JPH03122248A - High strength aluminum alloy for welding excellent in stress corrosion cracking resistance - Google Patents
High strength aluminum alloy for welding excellent in stress corrosion cracking resistanceInfo
- Publication number
- JPH03122248A JPH03122248A JP26185589A JP26185589A JPH03122248A JP H03122248 A JPH03122248 A JP H03122248A JP 26185589 A JP26185589 A JP 26185589A JP 26185589 A JP26185589 A JP 26185589A JP H03122248 A JPH03122248 A JP H03122248A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- stress corrosion
- corrosion cracking
- strength
- cracking resistance
- 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.)
- Pending
Links
- 238000005336 cracking Methods 0.000 title claims abstract description 25
- 230000007797 corrosion Effects 0.000 title claims abstract description 22
- 238000005260 corrosion Methods 0.000 title claims abstract description 22
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 20
- 238000003466 welding Methods 0.000 title claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 20
- 239000000956 alloy Substances 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 13
- 229910052796 boron Inorganic materials 0.000 abstract description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 229910052726 zirconium Inorganic materials 0.000 abstract description 3
- 229910018571 Al—Zn—Mg Inorganic materials 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 18
- 238000012360 testing method Methods 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 7
- 238000005242 forging Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010998 test method Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229910019086 Mg-Cu Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910009369 Zn Mg Inorganic materials 0.000 description 1
- 229910007573 Zn-Mg Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Conductive Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、圧延材、押出材、！２造材として溶接構造材
に用いられる高力アルミニウム合金に関し。[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to rolled materials, extruded materials, and! 2 Regarding high-strength aluminum alloys used as welded structural materials.
さらに詳しくは、耐応力腐食割れ性に優れた溶接用Ａｌ
−Ｚｎ−Ｍｇ系高力アルミニウム合金に関する。For more details, see Aluminum for welding with excellent stress corrosion cracking resistance.
-Relating to a Zn-Mg-based high-strength aluminum alloy.
（従来の技術とその課題） 近年、建築、車両、船舶、航空機等においては。(Conventional technology and its issues) In recent years, in architecture, vehicles, ships, aircraft, etc.
益々薄肉軽量化が進み、溶接可能な高力アルミニウム合
金の要求が高まって来ている。従来、これらの用途に対
するアルミニウム合金としては、Ａ１−Ｚｎ−Ｍｇ系合
金やＡＩ −Ｚｎ−Ｍｇ−Ｃｕ合金が考えられてきた。As aluminum alloys become thinner and lighter, the demand for weldable high-strength aluminum alloys is increasing. Conventionally, Al-Zn-Mg alloys and AI-Zn-Mg-Cu alloys have been considered as aluminum alloys for these uses.
この種の高力アルミニウム合金は、Ｚｎ、Ｍｇ量を増加
するに従って高強度になるが、それに伴って応力腐食れ
感受性や溶接割れ感受性が高くなる傾向があり、又、圧
延押出、鍛造等の熱間加工性も劣化してくる。This type of high-strength aluminum alloy becomes high in strength as the Zn and Mg contents increase, but there is a tendency for stress corrosion susceptibility and weld cracking susceptibility to increase accordingly, and heat treatment such as rolling extrusion and forging Machinability also deteriorates.
圧延、押出、鍛造等の成形が可能で、構造材に用いられ
る高力アルミニウム合金として代表的なものにＡ７０７
５合金がある。該合金の強度はアルミニウム合金の中で
も最高に属するが、Ｃｕを含むため溶接性が著しく劣り
、接合はボルト締め。A707 is a typical high-strength aluminum alloy used for structural materials, and can be formed by rolling, extrusion, forging, etc.
There are 5 alloys. The strength of this alloy is among the highest among aluminum alloys, but because it contains Cu, weldability is extremely poor, and joints are bolted.
リベット等の機械的接合によらなければならない。Must be mechanically joined by rivets, etc.
