Tailoring microstructure, tensile properties and fracture process via transient directional solidification of Zn-Sn alloys
Washington L.R. Santos, Clarissa B. Cruza, José E. Spinelli, Noé Cheung, Amauri Garcia
ARTIGO
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Agradecimentos: The authors acknowledge the financial support provided by FAPESP (São Paulo Research Foundation, Brazil: grants 2016/10596-6; 2017/12741-6; 2017/15158-0), CNPq and CAPES
The aim of the present study is to determine interrelations of microstructure length-scale, tensile properties and fracture mechanisms of hypoeutectic Zn-Sn alloys. Three compositions were subjected to transient directional solidification: Zn-10, 20 and 40 wt%Sn. Grainy-faceted cleavage has been...
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The aim of the present study is to determine interrelations of microstructure length-scale, tensile properties and fracture mechanisms of hypoeutectic Zn-Sn alloys. Three compositions were subjected to transient directional solidification: Zn-10, 20 and 40 wt%Sn. Grainy-faceted cleavage has been observed as the predominant mode of fracture, which propagated across the Zn-rich plate cells. A clear influence of the formed microstructure and proportion of eutectic may be noted in the fracture features, with alveolar structures also appearing in fracture surfaces. Growth laws relating the eutectic spacing with the growth rate are proposed, which are able to encompass both steady-state and transient solidification conditions. Hall-Petch type equations are developed relating the yield and ultimate tensile strengths, σy and σu, respectively, to the cellular spacing, λ, in which smaller λ values resulted in higher σy and σu
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COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2016/10596-6; 2017/12741-6; 2017/15158-0
Fechado
Tailoring microstructure, tensile properties and fracture process via transient directional solidification of Zn-Sn alloys
Washington L.R. Santos, Clarissa B. Cruza, José E. Spinelli, Noé Cheung, Amauri Garcia
Tailoring microstructure, tensile properties and fracture process via transient directional solidification of Zn-Sn alloys
Washington L.R. Santos, Clarissa B. Cruza, José E. Spinelli, Noé Cheung, Amauri Garcia
Fontes
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Materials science and engineering A: structural materials: properties, microstructures and processing Vol. 712 (Jan., 2018), p. 127-132 |