JPS6356393A - Aluminum alloy filler metal - Google Patents
Aluminum alloy filler metalInfo
- Publication number
- JPS6356393A JPS6356393A JP20110786A JP20110786A JPS6356393A JP S6356393 A JPS6356393 A JP S6356393A JP 20110786 A JP20110786 A JP 20110786A JP 20110786 A JP20110786 A JP 20110786A JP S6356393 A JPS6356393 A JP S6356393A
- Authority
- JP
- Japan
- Prior art keywords
- filler metal
- aluminum alloy
- weld
- content
- crack
- 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.)
- Granted
Links
- 239000000945 filler Substances 0.000 title claims abstract description 29
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 title abstract description 25
- 239000002184 metal Substances 0.000 title abstract description 25
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 19
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 abstract description 13
- 239000011324 bead Substances 0.000 abstract description 12
- 239000010953 base metal Substances 0.000 abstract description 5
- 229910052726 zirconium Inorganic materials 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 12
- 238000003466 welding Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 150000002739 metals Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- -1 A3356 Chemical class 0.000 description 1
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 235000000935 Santalum yasi Nutrition 0.000 description 1
- 241000775525 Santalum yasi Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は溶接に用いられるアルミニウム合金溶加材、
特にＣｕ含有アルミニウム合金材料の溶接に用いられる
溶加材に関する。[Detailed Description of the Invention] Industrial Application Field This invention relates to an aluminum alloy filler material used in welding,
In particular, it relates to filler metals used for welding Cu-containing aluminum alloy materials.
従来の技術及び問題点
アルミニウム合金材料の強度向上には一般にＣｕの添加
が有効であることから、例えば２０００系等のＣｕ含有
アルミニウム合金材料が構造用材料として広く利用され
ている。しがしながらこのようなＣｕ含有アルミニウム
合金材料は、既存の溶加材を用いて溶接を施した場合、
後述する一部の合金を除いて以下の理由により溶接割れ
を生ずることから、溶接構造用材料として用いることが
できなかった。すなわち、ＡΩ−Ｃｕ２元系合金の溶接
割れ感受性は、第２図の溶接割れ試験結果に示されるよ
うに、ｃｕ：０．３ｗｔ％〜５ｗｔ％の含有範囲で敏感
であり、この傾向はＳｉ、Ｍｇ、Ｚｎ等の他の添加元素
が含まれる場合にも変わらないことが知られている。一
方既存の溶加材、例えばＡ３３５６、Ａ３５５６、Ａ５
１８３フルミニラム合金ヤｓｉ：４，５〜Ｂ、Ｏｙｔ％
を含有したＡ４０４３アルミニウム合金等からなる溶加
材を用いてＣｕ含有アルミニウム合金材料を溶接した場
合、溶接ビードの組成（溶接により母材と溶加材組成が
希釈されるのでビード組成は概ね（母材組成＋溶加材組
成）／２となる）におけるＣｕｆｆｉがほとんどの場合
上記の溶接割れ感受性の敏感な範囲となり、この結果溶
接部に割れが生じたり、溶加材の種類によっては溶接部
が強度不足となることとも相俟ってＣｕ含有アルミニウ
ム合金を溶接構造材として用いることは不可能であった
。もっとも、Ｃｕを５ｗｔ％程度以上含有するようなア
ルミニウム合金、例えばＣｕ：５゜８〜６．８ｗｔ％を
含有するＡ２２１９アルミニウム合金等については、同
じ＜Ｃｕ：５．８〜Ｂ、８ｗｔ％を含有する共金糸Ａ２
３１９アルミニウム合金を溶加材として使用することに
より、溶接ビードのＣｕ含有量を５ｗｔよりも大にする
ことができることから、溶接構造材としての使用が一部
でなされている。しかしながらＣｕ含有量が５ｗｔ％程
度以下であるようなアルミニウム合金については、上記
のようなＡ２３１９合金を溶加材として用いたとしても
溶接割れを生ずることとなり、依然溶接構造用材料とし
ての使用は不可能であった。Prior Art and Problems Since the addition of Cu is generally effective in improving the strength of aluminum alloy materials, Cu-containing aluminum alloy materials such as 2000 series are widely used as structural materials. However, when such Cu-containing aluminum alloy materials are welded using existing filler metals,