また、該合金は応力腐食割れ感受性が高いため従来は本
来最高強度が得られる熱処理であるＴ６処理では、応力
腐食割れが起こる危険があるため。In addition, since this alloy is highly susceptible to stress corrosion cracking, there is a risk that stress corrosion cracking will occur in T6 treatment, which is the heat treatment that originally provides the highest strength.
それよりさらに高い温度又は長い時間の焼き戻しを行い
組織を安定化させたＴ７処理で使用することが多い。It is often used in T7 treatment, which stabilizes the structure by tempering at a higher temperature or for a longer time.
７０００系アルミニウム合金の中で、圧延、押出、鍛造
等の成形が可能で、しかも溶接性、耐応力腐食割れ性に
優れたアルミニウム合金としてはＡ７Ｎ０１が良く知ら
れている。また、押出性の良好なＡ７００３も溶接性、
耐応力腐食割れ性に優れたアルミニウム合金である。し
かしながらこれらの合金では強度が比較的低いため、更
に強度を要する用途には適さなかった。上記のごと〈従
来の技術では強度、耐応力腐食割れ性、溶接性の全ての
面で満足が得られ、しかも押出、圧延、鍛造等の成形性
にも優れたアルミニウム合金を得ることは甚だ困難であ
った。Among the 7000 series aluminum alloys, A7N01 is well known as an aluminum alloy that can be formed by rolling, extrusion, forging, etc., and has excellent weldability and stress corrosion cracking resistance. In addition, A7003 with good extrudability also has good weldability.
An aluminum alloy with excellent stress corrosion cracking resistance. However, these alloys have relatively low strength and are therefore unsuitable for applications requiring higher strength. As mentioned above, it is extremely difficult to obtain an aluminum alloy that satisfies all aspects of strength, stress corrosion cracking resistance, and weldability using conventional techniques, and also has excellent formability through extrusion, rolling, forging, etc. Met.
（発明が解決しようとする課Ｂ） 本発明は、従来の技術では解決できなかった。(Problem B that the invention attempts to solve) The present invention cannot be solved using conventional techniques.
強度、耐応力腐食割れ性、溶接性の全ての面で満足が得
られ、しかも、押出、圧延、鍛造等の成形性にも優れた
材料を提供することを目的とするものである。The purpose is to provide a material that is satisfactory in all aspects of strength, stress corrosion cracking resistance, and weldability, and that is also excellent in formability by extrusion, rolling, forging, etc.
（問題点を解決するための手段）
本発明者らは、前述の様な事情に着目し、上記したごと
き５強度、耐応力腐食割れ性、溶接性の全ての面で満足
が得られ、しかも、押出、圧延。(Means for Solving the Problems) The present inventors focused on the above-mentioned circumstances, and found that all of the above-mentioned five aspects of strength, stress corrosion cracking resistance, and weldability were satisfied, and that , extrusion, rolling.
鍛造等の成形性にも優れたアルミニウム合金の開発を期
して１合金成分の種類、含有率を変えて。In order to develop an aluminum alloy with excellent formability during forging, etc., we changed the type and content of one alloy component.
種々検討した。その結果、下記のごとく合金成分の種類
、含有率を特定してやれば上記の目的を達成できること
を見出し９本発明の完成をみた。Various considerations were made. As a result, it was discovered that the above object could be achieved by specifying the type and content of the alloy components as described below, and the present invention was completed.
