Innovation in additive manufacturing of parts from aluminium matrix composites

Tatiana Tarasova,Galina Gvozdeva,Riana Ableyeva,S Bratan,S Gorbatyuk,S Roshchupkin,S Leonov

doi:10.1051/matecconf/201822401073

Abstract

The laser build-up cladding is a well-known technique for additive manufacturing tasks. Modern equipment for the laser cladding enables material to be deposited with the lateral resolution of about 100 μm and to manufacture miniature parts. In this paper the laser micro cladding process was investigated to produce miniature thin-wall parts of Al-based composites. Thin walls formation process by subsequent single tracks overlapping with vertical increment was investigated. The influence of the cladding parameters on the minimal width and the quality of the fabricated thin walls was examined. The thin walls with the minimal width of 140 μm and surface roughness Ra 1,5 μm were generated. Laser micro cladding potential to manufacture lattice-shaped structures of Al-Si composites was shown. Fabricated thin-wall structures can have application in different fields e.g. aviation, automotive and tooling industries.

Highlights

In case of micro laser metal deposition (LMD) the laser spot diameter is comparable to the size of the build up object construction feature, which in the process of direct laser deposition act as a substrate and determines the heat dissipation conditions
That should be taken into account during object build up by single tracks overlapping by regulating cladding parameters
To solve this problem theoretical forecasting is un-efficient because of a lack of information about heat and mass transfer occurred in extremely nonequilibrium micro LMD conditions

Summary

Introduction

In case of micro LMD the laser spot diameter is comparable to the size of the build up object construction feature, which in the process of direct laser deposition act as a substrate and determines the heat dissipation conditions. That should be taken into account during object build up by single tracks overlapping by regulating cladding parameters. To solve this problem theoretical forecasting is un-efficient because of a lack of information about heat and mass transfer occurred in extremely nonequilibrium micro LMD conditions. The choice of research material needs particular attention, which thermal-physical properties have to be predictable with known assumptions to compare experimental and theoretical data. Material should have a high complex of physical and mechanical properties and the potential commercialization

Methods

Results

Conclusion