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Experimental Procedure for Warm Spinning of Cast Aluminum Components

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Microstructural Evolution of a 3003 Based Aluminium Alloy during the CSET Process.

Orsolya Molnárová¹, Stanislav Habr¹, Esther de Prado¹

¹Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 18221 Prague, Czech Republic.

Materials (Basel, Switzerland)

|October 13, 2021

Summary

A novel complex shearing of extruded tube (CSET) technique effectively refines the grain size of 3003 aluminum alloy to 0.4 µm. This severe plastic deformation method significantly enhances microhardness from 40 HV to 120 HV.

Keywords:

complex shearing of extruded tubes microhardness microstructure severe plastic deformation tube forming

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Area of Science:

Materials Science
Metallurgy
Mechanical Engineering

Background:

Severe plastic deformation (SPD) is crucial for enhancing metal properties.
Existing SPD techniques have limitations in producing specific geometries like tubes.
The 3003 aluminum alloy is a widely used material with potential for property improvement.

Purpose of the Study:

To investigate the microstructural evolution of a 3003 aluminum alloy using a new SPD technique called complex shearing of extruded tube (CSET).
To evaluate the effectiveness of CSET in grain refinement and microhardness enhancement.
To analyze the contributions of individual CSET processes to the overall strain.

Main Methods:

Application of the complex shearing of extruded tube (CSET) technique, involving extrusion, Equal Channel Angular Pressing (ECAP), and torsional straining.
Microstructural analysis using light microscopy, electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM).
Microhardness testing to quantify changes in mechanical properties.

Main Results:

The CSET technique successfully refined the grain size of the 3003 aluminum alloy to an average of 0.4 µm.
Microhardness increased significantly from an initial 40 HV to a final 120 HV.
Detailed microstructural changes during partial CSET processes were observed and analyzed.

Conclusions:

The CSET technique is a highly effective method for producing fine-grained tubular structures in aluminum alloys.
CSET offers a promising route for significantly enhancing the mechanical properties of metallic materials.
The study provides valuable insights into the microstructural mechanisms governing CSET processing.