured.

【0023】[0023]

【表6】 [Table 6]

【0024】実施例4 表1および表2に示す合金のうち合金No.I−4,0
−4,0−10および0−11について常法により、溶
解、鋳造し、得られた鋳塊を面削、均質化処理を施した
後、芯材用合金は板厚40mmに、皮材用合金は板厚
2.5mmにそれぞれ熱間圧延した。得られた芯材用合
金板の両面に皮材用合金板を重ね合わせ、熱間圧延によ
ってクラッドした後、冷間圧延および最終焼鈍を施すこ
とによって板厚1mm、クラッド率10%の本発明アル
ミニウム合金合わせ板および比較材の合わせ板を作成し
た。表7に、このようにして得られたアルミニウム合金
合わせ板の表面硬さ試験結果およびカップ成形による傷
つき程度を示す。表7から明らかなように、本発明材
は、比較材(Mg含有量が0.5%未満)より表面硬さ
が高く、傷の問題がないことがわかる。
Example 4 Of the alloys shown in Table 1 and Table 2, alloy No. I-4,0
-4, 0-10 and 0-11 were melted and cast by an ordinary method, and the obtained ingot was subjected to chamfering and homogenization treatment. The alloys were each hot rolled to a plate thickness of 2.5 mm. The alloy sheet for skin material is superposed on both sides of the obtained alloy sheet for core material, clad by hot rolling, and then cold rolled and finally annealed to give a plate thickness of 1 mm and a clad ratio of 10% of the present invention. Alloy plywood and comparative plywood were made. Table 7 shows the surface hardness test results of the aluminum alloy laminated plate thus obtained and the degree of scratching due to cup molding. As is clear from Table 7, the material of the present invention has a higher surface hardness than the comparative material (Mg content is less than 0.5%) and has no problem of scratches.

【0025】[0025]

【表7】 [Table 7]

【0026】[0026]

【発明の効果】以上の説明のように、本発明による高強
度アルミニウム合金合わせ板は成形加工時あるいは取扱
い時に傷がつきにくくて、n値が高く、局部伸びが大き
く、かつ高強度を有することから、自動車のボディパネ
ルをはじめ、電気機器、建築用等の成形加工用アルミニ
ウム合金板として傷つきの心配もなく、広く使用できる
ものである。
As described above, the high-strength aluminum alloy laminated sheet according to the present invention is not easily scratched during forming or handling, has a high n value, has a large local elongation, and has high strength. Therefore, it can be widely used as an aluminum alloy plate for forming process such as automobile body panel, electric equipment, construction, etc. without fear of being scratched.

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成5年11月9日[Submission date] November 9, 1993

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0024[Name of item to be corrected] 0024