即ち１本発明に係る耐応力腐食割れに優れる溶接用高力
アルミニウム合金の構成とは、Ｚｎ４〜７重景％、Ｍｇ
０．３〜３．０重量％、Ａｇ０．０３〜１．０重量％、
Ｆｅ０．０１〜１重量％、 Ｔｉ０．００５〜０．２
重量％を含有し、かつ、Ｍｎ０．０１〜１．５重量％、
’ Ｃｒ ０．０１〜０．６重量％、 Ｚ ｒ ０
．０１〜０．２５重量％、 Ｂ０．０ＯＯ１〜０．０
８重量％のうちの少なくとも１種または２種以上を含み
、残りアルミニウム及び不可避不純物からなるところが
要旨である。That is, 1. The composition of the high-strength aluminum alloy for welding which is excellent in stress corrosion cracking resistance according to the present invention is as follows: 4-7% Zn, Mg
0.3-3.0% by weight, Ag0.03-1.0% by weight,
Fe0.01-1% by weight, Ti0.005-0.2
% by weight, and 0.01 to 1.5% by weight of Mn,
' Cr 0.01-0.6% by weight, Z r 0
．． 01-0.25% by weight, B0.0OO1-0.0
The gist is that it contains at least one or two or more of 8% by weight, and the remainder consists of aluminum and unavoidable impurities.
（作用）
本発明に係る上記アルミニウム合金の成分の種類と含有
率の限定理由について説明すると次のとおりである。(Function) The reasons for limiting the types and contents of the components of the aluminum alloy according to the present invention are as follows.
Ｚｎは、硬化要素として合金の強度の増大のために不可
欠の元素であり、含有量が４重量％未満ではその効果が
少なく、７重量％を越えると耐応力腐食割れ性、溶接性
、加工性が劣化する。Ｚｎの最も好ましい含有量は４〜
７重量％である。Zn is an essential element for increasing the strength of alloys as a hardening element, and if the content is less than 4% by weight, its effect will be small, and if it exceeds 7% by weight, stress corrosion cracking resistance, weldability, and workability will be reduced. deteriorates. The most preferable content of Zn is 4~
It is 7% by weight.
Ｍｇは、これもＺｎと同様に強度向上に不可欠な元素で
あり、含有量が０．３重量％未満では充分な強度が得ら
れず、３．０重量％を越えて含有されると耐応力腐食割
れ性、溶接性、加工性が劣化する。よって、Ｍｇの最も
好ましい含有量は０．３〜３．０重量％である。Mg, like Zn, is an element essential for improving strength; if the content is less than 0.3% by weight, sufficient strength cannot be obtained, and if the content exceeds 3.0% by weight, the stress resistance will be reduced. Corrosion cracking, weldability, and workability deteriorate. Therefore, the most preferable Mg content is 0.3 to 3.0% by weight.
Ａｇは、耐応力腐食割れ性及び強度を向上させる元素で
あり、含有量が０．０３重重景未満ではその効果が少な
く、１．０重量％を越えて含有させると溶接性が劣化す
る。よって、Ａｇの最も好ましい含有量は０．０３〜１
．０重量％である。Ag is an element that improves stress corrosion cracking resistance and strength. If the content is less than 0.03% by weight, the effect will be small, and if the content is more than 1.0% by weight, weldability will deteriorate. Therefore, the most preferable content of Ag is 0.03 to 1
．． It is 0% by weight.
Ｆｅは、溶接性を向上させる元素であり、含有量が０．
０１重量％未満ではその与効果が少なく。Fe is an element that improves weldability, and the content is 0.
If it is less than 0.01% by weight, its effect will be small.
１．０重量％を越えて含有させると靭性、加工性が劣化
する。よって、Ｆｅの最も好ましい含有量は０．０１〜
１．０重量％である。If the content exceeds 1.0% by weight, toughness and workability will deteriorate. Therefore, the most preferable content of Fe is 0.01~
It is 1.0% by weight.
Ｔｉは２組織を微細化し、溶接性を向上させる元素であ
るが、含有量が０．ｏｏｓ重世％未満ではその咎効果が
少なく、０．２重量％を越えて含有させると巨大化合物
が発生し靭性、加工性が劣化する危険性がある。よって
、Ｔｉの最も好ましい含有量は０．００５〜０．２重量
％である。Ti is an element that refines the 2-structure and improves weldability, but when the content is 0. If the content is less than 0.00% by weight, the reducing effect will be small, and if the content exceeds 0.2% by weight, there is a risk that giant compounds will be generated and the toughness and workability will deteriorate. Therefore, the most preferable content of Ti is 0.005 to 0.2% by weight.