Except for some alloys described below, they could not be used as materials for welded structures because they caused weld cracking for the following reasons. That is, as shown in the weld cracking test results in Fig. 2, the weld cracking susceptibility of the AΩ-Cu binary alloy is sensitive in the Cu content range of 0.3 wt% to 5 wt%, and this tendency is It is known that this does not change even when other additive elements such as Mg and Zn are included. On the other hand, existing filler metals such as A3356, A3556, A5
183 Full Mini Ram Alloy Yasi: 4,5~B, Oyt%
When welding a Cu-containing aluminum alloy material using a filler metal such as A4043 aluminum alloy containing Cuffi (material composition + filler metal composition)/2) is in the sensitive range of weld cracking susceptibility mentioned above in most cases, and as a result, cracks may occur in the weld, or depending on the type of filler metal, the weld may be damaged. Coupled with the lack of strength, it has been impossible to use Cu-containing aluminum alloys as welded structural materials. However, for aluminum alloys containing about 5 wt% or more of Cu, such as A2219 aluminum alloy containing Cu: 5°8 to 6.8 wt%, the same <Cu: 5.8 to B, containing 8 wt% Same gold thread A2
By using 319 aluminum alloy as a filler metal, the Cu content of the weld bead can be increased to more than 5 wt, so it is used in some parts as a welded structural material. However, for aluminum alloys with a Cu content of about 5 wt% or less, weld cracking will occur even if the A2319 alloy mentioned above is used as a filler metal, and its use as a material for welded structures is still prohibited. It was possible.
この発明はかかる背景に鑑みてなされたものであって、
Ｃｕ含有量が５ｗｔ％程度以下であるようなアルミニウ
ム合金材料に対してもその溶接割れ感受性を改善し、該
材料の溶接構造用材料としての使用を可能とするアルミ
ニウム合金溶加材の提供を目的とするものである。This invention was made in view of this background,
The purpose of the present invention is to provide an aluminum alloy filler material that improves the weld cracking susceptibility of aluminum alloy materials with a Cu content of approximately 5 wt% or less, and that enables the material to be used as a material for welded structures. That is.
問題点を解決するための手段
而してこの発明は、Ｃｕ：７〜１５ｗｔ％を含有し、必
要に応じてＭｎ ： ０． ０５〜１． ５ｗｔ％、Ｃ
ｒ ： ０． ０１〜０． ５ｗｔ％の少なくとも一方
及び／またはＺ ｒ ： ０． ０１〜１． ０ｗｔ％
、Ｔ ｉ ： Ｏ，ＯＯ５〜０． ２ｗｔ％、Ｂ：０．
００１〜０．０１ｗｔ％の一種または２種以上を含有し
、残部がアルミニウム及び不可避不純物からなることを
特徴とするアルミニウム合金溶加材を要旨とするもので
ある。Means for Solving the Problems According to the present invention, Cu: 7 to 15 wt% is contained, and Mn: 0. 05-1. 5wt%, C
r: 0. 01~0. At least one of 5 wt% and/or Z r : 0. 01-1. 0wt%
, T i : O, OO5~0. 2wt%, B: 0.
001 to 0.01 wt% of one or more types, and the remainder consists of aluminum and unavoidable impurities.
溶加材中の必須成分としてのＣｕは溶接ビードの組成に
おけるＣｕ含有量を溶接割れ感受性の敏感な０． ３〜
５ｗｔ％の範囲外となすために必要なものである。前述
のように、ビード組成は概ね（母材組成＋溶加材組成）
／２となるから、母材となるアルミニウム合金材料のＣ
ｕ量が０．６ｗｔ％以上の場合にはビードのＣｕ量を０
．３ｗｔ％未満に抑制するのは不可能である。Cu as an essential component in the filler metal reduces the Cu content in the weld bead composition to 0.5%, which is sensitive to weld cracking. 3~
This is necessary to keep the content outside the range of 5wt%. As mentioned above, the bead composition is approximately (base metal composition + filler metal composition)
/2, so the C of the aluminum alloy material that is the base material
If the u content is 0.6wt% or more, the bead Cu content is 0.
