Study of Thermal Resistance and Mechanical Properties of Thin Sheets of Low-Alloyed Aluminum Al-Cu-Mn and Al-Mg-Si Alloys

Abstract:

The paper investigates a variety of properties of thin aluminum sheets fabricated using physical action of pulsed magnetic fields and weak pulsed current. The possibility of using thermal resistant aluminum alloys parts in aircraft manufacturing, including ones made by forming processes which require sufficiently high plasticity of initial sheets, is widely discussed. Two possible technological options have been tested for manufacturing sheet samples of Al-Cu-Mn and Al-Mg-Si alloys. A set of properties has been investigated (thermal resistance, mechanical properties, specific electrical conductivity, macrostructure of weldability zones, corrosion resistance of alloy samples. Casted workpieces were thermo-mechanically treated by heating and upsetting to 50 – 55 % with consequent hardening and aging. After that workpieces were subjected to multi-cycle rolling up to 0.3x10^-3 m. The achieved results demonstrate that after 400 hours of exposure to 250°C, the thermal resistant parameters by tensile strength are higher after the exposure to weak pulsed currents than after the exposure to pulsed magnetic fields. Maximal thermal resistant parameters by tensile strength and maximal electrical conductivity was achieved in 01327+Sc (Al-Mg-Si) alloy. The mechanical properties, corrosion resistance and Erichsen formability parameters were also determined.

• Periodical: Materials Science Forum (Volume 870)
• Pages: 95-100
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.870.95
• Online since: September 2016
• Authors: E.G. Demyanenko*, I.P. Popov
• Keywords: Chemical Composition, Properties, Specific Electrical Conductivity, Tensile Strength, Thermal Resistance

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