Abstract: The main objective of this research is to explore the influence of homogenization heat treatment on grain characteristics and mechanical properties of copper-silicon-zinc and copper-silicon-tin ternary alloys. The alloys compositions were designed using response surface optimal design (RSOD). The designed alloy compositions were melted, cast, and subjected to homogenization at 900oC for 5 h. The grain characteristics of the produced alloys were analyzed using an optical microscope (OM). The properties investigated were percentage elongation, tensile strength, and hardness. The OM results revealed the presence of segregated primary silicon and coarse intermetallic phase in the parent alloy. The surface morphology of the doped alloy consisted of refined and modified intermetallic phases evenly dispersed in the alloy structure. The mechanical tests results showed that the percentage elongation, ultimate tensile strength and hardness of the alloy increased significantly by addition of tin and zinc. Homogenization heat treatment led to further increase in the ultimate tensile strength and hardness of Cu-3Si-3Zn alloys from 353 MPa to 376 MPa and from 254 BHN to 268 BHN. Cu-3Si-3Sn ternary alloys showed decreasing trends in ultimate tensile strength and hardness values after undergoing homogenization heat treatment. However, it recorded an increased percentage elongation after homogenization heat treatment.
Keywords: Cu-3Si-3Zn; Cu-3Si-3Sn; grainsmorphology; strength; hardness.
Title: Influence of homogenization heat treatment on grain characteristics and mechanical properties of copper-silicon-zinc and copper-silicon-tin ternary alloys
Author: Nkem Emelike Nwankwo, Kingsley Chidi Nnakwo, Agatha Ifeoma Ijomah, Ifeanacho Uchenna Okeke
International Journal of Engineering Research and Reviews
ISSN 2348-697X (Online)
Vol. 11, Issue 3, July 2023 - September 2023
Page No: 64-69
Research Publish Journals
Website: www.researchpublish.com
Published Date: 15-September-2023