Ｍｎ、Ｃｒ、Ｚｒ、Ｂは、それぞれ組織安定化のために
含有させる元素であり、１ｆｆｆｌまたは２種以上添加
するものであるが、含有量がＭ ｎ ０．０１重量％未
満、Ｃｒ０．０１重量％未満、Ｚｒ０．０１重量％未満
、 Ｂ０．０ＯＯ１重量％未満では結晶粒微細化の効果
が少なくなり、また、Ｍｎ３．０重量％、Ｃｒ００６重
量％、Ｚｒ０．２５重量％、 ８０．０８重四％を越
えて含有されると巨大化合物が発生し、靭性、加工性を
劣化させる危険がある。Mn, Cr, Zr, and B are elements to be included for structure stabilization, and 1fffl or two or more of them are added, but the content is less than 0.01% by weight for Mn and 0.01% by weight for Cr. %, less than 0.01% by weight of Zr, less than 1% by weight of B0.0OO, the effect of grain refinement will be reduced; If the content exceeds 1%, a giant compound will be generated and there is a risk of deteriorating toughness and workability.
尚本発明合金において、Ｃｕ、Ｓｉ、Ｎｉは。In the alloy of the present invention, Cu, Si, and Ni are.
不純物として、Ｃｕ０．０３３重丸未満、Ｓｉ０．２重
量％未満、Ｎｉ０．０３重量％未満に制限することが必
要である。それぞれ制限値を越えて含有されると溶接性
を低下させる。It is necessary to limit the impurities to less than 0.033% Cu, less than 0.2% by weight of Si, and less than 0.03% by weight of Ni. If each content exceeds the limit value, weldability will be deteriorated.
（実施例） 以下に本発明の一実施例について説明する。(Example) An embodiment of the present invention will be described below.
第１表に示す本発明合金、比較材、及び従来合金の組成
の合金を半連続水冷鋳造装置を用いて押出用鋳塊（９イ
ンチ径）に鋳造した。この９インチ径の棒状鋳塊を４７
０°Ｃで１２時間均質化処理した後、４３０’Ｃに加熱
して押出機によって、それぞれ厚さ５ｍｍ、幅１００ｍ
ｍの平角材に押出した。押出加工するに際して、前記平
角材が表面欠陥や割れ発生が無く押出し得る最高押出速
度をもって、各合金の押出性の良否を評価した。その結
果を第２表に示す、各々の材料は押出後、４６０°Ｃで
１時間の溶体化処理後焼入し、１２０°Ｃで２４時間の
焼戻し処理を行った。Alloys having the compositions of the present alloy, comparative material, and conventional alloy shown in Table 1 were cast into extrusion ingots (9 inch diameter) using a semi-continuous water-cooled casting device. This 9-inch diameter rod-shaped ingot was
After homogenizing at 0°C for 12 hours, they were heated to 430'C and made using an extruder to a thickness of 5 mm and a width of 100 m, respectively.
It was extruded into a rectangular piece of m. During extrusion processing, the extrudability of each alloy was evaluated using the maximum extrusion speed at which the rectangular material could be extruded without surface defects or cracks. The results are shown in Table 2. After extrusion, each material was solution-treated at 460°C for 1 hour, quenched, and tempered at 120°C for 24 hours.
このようにして製造した材料について、引張試験、応力
腐食割れ試験、及び溶接割れ試験を行った結果を第２表
に併記した。なお、試験方法を下記に示す。Table 2 also shows the results of tensile tests, stress corrosion cracking tests, and weld cracking tests performed on the materials produced in this manner. The test method is shown below.
