نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد، گروه مهندسی مواد، واحد کرج، دانشگاه آزاد اسلامی، کرج، ایران.
2 استادیار، گروه مهندسی مواد، واحد کرج، دانشگاه آزاد اسلامی، کرج، ایران.
3 استاد، دانشکده مهندسی متالورژی و مواد، پردیس دانشکده های فنی، دانشگاه تهران، تهران، ایران.
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
In this research, nickel was electrodeposited on AA2024 aluminum using direct current. The coated specimens were then heat-treated at different temperatures of 450, 500, and 550°C for 30, 60, 90 and 120 minutes under argon shielding gas. The treated specimens were characterized by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction analysis (XRD). The presence of Al3Ni2 and Al3Ni intermetallic compounds were noticed at 450°C after 120 minutes and 500 and 550°C after 60 minutes. Microstructural studies also demonstrated that heat treatment at 550°C for 90 and 120 minutes leads to cracks at the coating/substrate interface. The maximum hardness reached 1000 Vickers after heat treating at 500°C for 120 minutes.
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