Fabrication of Al matrix in situ composites via self-propagating synthesis

Gotman, I.; Koczak, M. J.; Shtessel, É. A.

doi:10.1016/0921-5093(94)90347-6

Cited by 165 publications

(86 citation statements)

References 22 publications

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“…Algunas de estas técnicas son la oxidación direccional metal/metal (DIMOX) [5] , dispersión exotérmica (XD) [6] , infiltración por un gas reactivo [7] , reacción vapor-líquido-sólido (VLS) [8] , síntesis asistida por fundentes (FAS) [2 y 9] y la síntesis autopropagada a alta temperatura (SHS) [10] .…”

Section: Introductionunclassified

Desarrollo y caracterización de un material compuesto de matriz de aluminio 6061 y partículas de TiB2

Egizabal¹,

Merchán²,

García-de-Cortázar³

et al. 2010

REVMETAL

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ResumenUna de las vías desarrolladas, en los últimos años, para la mejora de las propiedades mecánicas de las aleaciones de aluminio es la de la incorporación de refuerzos cerámicos en forma de partículas cerámicas. El objetivo principal del trabajo ha sido desarrollar el proceso de fabricación de una aleación de aluminio 6061 reforzada con partículas de diboruro de titanio, TiB 2 , y analizar las propiedades del material obtenido. Se ha observado que el proceso de fabricación planteado, consistente en la fabricación de las partículas por medio del proceso de síntesis autopropagada a alta temperatura SHS (Self propagating high temperature synthesis) y su posterior incorporación a la aleación 6061, es un proceso viable para la fabricación de aleaciones reforzadas adecuadas para la realización de procesos subsiguientes de extrusión o forja. El resultado final es la obtención de un material adecuado para la fabricación de componentes extruidos y que presenta una mejora de sus propiedades de tracción y fatiga, en comparación a la aleación base. Palabras claveMateriales compuestos de matriz metálica (MCMM); Síntesis autopropagada a alta temperatura (SHS); Extrusión; Aluminio 6061; Partículas TiB 2 . Development and characterization of a metal matrix composite of aluminium 6061 and TiB 2 particulates AbstractThe incorporation of ceramic particles has been one of the ways developed to improve the mechanical properties of aluminium alloys during the last years. The main objective of this work has been to develop the manufacturing process of the reinforced aluminium alloy and analyse its mechanical properties and microstructure. Details about an innovative MMC manufacturing process and the results obtained in the development of a new family of TiB 2 -reinforced aluminium alloys for forging and extrusion applications are presented. It has been observed that the considered manufacturing process, consisting in the fabrication of particles by SHS and their incorporation into the selected alloy, is a feasible process to manufacture reinforced alloys that can be subsequently extruded or forged. The final result is the development of a material suitable for extrusion and forging applications and that presents an improvement of fatigue and tensile properties of the matrix alloy. KeywordsMetal matrix composites (MMC); Self propagating high temperature synthesis (SHS); Extrusion; Aluminium 6061; TiB 2 particles. INTRODUCCIÓNEl interés del sector del transporte, en los materiales compuestos de matriz metálica, MCMM, se debe a las posibilidades que ofrecen de sustitución de materiales y diseños con mayor peso y de contribución a la reducción del consumo de combustible mediante el aligeramiento de materiales. El sector aeronáutico está especialmente interesado en el desarrollo de materiales reforzados con partículas debido a su buen balance de propiedades/coste [1] .En los últimos años, gran parte de la investigación en MCMM se ha centrado en el desarrollo de nuevos procesos de fabricación de materiales reforzados con partículas. Ell...

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Section: Introductionunclassified

Desarrollo y caracterización de un material compuesto de matriz de aluminio 6061 y partículas de TiB2

Egizabal¹,

Merchán²,

García-de-Cortázar³

et al. 2010

REVMETAL

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“…This nonuniform propagation velocity leads to a non-steady-state oscillatory combustion that forms the product of a layered structure. 8,10) This means that, for the Al-30, 40 vol%TiB 2 , cracks shown in Figs. 2(a) and (b) resulted from this oscillatory combustion.…”

Section: Influence Of Powder Mixing Ratio Of Compacted Reactantmentioning

confidence: 99%

“…[4][5][6] On the other hand, titanium diboride (TiB 2 ) exhibits a high thermodynamic stability in aluminum as well as the high melting point, hardness and toughness. 7,8) In addition, when TiB 2 is formed by a chemical reaction between titanium and boron, the high heat of reaction is generated, as shown in the following equation: 9) Ti + 2B → TiB 2 , ∆H 0 = −320 kJ·mol…”

Section: Introductionmentioning

confidence: 99%

Fabrication of TiB2/Al Composites by Combustion Synthesis of Al-Ti-B System

et al. 2002

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Aluminum matrix composites reinforced with TiB 2 particles which were synthesized in situ by a combustion reaction between titanium and boron were fabricated from powder mixtures of Al, Ti and B. The combustion reaction was generated in the compacted powder mixtures with and without preheating by an ignitor. The influences of a powder mixing ratio, porosity and preheating of the compacted reactant on the combustion reaction for the Al-Ti-B system were experimentally investigated. The aluminum matrix composites including 30 to 60 vol%TiB 2 could be fabricated by the combustion reaction without preheating, but some macroscopic cracks were occurred in the composites except for the Al-50 vol%TiB 2 . The relatively large porosity and preheating before the combustion reaction were effective to the self-propagation of the combustion reaction and microstructure of the synthesized composites, especially in the low volume fraction of TiB 2 . The reaction between titanium and boron in the Al-Ti-B system was initiated after the melting of aluminum.

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“…Traditionally, these composites were prepared by powder metallurgy and diverse melting and casting routes (Chawla, 2012;El Baradie, 1990). However, in all these cases the scale of reinforcing phases and their distribution is constrained by the starting size of the reinforcements (Sheibani & Najafabadi, 2007;Gotman, Koczak, & Shtessel, 1994).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Aluminium Base in situ Metal Matrix Composites by Spark Plasma Sintering

Mallik¹,

Sikdar²,

Roy³

2017

JMSR

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Fe-aluminide and alumina reinforced in-situ aluminium based metal matrix composite was prepared by spark plasma sintering (SPS) of aluminium and nanosized Fe 2 O 3 powder mixture. In-situ reinforcements were formed during SPS by exothermal reaction between aluminium and nano-size Fe 2 O 3 particle. The thermal characteristics of the in-situ reaction were studied by differential scanning calorimetry (DSC). Field Emission Scanning Electron Microscopy (FESEM) along with the Energy Dispersive Spectroscopy (EDS) and X-ray diffraction (XRD) techniques were used to study the microstructural architecture of the composites as a function of SPS temperature and the volume fraction of reinforcement. Microhardness measurement of the composite shows significant increase in hardness with increase in SPS temperature and volume fraction of secondary phase.

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Fabrication of Al matrix in situ composites via self-propagating synthesis

Cited by 165 publications

References 22 publications

Desarrollo y caracterización de un material compuesto de matriz de aluminio 6061 y partículas de TiB<sub>2</sub>

Desarrollo y caracterización de un material compuesto de matriz de aluminio 6061 y partículas de TiB<sub>2</sub>

Fabrication of TiB<SUB>2</SUB>/Al Composites by Combustion Synthesis of Al-Ti-B System

Synthesis and Characterization of Aluminium Base in situ Metal Matrix Composites by Spark Plasma Sintering

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