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ABSTRACT Two-hour milled (activated) Al–20Cu–15Fe (at%) powders were subjected to annealing at 600°C for 1 h. The phase and microstructural evolutions were characterized by X-ray diffractometry and scanning electron microscopy. Al7Cu2Fe… Click to show full abstract
ABSTRACT Two-hour milled (activated) Al–20Cu–15Fe (at%) powders were subjected to annealing at 600°C for 1 h. The phase and microstructural evolutions were characterized by X-ray diffractometry and scanning electron microscopy. Al7Cu2Fe and Al60Cu30Fe10 phases were formed after annealing. Both annealed and milled powders were consolidated using the flame spraying process. In both cases, FeAl(Cu) was the major phase while some oxides and α-Fe(Al,Cu) were also found. The coating produced from the milled powder was severely cracked and showed higher oxide content. The coating prepared from the annealed powder showed better quality. It was annealed at 600°C for 1 h to investigate the thermal stability of the various phases. All phases persevered after annealing while the Fe2Al5 phase was formed as a new phase.
Journal Title: Materials and Manufacturing Processes
Year Published: 2017
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