Publication result detail

Microstructural evolution and formation of extended voids in Ag-Cu metal-matrix composite during prolonged annealing

STRAKOŠOVÁ, A.; DVORSKÝ, D.; MOLNÁROVÁ, O.; KOLÍBAL, M.; DUCHOŇ, J.; SVORA, P.; PRŮŠA, F.; LEJČEK, P.

Original Title

Microstructural evolution and formation of extended voids in Ag-Cu metal-matrix composite during prolonged annealing

English Title

Microstructural evolution and formation of extended voids in Ag-Cu metal-matrix composite during prolonged annealing

Type

WoS Article

Original Abstract

Prolonged annealing of Ag-Cu metastable metal-matrix composite produced by compaction of Cu@Ag core-shell powder, revealed dramatic transformations in its microstructure. Heat treatment resulted in pronounced changes in particle morphology, extended grain boundary diffusion, and the formation of surface pores at the Cu/Ag interface, as well as extended voids within the bulk material. These phenomena are interpreted as consequences of the reduction of surface, interface and grain boundary energy, and diffusion and wetting processes, including pore migration and coagulation. Based on experimental observations, a model has been developed that explains the growth and migration of the pores leading to the formation of extended voids. This study provides new insight into the mechanisms of microstructural evolution in metal-matrix composites when annealed at relatively high temperatures, and opens pathways for their targeted application in advanced technologies such as electronic contacts.

English abstract

Prolonged annealing of Ag-Cu metastable metal-matrix composite produced by compaction of Cu@Ag core-shell powder, revealed dramatic transformations in its microstructure. Heat treatment resulted in pronounced changes in particle morphology, extended grain boundary diffusion, and the formation of surface pores at the Cu/Ag interface, as well as extended voids within the bulk material. These phenomena are interpreted as consequences of the reduction of surface, interface and grain boundary energy, and diffusion and wetting processes, including pore migration and coagulation. Based on experimental observations, a model has been developed that explains the growth and migration of the pores leading to the formation of extended voids. This study provides new insight into the mechanisms of microstructural evolution in metal-matrix composites when annealed at relatively high temperatures, and opens pathways for their targeted application in advanced technologies such as electronic contacts.

Keywords

Metal-matrix composite, Ag-Cu, Annealing, Shape changes, Diffusion, Voids formation

Key words in English

Metal-matrix composite, Ag-Cu, Annealing, Shape changes, Diffusion, Voids formation

Authors

STRAKOŠOVÁ, A.; DVORSKÝ, D.; MOLNÁROVÁ, O.; KOLÍBAL, M.; DUCHOŇ, J.; SVORA, P.; PRŮŠA, F.; LEJČEK, P.

Released

05.04.2026

Publisher

Elsevier

Periodical

Journal of Alloys and Compounds

Volume

1061

Number

1

State

Swiss Confederation

Pages from

1

Pages to

10

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0925838826014866

BibTex

@article{BUT201873,
  author="{} and  {} and  {} and Miroslav {Kolíbal} and  {} and  {} and  {} and  {}",
  title="Microstructural evolution and formation of extended voids in Ag-Cu metal-matrix composite during prolonged annealing",
  journal="Journal of Alloys and Compounds",
  year="2026",
  volume="1061",
  number="1",
  pages="1--10",
  doi="10.1016/j.jallcom.2026.187418",
  issn="0925-8388",
  url="https://www.sciencedirect.com/science/article/pii/S0925838826014866"
}