Processing-microstructure relationships in compocast magnesium/SiC

Laurent, Véronique; Jarry, Philippe; Regazzoni, G.; Apelian, Diran

doi:10.1007/bf00541578

Cited by 115 publications

(52 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In stir casting process when the wettability is low the mechanical stirring thrust is indispensible to overcome the surface energy barrier to make a powerful bond between the reinforcement phases and the liquid metal. The surface energy of reinforcement and matrix material and the surface condition of the ceramic particles are the two important factors on which the wettability between the matrix material and reinforcement phase largely depends [19]. Wettability between metal matrix and ceramic phase can be enhanced by decreasing the surface tension of the molten metal, increasing the surface energy of the solid and decreasing matrix-particle interface energy through adding additives to melt, coating of particles, subjecting the melt to ultrasonic irradiation and heating and cleaning of the particles [20][21].…”

Section: B Wettabilitymentioning

confidence: 99%

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Kaushik¹,

Singhaal²

2017

IJET

View full text Add to dashboard Cite

Abstract--The drift of research work from monolithic aluminum alloy to composite materials like Metal Matrix Composites (MMC's) is due to the world-wide proviso for economical, high working performance and superior quality materials. Metal matrix composites especially aluminum matrix composites (AMC's) due to their excellent strength with respect to their weight, superior wear resistance, economical and high corrosion resistance are extensively produced and utilized in several applications like, architectural components, structural applications, aerospace, automobile industry, ship building and many sports items and electrical and electronic components. The reinforcements like SiC, B 4 C, Al 2 O 3 , TiB 2 , Red mud, Graphite, Fly ash, and Coconut ash etc. can be easily incorporated as reinforcement agents in the molten melt by employing the economical and widely used stir casting technique, which improves strength, stiffness, fatigue, hardness, wear and creep properties of the AMCs. This paper gives an overview of mechanical, microstructural and wear performances of aluminum centered metal matrix composites produced by stir casting process reinforced with single and multiple types of reinforcements. The problems like reinforcement-metal matrix bonding, distribution of particles, wettability of reinforcing particles and agglomeration phenomenon are discussed in this paper. The effect of various reinforcement particles on aluminum matrix composites on mechanical properties like uts, ys, stiffness, hardness, fatigue, % E, wear and on resulting microstructure is discussed. The Modified and dual step stir casting technique for the fabrication of AMCs is also discussed in this paper. Keywords: Aluminum matrix composite (AMC), stir casting, reinforcement, mechanical properties, wear behavior I. INTRODUCTIONMetal based matrix composites reinforced with ceramic agents have a wide range of applications in aerospace, automobile, structural components and defense sector. Monolithic aluminum alloys have limitations in achieving good combinations of mechanical properties like strength, toughness, stiffness, wear resistance and density. Metal matrix composites are produced to overcome these shortcomings and to encounter the worldwide requirement for light weight materials with higher specific strength, corrosion resistant, high stiffness and excellent wear resistant properties [1][2]. The properties of aluminum alloy like low density, light weight, easy processing technique and fine engineering characterstics favored it as matrix material in MMC's [3]. The aluminum matrix series like AA2xxx, AA5xxx, AA6xxx, and AA7xxx have numerous applications in aerospace, defense instrument, architectural and structural components, automobile, sports good, and ship building [1][2][3][4].For the fabrication of metallic matrix composites several type of manufacturing methods are employed. The choice of appropriate manufacturing method highly alters the resulting composite microstructure, dispersion of ceramic agents, interfacial bonding betwe...

show abstract

Section: B Wettabilitymentioning

confidence: 99%

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Kaushik¹,

Singhaal²

2017

IJET

View full text Add to dashboard Cite

show abstract

“…Una de las grandes ventajas que existe al agitar la aleación en el estado semi-sólido es la incorporación de las partículas de refuerzo debido a las fuerzas de arrastre producidas (Lloyd, 1989). El atrapamiento de partículas es favorecido por la agitación mecánica, al mismo tiempo que la humectación del material de refuerzo es promovida por un efecto de limpieza de la superficie del material de refuerzo debido a los esfuerzos de corte desarrollados en la interfase sólido-líquido (Laurent et al, 1992). Sin embargo, mediante el presente estudio, ha sido posible incorporar las partículas de CdO de mayor tamaño en la aleación Ag-Cd en estado líquido.…”

