Improvement in Mechanical Properties of Al2024 Alloy Using Mechanical Working and Heat Treatment.
Materials (Basel)
; 16(16)2023 Aug 10.
Article
en En
| MEDLINE
| ID: mdl-37629858
ABSTRACT
Extrusion speed has a significant influence on the extrusion temperature, microstructure and mechanical properties of the material in the repetitive continuous extrusion forming (RCEF) process. In this work, the mechanical properties of Al2024 were improved by adjusting the speed (with a general range of 2-10 rpm) of repetitive continuous extrusion and applying subsequent heat treatment. During the RCEF process, an increase in the extrusion speed from 4 to 8 rpm was found to increase the extrusion temperature and then enhance the solid solution function. The grain size was affected by the combined effect of deformation speed and its induced temperature. A high-strength Al2024 (ultimate tensile strength of 497.6 MPa) with good elongation (12.93%) was obtained by increasing the extrusion speed and conducting solid solution and artificial aging treatments. The main strengthening mechanisms could be attributed to finer grain size and a larger amount of S (Al2CuMg) precipitates.
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Banco de datos:
MEDLINE
Idioma:
En
Revista:
Materials (Basel)
Año:
2023
Tipo del documento:
Article
País de afiliación:
China