• Nkem Emelike Nwankwo
• Kingsley C. Nnakwo
• Agatha I. Ijomah
• Ifeanacho U. Okeke

The grain refinement, impact energy, and physio-mechanical properties of Cu-3Si-3W and Cu-3Si-3Mn alloys can be tailored through alloying and solid solution treatment. Careful selection of alloying elements and precise control of processing parameters can lead to alloys with specific combinations of properties suitable for various applications, such as in aerospace, automotive, and electrical industries. This study explored the refining effects of tungsten, manganese, and subsequent solution heat treatment on the impact energy, density, and electrical conductivity of Cu-3Si-3W and Cu-3Si-3Mn alloys.The prepared alloys compositions were fabricated using the stir-casting technique and then machined to the required dimensions for property tests. The cast samples were subjected to solid solution heat treatment at a temperature of 900°C for 5 h. The microstructures of the cast samples were examined using an optical metallurgical microscope (OM). After heat treatment, there was an increased precipitation of secondary phases in the copper matrix. The results showed that impact energy of the parent alloys bot in as-cast and heat treated conditions are higher compared with the Cu-3Si-3Mn alloys. The Cu-3Si-3W exhibited better impact energy and electrical conductivity with maximum values of 16.6 J and 29.34 S/m, respectively. The Cu-3Si-3Mn alloy recorded lower bulk density after solution treatment, compared with both the parent alloy and the Cu-3Si-3W alloy. The bulk density of the parent alloy decreased from 8.21 g/cm3 to 7.96 g/cm3.

"Grain refinement, impact energy, and physio-mechanical properties of Cu-3Si-3W and Cu-3Si-3Mn alloys via alloying and solid solution treatment", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 9, page no.c583-c589, September-2023, Available :http://www.jetir.org/papers/JETIR2309264.pdf

"Grain refinement, impact energy, and physio-mechanical properties of Cu-3Si-3W and Cu-3Si-3Mn alloys via alloying and solid solution treatment", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 9, page no. ppc583-c589, September-2023, Available at : http://www.jetir.org/papers/JETIR2309264.pdf