Correlation of microstructure, mechanical properties and electrical conductivityof Fe-Cu alloys produced by high-energy 3D ball milling and spark plasmasintering


Tasci U., Yilmaz T. A., Ozer M., Özer A.

CANADIAN METALLURGICAL QUARTERLY, vol.64, no.4, pp.1814-1825, 2025 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 64 Issue: 4
  • Publication Date: 2025
  • Doi Number: 10.1080/00084433.2024.2432713
  • Journal Name: CANADIAN METALLURGICAL QUARTERLY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.1814-1825
  • Gazi University Affiliated: Yes

Abstract

Fe-Cu is known as a metastable and immiscible alloy. Therefore, many problems are encounteredin the production of Fe-Cu alloys by conventional casting. Researchers have used differenttechniques for the production of successful Fe-Cu alloys. For this reason, in this experimentalstudy, the production of pure Fe and Fe-Cu (10%, 20% and 50% by volume) alloy compacts wasinvestigated by spark plasma sintering, a powder metallurgy technique. The effects of Cuaddition at different volume ratios on microstructure, density, hardness, three-point bending,wear and electrical conductivity were investigated. It has been determined that themicrostructures in Fe-Cu alloys consist of α-Fe and ε-Cu phases. Compared to the pure-Fesample, improvements were determined in the density, mechanical properties and electricalconductivity of the Fe-Cu alloy samples produced with the addition of Cu at 10%, 20% and 50%volume ratios. When the Fe-Cu alloys were compared with each other, the highest density,hardness, bending stress at break and the lowest wear rate were determined in the Fe-Cu alloycontaining 20% volume ratio Cu. The addition of Cu to Fe at 50% volume ratio caused adecrease in the density, mechanical properties and electrical conductivity.