Phase separation in rapid solidified Ag-rich Ag-Cu-Zr alloys

Conference proceedings article

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Publication Details

Author list: Niyomsoan S., Gargarella P., Chomsaeng N., Termsuksawad P., K�hn U., Eckert J.

Publisher: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)

Publication year: 2015

Volume number: 18

Start page: 120

End page: 126

Number of pages: 7

ISSN: 1516-1439

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949992880&doi=10.1590%2f1516-1439.317614&partnerID=40&md5=0e2b4241b4e47d758da7c06f3c249e61

Languages: English-Great Britain (EN-GB)

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Abstract

The microstructure and phase formation of rapid solidified Ag-rich Ag-Cu-Zr alloys were investigated. Two types of structure; interconnected- and droplet-type structures, were obtained due to phase separation mechanisms. The former was spinodal decomposition and the later was nucleation and growth mechanism. Depending on the alloy compositions, three crystalline phases; FCC-Ag, AgZr and Cu10Zr7 phases were observed along with an in-situ nanocrystalline/amorphous composite. Vickers hardness testing indicated a significant increase of hardness in the nanocrystalline/amorphouscomposite alloy.

Keywords

Ag-rich alloys, Phase separation, Rapid solidification