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September 23, 2024MaterialsOpen Access

Analysis of Ni-Cu Interaction in Aluminum-Based Alloys: Hardness, Tensile and Precipitation Behavior

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Authors

ESE. Isaac SamuelNational Research Council Institute for BiodiagnosticsASAgnes M. SamuelFederal University of TechnologyVSVictor SongménéÉcole de Technologie Supérieure

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Overview

Experimental analysis reveals modified intermetallic precipitation and delayed phase transitions in aluminum-silicon-copper cast alloys, highlighting microstructural control mechanisms.

Key Points

  • Addition of nickel promotes Cu-Ni phase precipitation on primary Al3Zr particles, while delaying the transition from coherent to incoherent Al2Cu precipitates.
  • Reaching 4% nickel notably reduces both the size and density of Al2Cu precipitates, forming an additional Al3Ni2Cu2 phase within the cast alloy matrix.
  • Assessment using high-resolution FESEM and TEM microscopes tracks intermetallics across aging conditions, supported by thermal analysis at ~0.8 °C/s.

Cite This Study

Samuel et al. (2024) studied this question.

synapsesocial.com/papers/68e57ae8b6db64358751a5c1https://doi.org/10.3390/ma17184676
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