Effect of Al Content and Heat Treatment on Microstructure of ZnAlCu Alloys

Margita Longauerová; Miroslav Glogovský; Marek Vojtko

doi:10.4028/www.scientific.net/KEM.647.85

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 647Effect of Al Content and Heat Treatment on...

Effect of Al Content and Heat Treatment on Microstructure of ZnAlCu Alloys

Abstract:

The work analyses microstructures of ZnAl4Cu1, ZnAl27Cu2 and ZnAl40Cu2Si2 alloys in cast condition and after heat treatment in relation to microhardness HV₀_.₂ and purity of the alloys. As shown the microstructure of ZnAl4Cu1 alloy contained η phase and eutectoid, which consisted phases α + η. ZnAl27Cu2 alloy contained α phase, eutectoid and ε phase, and ZnAl40Cu2Si2 alloy had a similar composition, but moreover contained Si particles. Microhardness in the molten state in ZnAl4Cu1 alloy was HV₀_.₂ = 94, in ZnAl27Cu2 alloy it was HV₀_.₂ = 117, and in ZnAl40Cu2Si2 alloy it was HV₀_.₂ = 142_.

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Periodical:

Key Engineering Materials (Volume 647)

Pages:

85-92

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.647.85

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Online since:

May 2015

Authors:

Margita Longauerová*, Miroslav Glogovský, Marek Vojtko

Keywords:

Al, Annealing, Casting, Cu, Microhardness HV_0.2, Microstructure, Si, Zinc Alloy

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