Effect of laser alloying on heat-treated light alloys
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Krzysztof Labisz
Abstract
This paper presents the results of a microstructure and hardness investigation into the surface layer of cast aluminium–silicon alloys, after being alloyed by heat treatment and/or remelted with ceramic powders, using a high power diode laser (HPDL). The purpose of this work was to determine the appropriate laser treatment conditions for laser surface treatment of the investigated aluminium and magnesium alloys. For investigation of the obtained structure, optical and scanning electron microscopy was used with energy dispersive X-ray spectroscopy microanalysis. After the laser surface treatment was carried out on the heat-treated aluminium and magnesium cast alloys, there were visible structural changes concerning the microstructure, as well as distribution and morphology of the phases occurring in the alloy, influencing the hardness of the achieved layer. In the structure, three zones were discovered with different structures and properties. Concerning the laser treatment conditions for laser-surface hardening, the laser power and ceramic powder feed rate were also studied. The structure of the surface laser track changed so that two areas of the dispersing zone were detected, where the ceramic powder particles were present. This investigation, with the application of an HPDL for Al and Mg alloys, makes it possible to obtain or develop an interesting technology that is very attractive for the automobile and aviation industries, as a next step after laser surface treatment used for steels.
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- Low-temperature transformation to bainite in a medium-carbon steel
- Study on the welding continuous cooling transformation and weldability of SA508Gr4 steel for nuclear pressure vessels
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Articles in the same Issue
- Contents
- Contents
- Editorial
- A new editor for IJMR
- Original Contributions
- Structural anisotropy in equal-channel angular extruded nickel revealed by dilatometric study of excess volume
- Low-temperature transformation to bainite in a medium-carbon steel
- Study on the welding continuous cooling transformation and weldability of SA508Gr4 steel for nuclear pressure vessels
- Phase precipitation in transition metal-containing 354-type alloys
- Effect of laser alloying on heat-treated light alloys
- In-situ synthesis, microstructure and properties of Ti2AlN/TiB2 composite
- Characterization of mechanical properties of Al/TiCP MMC
- Performance evaluation of polysulfone/graphene nanocomposites
- Short Communications
- Influence of Cu and Mg addition on age-related deterioration in strength and creep behavior of Zn-12Al die casting alloys
- Effects of mixing speed of a composite on its friction coefficient and wear resistance
- DGM News
- DGM News