Abstract
This study focused on the effect of overheating treatment on the microstructure and tensile mechanical property of zinc-aluminum alloy. Ingots with designed composition were manufactured by melting pure metals and cast at different temperatures from 500 °C to 650 °C. Microstructure, strength and fracture mechanism were studied and their relationships with overheating temperature were analyzed. Dendrite size decreased with increasing overheating temperature and turned to equiaxed crystal at 650 °C. The yield stress, ultimate tensile stress and elongation increased by 16%, 31% and 163%, respectively after overheating treatment. It was also found that with the increase of overheating temperature, the brittle fracture mechanism gradually turns to a mixed fracture mechanism.
Original language | English |
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Article number | 111071 |
Journal | Vacuum |
Volume | 201 |
DOIs | |
State | Published - Jul 2022 |
Externally published | Yes |
Keywords
- Fracture mechanism
- Microstructure
- Overheating treatment
- Zinc-aluminum alloy