．． It is impossible to suppress it to less than 3 wt%.
このためビードのＣｕ量を５ｗｔ％より大にする必要が
あるが、ビードのＣｕ量が５ｗｔ％前後では溶接割れ感
受性に不安定性を残すことから、６ｗｔ％以上にするの
が望ましい。母材のＣｕ含有量が５ｗｔ％の場合ビード
のＣｕＭを６ｗｔ％とするには溶加材のＣｕｉが７ｗｔ
％必要であり、かかる観点から溶加材におけるＣｕ含有
量の下限値を７ｗｔ％とした。一方溶加材中のＣｕ含有
量の上限値を１５ｗｔ％としたのは、１５ｗｔ％を越え
る場合には母材のＣｕ含有量の多少に拘らず溶接ビード
のＣｕ量が常に６ｗｔ％を超え無駄であるのみならず、
継手強度が低下し、また加工性も低下して溶加材自体の
製造が困難となるからである。For this reason, it is necessary to make the amount of Cu in the bead greater than 5 wt%, but if the amount of Cu in the bead is around 5 wt%, instability remains in the weld cracking susceptibility, so it is desirable to make it more than 6 wt%. When the Cu content of the base material is 5 wt%, the Cu of the filler metal must be 7 wt% to make the CuM of the bead 6 wt%.
%, and from this point of view, the lower limit of the Cu content in the filler material was set to 7 wt%. On the other hand, the upper limit of the Cu content in the filler metal was set at 15 wt%, because if it exceeds 15 wt%, the Cu amount in the weld bead will always exceed 6 wt%, which is wasteful, regardless of the Cu content of the base metal. Not only is it
This is because the joint strength decreases, and the workability also decreases, making it difficult to manufacture the filler metal itself.
溶加材には上記Ｃｕの外、必要に応じてＭｎ：０、 ０
５〜１． ５ｗｔ％、Ｃｒ：０．０１〜０゜５ｗｔ％の
いずれか一方または両方の含有が許容される。Ｍｎ、Ｃ
ｒはともに溶接部の耐食性及び強度向上に寄与するもの
である。しかしＭｎが０．０５ｗｔ％未満、Ｃｒが０．
０１ｗｔ％未満ではそれらの効果に乏しく、逆にＭｎが
１，５ｗｔ％を超えると粗大金属間化合物が晶出し靭性
を阻害する。またＣｒが０．５ｗｔ％を超えて含有され
ても靭性を阻害するものとなる。In addition to the above-mentioned Cu, filler metals include Mn: 0, 0 as necessary.
5-1. 5 wt%, Cr: 0.01 to 0.5 wt%, or both are allowed. Mn,C
Both r contribute to improving the corrosion resistance and strength of the welded part. However, Mn is less than 0.05 wt% and Cr is 0.05 wt%.
If the Mn content is less than 1.5 wt%, these effects will be poor, and if the Mn content exceeds 1.5 wt%, coarse intermetallic compounds will crystallize and inhibit toughness. Further, even if Cr is contained in an amount exceeding 0.5 wt%, toughness will be inhibited.
さらに溶加材には上記Ｍｎ、、Ｃｒの含有の有無と無関
係に、Ｚｒ：０．０１〜１．０ｗｔ％、Ｔ ｉ ： ０
． ＯＯ５〜０． ２ｗｔ％、Ｂ：０．００１〜０．
０１ｗｔ％の１種または２種以上の含有が許容される。Furthermore, the filler metal contains Zr: 0.01 to 1.0 wt%, Ti: 0, regardless of the presence or absence of the above-mentioned Mn and Cr.
