Study of the Microstructure and Mechanical Properties of Copper-Nickel-Chromium Alloy in Annealing Process
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Abstract
Copper-nickel-chromium alloy (Cu-Ni30-Cr2) is a material developed to meet the needs of industries requiring corrosion-resistant materials, especially in marine environments. However, due to its dendrite structure and anisotropic behavior during solidification, this material poses obstacles in forming and machining processes. This study aimed to demonstrate an annealing process to determine the microstructure and mechanical properties of the original and annealed materials. Annealing was performed at a constant temperature of 500°C for 3 hours. The results showed that annealing improved the compositional distribution of the alloy's components, contributing to increased toughness. The maximum hardness reached 186 HV. In conclusion, the As-cast + Annealing method is the most suitable process for this research, ideal for applications in industries demanding high toughness, such as the energy and marine industries.
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