Influence of Copper Addition on Structure and Hardness of the ZnAl40Cu3 Alloy after Heat Treatment

Abstract:

The effect of heat treatment on the structure and hardness of the ZnAl240Cu3 alloy is presented in the paper. ZnAl40 and ZnAl40Cu3 alloys were tested. The scope of the examination included: dilatometry, structural and hardness tests. There are two transformations taking place during the heating and the reverse transformation during cooling. Most important for the alloy is the first transormation which occurs at lower temperatures (from 104°C to 131°C). There are found, that long-term soaking at 185°C results in a significant decrease in the hardness of the ZnAl40Cu3.alloy. The reason for the observed decrease in the hardness of the ZnAl40Cu3 alloy by soaking at a temperature of 185°C is primarily disappearance of dendrites.

• Periodical: Solid State Phenomena (Volume 212)
• Pages: 75-80
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.212.75
• Online since: December 2013
• Authors: Rafał Michalik, Agnieszka Tomaszewska
• Keywords: Hardness, Structure, Zn-Al-Cu Alloys

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