．． OO5~0. 2wt%, B: 0.001-0.
01 wt% of one or more types is allowed.
Ｚｒ、Ｔｉ、Ｂはともに結晶粒を微細化し溶接割れ感受
性の改善に寄与するものである。しかしＺｒが０．０１
ｗｔ％未満、Ｔｉが０．００５ｗｔ％未満、Ｂが０．０
０１ｗｔ％未満の場合には該効果に乏しく、逆にＺｒが
１゜Ｏｖｔ％を超え、Ｔｉが０．２ｗｔ％を超えると靭
性を阻害し、またＢが０．０１ｗｔ％を超えると溶着す
る溶融金属の流動性を阻害するものとなる。Zr, Ti, and B all contribute to improving weld cracking sensitivity by refining crystal grains. However, Zr is 0.01
Less than wt%, Ti less than 0.005wt%, B 0.0
If Zr exceeds 1°Ovt% and Ti exceeds 0.2wt%, the toughness will be impaired, and if B exceeds 0.01wt%, the effect will be poor. This impedes the fluidity of the metal.
上記溶加材は、一般的にはＪＩＳＺ３２３２に規定する
径及び許容差の溶接棒及び電極ワイヤとして使用される
ものである。The above filler metal is generally used as welding rods and electrode wires with diameters and tolerances specified in JIS Z3232.
発明の効果
この発明に係るアルミニウム合金溶加材は上述のように
、Ｃｕを７〜１５ｗｔ％含有したものであることにより
、Ｃｕを５ｗｔ％を超えて含有するアルミニウム合金材
料の溶接は勿論のこと、特にＣｕ含有量が５ｗｔ％以下
であるようなアルミニウム合金材料の溶接に対しても、
溶接ビードの組成におけるＣｕ量を強制的に溶接割れ感
受性の敏感な範囲外とすることができる。この結果本溶
加材を用いることによりＣｕ含有アルミニウム合金材料
の溶接が可能となり、従って該材料の溶接構造材として
の使用が可能となり、該材料の使用範囲を格段に拡大し
うるものとなる。Effects of the Invention As mentioned above, the aluminum alloy filler material according to the present invention contains 7 to 15 wt% of Cu, so it can of course be used for welding aluminum alloy materials containing more than 5 wt% of Cu. , especially for welding aluminum alloy materials with a Cu content of 5 wt% or less.
It is possible to force the amount of Cu in the composition of the weld bead to be outside the sensitive range of weld cracking susceptibility. As a result, by using this filler metal, it becomes possible to weld Cu-containing aluminum alloy materials, and therefore, it becomes possible to use this material as a welded structural material, and the range of use of this material can be greatly expanded.
実施例 次にこの発明の詳細な説明する。Example Next, this invention will be explained in detail.
［以下余白］
−７＝
上記第１表に示す組成の直径１．６ｍｍの各種溶加材と
、第２表に示す組成の母材からなる試験片を用いてＭＩ
Ｇフィッシュボーン割れ試験を実施した。試験片（１）
は第１図に示すように、厚さ：６ｍｍ５長さくＬ）
： ２５０ｍｍ、幅（Ｗ） ： ２００ｍｍ、スリッ
ト（ｌａ）の間隔（Ｉｌ）： １０１１１１１１％
（Ｙ） ： １０ｍｍとした。なお（２）はタブ板で
ある。試験は下記の溶接条件で同図に矢印（Ｘ）で示す
方向にＭＩＧ溶接して溶接部（３）の割れ長さを測定し
、割れ率を求めたものである。[Left below] −7= MI using test pieces made of various filler metals with a diameter of 1.6 mm with the compositions shown in Table 1 above and base metals with the compositions shown in Table 2.
A G-fishbone cracking test was conducted. Test piece (1)
As shown in Figure 1, thickness: 6 mm, length L)
: 250mm, width (W): 200mm, slit (la) interval (Il): 10111111%
(Y): 10 mm. Note that (2) is a tab plate. In the test, MIG welding was performed in the direction shown by the arrow (X) in the figure under the following welding conditions, the crack length of the welded part (3) was measured, and the crack rate was determined.