（１）加工性（押出性）
（ａ）押出条件 ：鋳塊サイズ−・・・・・−・−９イ
ンチ径（２１９ｍｍφ）
押出温度・−・・−・・−４３０°Ｃ
（ｂ）押出サイズ：５ＩＩ１１×１００１１００１１Ｉ
Ｉ評価方法 ：押出速度がＡ７０７５と同等か否かによ
り判定した。(1) Processability (extrudability) (a) Extrusion conditions: Ingot size: -9 inch diameter (219mmφ) Extrusion temperature: -430°C (b) Extrusion Size: 5II11×100110011I
I evaluation method: Judgment was made based on whether the extrusion speed was equivalent to A7075.
０−・−・Ａ７０７５の限界押出
速度以上
×−・−Ａ７０７５の限界押出
速度未満
（２）引張試験
（ａ）試験片 ： ＪＩＳ Ｚ ２２０１の５号試験
片（ｂ）試験方法 ：アムスラー万能試験機。0---A7075 limit extrusion speed or more x---A7075 limit extrusion speed (2) Tensile test (a) Test piece: JIS Z 2201 No. 5 test piece (b) Test method: Amsler universal testing machine .
ＪＩＳ Ｚ ２２４１に基づき試験する。Test based on JIS Z 2241.
：引張強さ、耐力、伸びを測定 し２次の基準で判定する。:Measure tensile strength, yield strength, and elongation Judgment is made using the following secondary criteria.
（ｃ）測定値
ｏ −・・引張強す５０ ｋｇｆ／ｓ＋ａ” 以上Δ・
・−引張強さ４０ｋｇｆ／ｍｓ”以上５０ｋｇｆ／ａｍ
”未満
×−引張強さ４０ ｋｇｆ／ａｍ”未満（３）応力腐食
割れ試験
（ａ）試験片 ： ＪＩＳ Ｈ８７１１の１号試験片
（ｂ）試験方法 ： ＪＩＳ Ｈ８７１１に基づく。(c) Measured value o -...Tensile strength 50 kgf/s+a" or more Δ・
・-Tensile strength 40kgf/ms" or more 50kgf/am
"Less than x - Tensile strength less than 40 kgf/am" (3) Stress corrosion cracking test (a) Test piece: JIS H8711 No. 1 test piece (b) Test method: Based on JIS H8711.
応力負荷−・−１号試験片用ジ グを用いて耐力の７５％を負荷 試験液、浸漬−３，５ｘＮａＣ１液。Stress load - - No. 1 test piece load 75% of proof strength using Test solution, immersion - 3,5x NaCl solution.
交互浸漬（周期１０分浸漬。Alternate immersion (10 minute immersion cycle).
５０分乾燥）３０日間
（ｃ）評価 ：応力腐食割れ発生の有無観察×−・
・割れ発生
○−・・−割れ発生せず
（４）溶接割れ試験
電極−・・・・・−−一−−−・−トリウム入りタング
ステン棒、 ３．２ｍｍφ
溶接電流・・−・−１８０Ａ
アーク電圧−・−１９Ｖ
溶接速度−−−３０ｃｍ／ｌｌ１ｉｎ
アルゴンガス流量−・・１０ ｊ”ｍ１ｎ（ｃ）割れ評
価 ：割れ長さ測定し９次の基準で判定する。50 minutes drying) 30 days (c) Evaluation: Observation of occurrence of stress corrosion cracking ×-・
・Cracking ○ --- No cracking (4) Welding crack test electrode --- 1 --- Thorium-filled tungsten rod, 3.2mmφ Welding current ---180A Arc Voltage: -19V Welding speed: 30 cm/ll1in Argon gas flow rate: 10 m1n (c) Crack evaluation: Crack length is measured and judged based on the 9th standard.
