The Influence of Remelting on the Properties of AlSi9Cu3 Alloy with Higher Iron Content

This article aims to evaluate the influence of remelting on the experimental Al-Si-Cu type alloy with higher iron content on mechanical properties in relation to the resulting structure. The remelting or recycling process is one of the means of reducing the production costs of the forge plant. The e...

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Bibliographic Details
Published in:Materials 2020-01, Vol.13 (3), p.575
Main Authors: Kasińska, Justyna, Bolibruchová, Dana, Matejka, Marek
Format: Article
Language:English
Subjects:
Aging
Aging (artificial)
Aging (natural)
Alloying effects
Alloys
Aluminum alloys
Aluminum base alloys
Automobile industry
Copper
Crystallization
Ductility
Elongation
Energy dispersive X ray analysis
Iron
Mechanical properties
Melting
Morphology
Optical microscopy
Production costs
Recycling
Silicon
Spectrum analysis
Structural analysis
Tensile strength
X ray analysis
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Summary:This article aims to evaluate the influence of remelting on the experimental Al-Si-Cu type alloy with higher iron content on mechanical properties in relation to the resulting structure. The remelting or recycling process is one of the means of reducing the production costs of the forge plant. The experimental part deals with the analysis of the results of mechanical properties, structural analysis, and the process of crystallization of structural components and their changes due to the increased iron content caused by remelting at different states of the examined alloy. The effect of remelting and ageing on microstructure was observed using a combination of different analytical techniques (light microscopy, scanning electron microscopy (SEM), and upon deep etching and energy dispersive X-ray analysis (EDX)). Tensile strength and elongation tests point to the negative effect of alloying, a gradual increase in wt% Fe and a change in the morphology of the iron phases, which began to manifest significantly after the fourth remelting. The process of natural ageing has been shown to be effective only on alloys with a lower number of remelting cycles, whereas the application of artificial ageing has resulted in improved mechanical properties in all the test alloys.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13030575