溶接条件
電流：２２０Ａ
電圧：２８ｖ
溶接速度： ４０ｃｍ／ｍｉｎ
シールドガス流量：２５ρ／ ｍ ｉ ｎ試験はそれぞ
れ４回行った。それらの結果を第３表に示す。Welding conditions Current: 220A Voltage: 28v Welding speed: 40cm/min Shielding gas flow rate: 25ρ/min Each test was performed four times. The results are shown in Table 3.
［以下余白］
第３表
（注）
割れ率（％）＝ 割れ長８×１００
試験片長さく２５０ ）
上記結果から明らかなように、本発明に係る溶加材を用
いれば、Ｃｕを含有する母材の溶接割れが発生しにくい
ものであることを確認しえた。[Margin below] Table 3 (Note) Crack rate (%) = Crack length 8 x 100 Test piece length 250) As is clear from the above results, if the filler metal according to the present invention is used, the It was confirmed that weld cracking of the material is less likely to occur.
第１図は溶接割れ試験片の概略平面図、第２図は母材中
のＣｕの含有量と溶接割れ長さとの関係を示すグラフで
ある。
−ｌ〇 −
（１）・・・試験片、（１ａ）・・・スリット、（２）
・・・タブ板、（３）・・・溶接部。
以上
１ｌ−
Ｃｕ＠＄１（Ｗｔ’／、）
第２図FIG. 1 is a schematic plan view of a weld crack test piece, and FIG. 2 is a graph showing the relationship between the Cu content in the base metal and the weld crack length. -l〇 - (1)...Test piece, (1a)...Slit, (2)
...Tab plate, (3)...Welded part. Above 1l- Cu@$1 (Wt'/,) Figure 2
Claims (1)
．０５〜１．５ｗｔ％、Ｃｒ：０．０１〜０．５ｗｔ％
の少なくとも一方及び／またはＺｒ：０．０１〜１．０
ｗｔ％、Ｔｉ：０．００５〜０．２ｗｔ％、Ｂ：０．０
０１〜０．０１ｗｔ％の一種または２種以上を含有し、
残部がアルミニウム及び不可避不純物からなることを特
徴とするアルミニウム合金溶加材。Contains Cu: 7 to 15 wt%, Mn: 0 as necessary
．． 05-1.5wt%, Cr: 0.01-0.5wt%
and/or Zr: 0.01 to 1.0
wt%, Ti: 0.005 to 0.2 wt%, B: 0.0
01 to 0.01 wt% of one or more types,
An aluminum alloy filler material characterized in that the remainder consists of aluminum and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61201107A JP2509916B2 (en) | 1986-08-26 | 1986-08-26 | Aluminum alloy filler metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61201107A JP2509916B2 (en) | 1986-08-26 | 1986-08-26 | Aluminum alloy filler metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6356393A true JPS6356393A (en) | 1988-03-10 |
| JP2509916B2 JP2509916B2 (en) | 1996-06-26 |
Family
ID=16435519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61201107A Expired - Lifetime JP2509916B2 (en) | 1986-08-26 | 1986-08-26 | Aluminum alloy filler metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2509916B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012041565A (en) * | 2010-08-12 | 2012-03-01 | Kobe Steel Ltd | Aluminum welded structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5462941A (en) * | 1977-10-14 | 1979-05-21 | Honda Motor Co Ltd | Welding bar for innert gas arc welding of aluminium alloy |
-
1986
- 1986-08-26 JP JP61201107A patent/JP2509916B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5462941A (en) * | 1977-10-14 | 1979-05-21 | Honda Motor Co Ltd | Welding bar for innert gas arc welding of aluminium alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012041565A (en) * | 2010-08-12 | 2012-03-01 | Kobe Steel Ltd | Aluminum welded structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2509916B2 (en) | 1996-06-26 |
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