Abstract
In this study, the microstructures, mechanical and corrosion properties of Al-7Mg-2Zn-0.5Zr and Al-7Mg-4Zn-0.5Zr alloys fabricated by DED process were examined. For the manufacturing of pre-alloys for gas atomization, high amount of Mg was added in the form of Mg-Al2Ca master alloy, while, for the addition of Zr, Al-10Zr mater alloy was used. From the EBSD results, it was found that increasing of Zn amount from 2% to 4% did not change the grain size, nevertheless, it substantially enhanced the tensile strength of alloy, on the expense of a small decrease in elongation. However, when these alloys were subjected to heat-treatment at 400 °C for 4 hours, a considerable amount of increment in tensile strength were observed in 2%Zn-containing alloy, while, strength of the specimen having 4% Zn remained unchanged. This means that the precipitation behaviour of the two alloys was different. It was also found from the results of salt spray test that the corrosion rate increased as the content of Zn were increased.
| Original language | English |
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| Title of host publication | Euro PM 2019 Congress and Exhibition |
| Publisher | European Powder Metallurgy Association (EPMA) |
| ISBN (Electronic) | 9781899072514 |
| Publication status | Published - 2019 |
| Event | European Powder Metallurgy Congress and Exhibition, Euro PM 2019 - Maastricht, Netherlands Duration: 2019 Oct 13 → 2019 Oct 16 |
Publication series
| Name | Euro PM 2019 Congress and Exhibition |
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Conference
| Conference | European Powder Metallurgy Congress and Exhibition, Euro PM 2019 |
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| Country | Netherlands |
| City | Maastricht |
| Period | 19/10/13 → 19/10/16 |
Bibliographical note
Publisher Copyright:© European Powder Metallurgy Association (EPMA)
All Science Journal Classification (ASJC) codes
- Metals and Alloys
- Surfaces, Coatings and Films
- Surfaces and Interfaces