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0024】実施例4 表1および表2に示す合金のうち合金No.I−4,0
−4,0−10および0ー11について常法により、溶
解、鋳造し、得られた鋳塊を面削、均質化処理を施した
後、芯材用合金は板厚40mmに、皮材用合金は板厚
2.5mmにそれぞれ熱間圧延した。得られた芯材用合
金板の両面に皮材用合金板を重ね合わせ、熱間圧延によ
ってクラッドした後、冷間圧延および最終焼鈍を施すこ
とによって板厚1mm、クラッド率10%の本発明アル
ミニウム合金合わせ板および比較材の合わせ板を作成し
た。表7に、このようにして得られたアルミニウム合金
合わせ板の表面硬さ試験結果およびカップ成形による傷
つき程度を示す。なお、カップ成形による傷つき程度
は、◎:傷つきなし、○:傷つき微少、×:傷つき多、
で表した。表7から明らかなように、本発明材は、比較
材(Mg含有量が0.5%未満)より表面硬さが高く、
傷の問題がないことがわかる。
Example 4 Of the alloys shown in Table 1 and Table 2, alloy No. I-4,0
-4, 0-10 and 0-11 were melted and cast by an ordinary method, and the obtained ingot was subjected to chamfering and homogenization treatment. The alloys were each hot rolled to a plate thickness of 2.5 mm. The alloy sheet for skin material is superposed on both sides of the obtained alloy sheet for core material, clad by hot rolling, and then cold rolled and finally annealed to give a plate thickness of 1 mm and a clad ratio of 10% of the present invention. Alloy plywood and comparative plywood were made. Table 7 shows the surface hardness test results of the aluminum alloy laminated plate thus obtained and the degree of scratching due to cup molding. The degree of scratches caused by cup molding
Is ◎: no scratches, ○: slight scratches, ×: many scratches,
Expressed as As is clear from Table 7, the material of the present invention has a higher surface hardness than the comparative material (Mg content is less than 0.5%),
You can see that there are no scratch problems.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 重量%で、Mg3.5〜10%を含有
し、残部がAlおよび単独で0.1%以下の不純物から
なるアルミニウム合金を芯材とし、Mg0.8〜2.0
%を含有し、残部がAlおよび単独で0.1%以下の不
純物からなるアルミニウム合金を皮材とし、かつ、皮材
の厚さは片面について全板厚の3〜20%とし、芯材の
片面あるいは両面にクラッドしたことを特徴とする成形
加工性に優れた高強度アルミニウム合金合わせ板。
1. A core material is an aluminum alloy containing 3.5 to 10% by weight of Mg, the balance being Al and an impurity of 0.1% or less alone.
%, The balance being Al and an aluminum alloy consisting of 0.1% or less of impurities alone, as a skin material, and the thickness of the skin material is 3 to 20% of the total plate thickness on one side. A high-strength aluminum alloy laminated plate with excellent moldability, characterized by being clad on one or both sides.
【請求項2】 芯材のアルミニウム合金に、 Cu:0.03〜1.5% Zn:0.03〜1.5% Mn:0.03〜0.8% Cr:0.03〜0.5% Zr:0.03〜0.3% V :0.03〜0.3% Fe:0.05〜0.5% Si:0.05〜0.5% Ti:0.005〜0.3% のうちの1種または2種以上を含有する請求項1記載の
アルミニウム合金合わせ板。
2. An aluminum alloy as a core material comprising: Cu: 0.03 to 1.5% Zn: 0.03 to 1.5% Mn: 0.03 to 0.8% Cr: 0.03 to 0. 5% Zr: 0.03 to 0.3% V: 0.03 to 0.3% Fe: 0.05 to 0.5% Si: 0.05 to 0.5% Ti: 0.005 to 0. The aluminum alloy laminated plate according to claim 1, containing one or more of 3%.
【請求項3】 皮材のアルミニウム合金に、 Cu:0.5%以下 Zn:0.5%以下 Mn:0.8%以下 Cr:0.5%以下 Zr:0.3%以下 V :0.3%以下 Fe:0.5%以下 Si:0.5%以下 Ti:0.3%以下 のうちの1種または2種以上を含有する請求項1記載の
アルミニウム合金合わせ板。
3. An aluminum alloy as a skin material, Cu: 0.5% or less Zn: 0.5% or less Mn: 0.8% or less Cr: 0.5% or less Zr: 0.3% or less V: 0 0.3% or less Fe: 0.5% or less Si: 0.5% or less Ti: 0.3% or less The aluminum alloy laminated sheet according to claim 1, containing one or more of the following.
【請求項4】 芯材のアルミニウム合金に、 Cu:0.03〜1.5% Zn:0.03〜1.5% Mn:0.03〜0.8% Cr:0.03〜0.5% Zr:0.03〜0.3% V :0.03〜0.3% Fe:0.05〜0.5% Si:0.05〜0.5% Ti:0.005〜0.3% のうちの1種または2種以上を含有する請求項3記載の
アルミニウム合金合わせ板。
4. An aluminum alloy as a core material comprising: Cu: 0.03 to 1.5% Zn: 0.03 to 1.5% Mn: 0.03 to 0.8% Cr: 0.03 to 0. 5% Zr: 0.03 to 0.3% V: 0.03 to 0.3% Fe: 0.05 to 0.5% Si: 0.05 to 0.5% Ti: 0.005 to 0. The aluminum alloy laminated plate according to claim 3, which contains one or more of 3%.
JP1609493A 1993-02-03 1993-02-03 High strength aluminum alloy clad excellent in formability Withdrawn JPH06228690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1609493A JPH06228690A (en) 1993-02-03 1993-02-03 High strength aluminum alloy clad excellent in formability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1609493A JPH06228690A (en) 1993-02-03 1993-02-03 High strength aluminum alloy clad excellent in formability

Publications (1)

Publication Number Publication Date
JPH06228690A true JPH06228690A (en) 1994-08-16

Family

ID=11906933

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPH06228690A (en)

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US20120288732A1 (en) * 2006-05-02 2012-11-15 Aleris Aluminum Duffel Bvba Aluminium Composite Sheet Material
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US7968211B2 (en) * 2006-05-02 2011-06-28 Aleris Aluminum Duffel Bvba Aluminium composite sheet material
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US7820304B2 (en) * 2008-01-22 2010-10-26 All-Clad Metalcrafters Llc Corrosion/abrasion-resistant composite cookware
EP2302086A1 (en) * 2009-09-15 2011-03-30 Hydro Aluminium Deutschland GmbH Corrosion-resistant clad aluminium sheet for a vehicle bodywork
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