ｏ −・割れ長さ３０ｍ蒙未満
Δ・−割れ長さ３０ＩＩＩ１以上５０ｍｍ未満×−・割
れ長さ５０ｆｆｌＩ１以上
（ｂ）溶接条件 ：溶接方法・−・・・・・−ＴＩＧ溶
加材・−・・−・・・・・使用せず
表の結果より１本発明例によるものはいずれも。o - Crack length less than 30 mm Δ - Crack length 30III1 or more and less than 50 mm × - Crack length 50 fflI1 or more (b) Welding conditions: Welding method - TIG filler metal -・・・・・・・・No use was made according to the results of the table according to the present invention.
押出加工性１強度、耐応力腐食割れ性、溶接性の全てに
おいて優れていたのに対し、比較合金、従来合金はいず
れかの特性で劣っていた。The extrusion workability 1 strength, stress corrosion cracking resistance, and weldability were all excellent, whereas the comparative alloy and conventional alloy were inferior in any of the properties.
（発明の効果）
本発明においては、上述したところから既に理解しうる
ように、溶接構造用アルミニウム合金として、従来合金
を凌ぐ高強度を有し、かつ耐応力腐食割れ性に優れてお
り、しかも押出加工、圧延加工、ａ造加工等の熱間加工
性を保有した溶接構造用アルミニウム合金を提供しうる
ちのであり。(Effects of the Invention) As can be understood from the above, the present invention provides an aluminum alloy for welded structures that has higher strength than conventional alloys, has excellent stress corrosion cracking resistance, and We provide aluminum alloys for welded structures that have hot workability such as extrusion, rolling, and a-forming.
従来合金による場合に比べ、更に溶接構造材としての薄
肉軽量化の要請に好適に対応しうるものである。Compared to conventional alloys, this material can better meet the demands for thinner and lighter welded structural materials.
第１図はフィッシュボーン形割れ試験片を示す平面図で
ある。
１・・・フィッシュボーン形割れ試験片、ｌａ・・・溶
接ビード、 ｌｂ・・・溶接割れ、 ｌｃ・・
・割れ長さ。
１ｄ・・・溶接方向。FIG. 1 is a plan view showing a fishbone crack test piece. 1...Fishbone crack test piece, la...welding bead, lb...welding crack, lc...
・Crack length. 1d...Welding direction.
Claims (1)
０．０３〜１．０重量％、Ｆｅ０．０１〜１重量％、Ｔ
ｉ０．００５〜０．２重量％を含有し、かつ、Ｍｎ０．
０１〜１．５重量％、Ｃｒ０．０１〜０．６重量％、Ｚ
ｒ０．０１〜０．２５重量％、Ｂ０．０００１〜０．０
８重量％のうちの少なくとも１種または２種以上を含み
、残りアルミニウム及び不可避不純物からなることを特
徴とする耐応力腐食割れ性に優れた溶接用高力アルミニ
ウム合金。Zn4-7% by weight, Mg0.3-3.0% by weight, Ag
0.03-1.0% by weight, Fe0.01-1% by weight, T
i0.005 to 0.2% by weight, and Mn0.
