Analysis of Semi-solid Processing for Metal Matrix Composite Synthesis Using Factorial Design


Autoria(s): Ranieri, Kratus; Kiyan, Carlos; Branco Costa, Antonio Fernando; Simões, Alexandre Zirpoli
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/01/2012

Resumo

The main goal in this work is to conduct a quantitative analysis of the mechanical stir casting process for obtaining particulate metal matrix composites. A combined route of stirring at semi-solid state followed by stirring at liquid state is proposed. A fractional factorial design was developed to investigate the influence and interactions of factors as: time, rotation, initial fraction and particle size, on the incorporated fraction. The best incorporations were obtained with all factors at high levels, as well as that very long stirring periods have no strong influence being particle size and rotation the most important factors on the incorporated fraction. Particle wetting occurs during stirring at semisolid state, highlighting the importance of the interactions between particles and the alloy globularized phase. The role of the alloying element Mg as a wettability-promoting agent is discussed. The shear forces resulting from the stirring system is emphasized and understood as the effect of rotation itself added to the propeller blade geometry.

Formato

144-150

Identificador

http://dx.doi.org/10.1590/S1516-14392012005000005

Materials Research-ibero-american Journal of Materials. São Carlos: Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, v. 15, n. 1, p. 144-150, 2012.

1516-1439

http://hdl.handle.net/11449/9503

10.1590/S1516-14392012005000005

S1516-14392012005000005

WOS:000300791600020

Idioma(s)

eng

Publicador

Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials

Relação

Materials Research-ibero-american Journal of Materials

Direitos

openAccess

Palavras-Chave #stir casting #semi solid processing #metal matrix composites
Tipo

info:eu-repo/semantics/article