Section: Tunclassified

Fabricación y caracterización de materiales Ag-Cd/CdO producidos mediante incorporación de partículas de CdO en aleaciones Ag-Cd líquidas

et al. 2014

View full text Add to dashboard Cite

RESUMEN:En el presente trabajo se investigó el comportamiento cinético del proceso de oxidación interna de láminas del material Ag-Cd/CdO fabricado mediante adición de partículas de CdO con tamaño de 5 y 20 mm en aleaciones Ag-Cd en estado líquido. Se ha establecido el mecanismo metalúrgico que controla la formación del espesor cubierto con partículas de CdO producido por oxidación interna del material Ag-Cd/CdO. Se desarrolló con éxito una técnica de preparación metalográfica para caracterizar el tamaño y distribución de partículas de CdO producidas por oxidación interna sobre la superficie de cada lámina en función de la distancia a partir de la superficie original hasta el límite de partículas de CdO dispersas. Las placas del material fueron desbastadas secuencialmente sobre su superficie y se midió el espesor desbastado en la sección transversal de cada nueva superficie para determinar el número de partículas por unidad de área y el tamaño promedio de partícula.PALABRAS CLAVE: Ag-Cd/CdO; CdO; Cinética; Contactor eléctrico; Frente de reacción; Oxidación interna Citation / Cómo citar este artículo: Equihua-Guillén, F., Ruíz-Mondragón, J., Servín-Castañeda, R., Orozco-González, P., Zaldívar-Cadena, A., Martínez-Villafañe, F., Villarreal-Garza, E. (2014) "Fabricación y caracterización de materiales Ag-Cd/CdO producidos mediante incorporación de partículas de CdO en aleaciones Ag-Cd líquidas". Rev. Metal. 50(1): e009. doi: http://dx.doi.org/10.3989/revmetalm.009. SUMMARY: Fabrication and characterization of Ag-Cd/CdO materials produced by incorporation of CdO particles to liquid Ag-Cd alloys.In the present work it has been investigated the kinetic behavior of internal oxidation processes of strips of Ag-Cd/CdO materials fabricated by adding CdO particles (size of 5 and 20 mm) in liquid Ag-Cd alloys. It has been established the metallurgical mechanism that controls the formation of the thickness covered with CdO particles produced by internal oxidation of the Ag-Cd/CdO material. It has been developed, successfully, a metallographic preparation technique for characterizing the morphology, size and distribution of CdO particles produced by heat treatment of internal oxidation on the surface of each sample based on the distance from the original surface to the boundary of dispersed CdO particles. The material strips were sequentially roughed on its surface and the roughing thickness was measured in the cross section of each new surface to determine the number of particles per area and average particle size.

show abstract

“…It can be observed that the MCTRC sample had a remarkably high tensile elongation of~28 pct, in comparison with~9 pct for the TRC strip and the reported data of 6 to 16 pct for the alloys prepared by other processes. [18,[45][46][47][48] Five samples were tested for each condition, and the averaged results are given in Table IV. The material produced by MCTRC also showed excellent features of yield and failure. As shown in the inset in Figure 9, in which the stress-strain curves in the yield region are magnified, the TRC sample had an apparent yield point.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

The Impact of Melt-Conditioned Twin-Roll Casting on the Downstream Processing of an AZ31 Magnesium Alloy

Bayandorian

Huang

Fan

et al. 2011

Metall Mater Trans A

View full text Add to dashboard Cite

Melt conditioning by intensive shear was used prior to twin-roll casting of AZ31 magnesium alloy strip to promote heterogeneous nucleation and to provide a refined and uniform microstructure without severe macrosegregation. The cast strip was then processed by homogenization, hot rolling, and annealing, and its downstream processing was compared with a similar cast strip produced without melt conditioning. Melt conditioning produced strip with accelerated kinetics of recrystallization during homogenization and improved performance in hot rolling and improved tensile properties. An average tensile elongation of~28 pct was achieved, which is substantially higher than the~9 pct obtained for the strip produced without melt conditioning which is consistent with reported values (~6 pct to 16 pct). The as-cast, homogenized, and hot-rolled microstructures of the strip were characterized. The kinetics of homogenization and hot-rolling process have been discussed in detail.

show abstract

Processing-microstructure relationships in compocast magnesium/SiC

Cited by 115 publications

References 12 publications

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Fabricación y caracterización de materiales Ag-Cd/CdO producidos mediante incorporación de partículas de CdO en aleaciones Ag-Cd líquidas

The Impact of Melt-Conditioned Twin-Roll Casting on the Downstream Processing of an AZ31 Magnesium Alloy

Contact Info

Product

Resources

About