01-1.5% by weight, Cr0.01-0.6% by weight, Z
r0.01-0.25% by weight, B0.0001-0.0
A high-strength aluminum alloy for welding having excellent stress corrosion cracking resistance, characterized in that it contains at least one or two or more of 8% by weight, and the remainder consists of aluminum and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26185589A JPH03122248A (en) | 1989-10-06 | 1989-10-06 | High strength aluminum alloy for welding excellent in stress corrosion cracking resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26185589A JPH03122248A (en) | 1989-10-06 | 1989-10-06 | High strength aluminum alloy for welding excellent in stress corrosion cracking resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03122248A true JPH03122248A (en) | 1991-05-24 |
Family
ID=17367690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26185589A Pending JPH03122248A (en) | 1989-10-06 | 1989-10-06 | High strength aluminum alloy for welding excellent in stress corrosion cracking resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03122248A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1885897A2 (en) * | 2005-05-25 | 2008-02-13 | Howmet Corporation | An al-zn-mg-ag high-strength alloy for aerospace and automotive castings |
| JP2011514434A (en) * | 2008-01-14 | 2011-05-06 | ザ・ボーイング・カンパニー | Aluminum zinc magnesium silver alloy |
| JP2011144396A (en) * | 2010-01-12 | 2011-07-28 | Kobe Steel Ltd | High strength aluminum alloy extruded material having excellent stress corrosion cracking resistance |
| JP2011241449A (en) * | 2010-05-18 | 2011-12-01 | Aisin Keikinzoku Co Ltd | High strength 7000 series aluminum alloy extruded material |
| JP2013100604A (en) * | 2012-12-27 | 2013-05-23 | Kobe Steel Ltd | High strength aluminum alloy extruded material for bumper reinforcement having excellent stress corrosion cracking resistance |
| US20130146183A1 (en) * | 2011-12-12 | 2013-06-13 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | High strength aluminum alloy extruded material excellent in stress corrosion cracking resistance |
| JP2014062285A (en) * | 2012-09-20 | 2014-04-10 | Kobe Steel Ltd | Aluminum alloy sheet for automotive member |
| JP2014062287A (en) * | 2012-09-20 | 2014-04-10 | Kobe Steel Ltd | Aluminum alloy sheet for automotive member |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118865A (en) * | 1982-12-25 | 1984-07-09 | Kobe Steel Ltd | Production of al-zn-mg alloy having excellent weldability and resistance to stress corrosion cracking |
| JPS61238937A (en) * | 1985-04-12 | 1986-10-24 | Showa Alum Corp | High-strength aluminum alloy for welding construction material excelling in extrudability and stress corrosion cracking resistance |
-
1989
- 1989-10-06 JP JP26185589A patent/JPH03122248A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118865A (en) * | 1982-12-25 | 1984-07-09 | Kobe Steel Ltd | Production of al-zn-mg alloy having excellent weldability and resistance to stress corrosion cracking |
| JPS61238937A (en) * | 1985-04-12 | 1986-10-24 | Showa Alum Corp | High-strength aluminum alloy for welding construction material excelling in extrudability and stress corrosion cracking resistance |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1885897A2 (en) * | 2005-05-25 | 2008-02-13 | Howmet Corporation | An al-zn-mg-ag high-strength alloy for aerospace and automotive castings |
| EP1885897A4 (en) * | 2005-05-25 | 2008-06-18 | Howmet Corp | An al-zn-mg-ag high-strength alloy for aerospace and automotive castings |
| JP2011514434A (en) * | 2008-01-14 | 2011-05-06 | ザ・ボーイング・カンパニー | Aluminum zinc magnesium silver alloy |
| JP2011144396A (en) * | 2010-01-12 | 2011-07-28 | Kobe Steel Ltd | High strength aluminum alloy extruded material having excellent stress corrosion cracking resistance |
| JP2011241449A (en) * | 2010-05-18 | 2011-12-01 | Aisin Keikinzoku Co Ltd | High strength 7000 series aluminum alloy extruded material |
| US20130146183A1 (en) * | 2011-12-12 | 2013-06-13 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | High strength aluminum alloy extruded material excellent in stress corrosion cracking resistance |
| US10697047B2 (en) | 2011-12-12 | 2020-06-30 | Kobe Steel, Ltd. | High strength aluminum alloy extruded material excellent in stress corrosion cracking resistance |
| JP2014062285A (en) * | 2012-09-20 | 2014-04-10 | Kobe Steel Ltd | Aluminum alloy sheet for automotive member |
| JP2014062287A (en) * | 2012-09-20 | 2014-04-10 | Kobe Steel Ltd | Aluminum alloy sheet for automotive member |
| JP2013100604A (en) * | 2012-12-27 | 2013-05-23 | Kobe Steel Ltd | High strength aluminum alloy extruded material for bumper reinforcement having excellent stress corrosion cracking resistance |
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