Preparation of Al-B4C Composite by Mechanical Alloying Method and Investigation of Its Thermomechanical Properties

Document Type : Original Article

Authors
Ali Alizadeh 1
Masoud Lotfian 2
Mohsen Heydari Beni 3
Jafar Eskandari Jam 3
1 Professor, Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Tehran, Iran.
2 . M.Sc., Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Tehran, Iran.
3 Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Tehran, Iran.
10.22034/stme.2024.471431.1070
Abstract
The combination of aluminum and its alloys with the powder metallurgy process has enabled various industries to take advantage of the advantages of powder metallurgy production while using the unique properties of this light metal. In this research, B4C reinforcement was used to strengthen aluminum alloy 5083, and Al-B4C nanocomposite was produced by mechanical alloying method and then extrusion and press-sintering operations were performed on the powders. Al5083 and Al5083-B4C powders were produced during the alloying process for 24 hours with a pellet to powder ratio of 20:1 and under argon atmosphere. First, the produced powders are compressed by cold press, and then the press-sinter samples are extruded at 600 degrees under nitrogen atmosphere and the extrusion samples are extruded at 505 degrees with an extrusion ratio of 9:1. In the following, the deformation behavior of Al5083 in the temperature range of 550-350 and strain rate of 0.01-0.1 has been studied. Also, a structural equation has been obtained in each of the production states for the silane stress in the form of a hyperbolic sine. The microstructure of the samples produced by both extrusion and press-sintering methods before the hot pressure test was also examined by optical microscope (OM) and scanning electron microscope (SEM) equipped with EDS spectrometer. The results of thermomechanical tests and microstructural studies show that the samples produced by the extrusion method have better mechanical properties than the press-sintered samples.
Keywords
Hierarchical Thin-Walled Structures
ABS Polymer
3D Printer
Lateral Impact
Energy Absorption
Subjects
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  • Receive Date 04 August 2024
  • Revise Date 17 November 2024
  • Accept Date 18 November 2024
  • First Publish Date 18 November 2024
  • Publish Date 21 September 2024