AA5024-H116铝镁钪合金

Features good weldability, excellent damage tolerance, good corrosion resistance, creep-formability. Aleris AlMgSc alloy AA5024 H116 allows simplification of the manufacturing process of aircraft fuselage components. With AA5024 H116 AlMgSc, stringer reinforced aircraft fuselage components can be either Laser Beam Welded (LBW) or Friction Stir Welded (FSW) when the individual parts are still flat, without any prior treatment. The single or double curvature of the fuselage part required for the aircraft body is achieved by creep forming at elevated temperature.Recommended for use as fuselage skin sheet with medium strength but excellent damage tolerance and corrosion properties and can potentially replace traditionally used 2xxx alloys even as drop-in solution.Temper, AMS and MMPDS registration pending. AA5024 H116 is covered by the Airbus specification AIMS 03-04-055 Information and property data for creep formed and welded (if applicable) sheet provided by Aleris.

Description

Aleris AlMgSc alloy AA5024 H116 as part of its AlMgSc technology allows to considerably simplifiy the manufacturing process of aircraft fuselage components. With AA5024 H116 AlMgSc, stringer reinforced aircraft fuselage components can be either Laser Beam Welded (LBW) or Friction Stir Welded (FSW) when the individual parts are still flat, without any prior treatment. The single or double curvature of the fuselage part required for the aircraft body is achieved by creep forming at elevated temperature. AA5024 H116 Sheet low density good weldability excellent damage tolerance good corrosion resistance creep-formable thermally stable easy-to-recycle Using this method, there is no distortion or springback of the material, thus enabling a high-precision and cost-effective production process. Even for traditionally riveted designs AlMgSc sheets can be formed with subsequent attachment of any kind of stringer material.

Application

AA5024 H116 low density sheets are recommended for use as fuselage skin sheet with medium strength but excellent damage tolerance and corrosion properties and can potentially replace traditionally used 2xxx alloys even as drop-in solution. The material is supplied in bare condition. Availability Sheets in AA5024 H116 are typically produced in gauges between 1.6 and 8.0 mm and supplied in annealed condition. Other dimensions as well as a material safety data sheet are available upon request.

Chemical Composition Limits (all data in wt.-%) according to the Aluminum Association

Alloy AA5024 Si 0.25 Fe 0.40 Cu 0.20 Mn 0.20 Mg 3.9-5.1 Cr 0.1 Zn 0.25 Ti 0.2 Zr 0.05-0.2 Sc 0.10-0.40 Others each 0.05 Others total 0.15...

Mechanical Properties (typical values) ...

Alloy Temper Thickness mm AA5024 H116 1,6 3 7 in AA5024 H116 0,06 0,12 0,28 Tensile strength MPa L LT 395 380 380 ksi 57 55 55 55 54 54 380 375 375 Yield strength MPa L LT 315 305 305 ksi 46 44 44 46 44 44 310 305 305 Elongation % L 15 15 15 % 15 15 15 19 18 17 Compression yield strength MPa L LT 325 305 295 ksi 47 44 43 46 44 44 315 305 300 Tension modulus GPa Compression modulus GPa Density g/cm 3 ...

LT 19 18 17...

72 Msi 10...

74 Msi 10...

2.65 lbs/in 3 0.096...

after creep forming and welding, if applicable...

Corrosion resistance NAMLT (Nitric Acid Mass Loss Test) according to ASTM G67-04 requirement < 15 mg/cm