Journal ArticleDOI
6061 aluminium alloy-SiC particulate composite: a comparison between aging behavior in T4 and T6 treatments
TLDR
In this paper, the aging process of 6061 AA and SiC particle composite was studied by hardness measurements and differential scanning calorimetry (DSC) and the results showed that the two materials showed the same aging rate when solution treatment was complete.Abstract:
Kinetics of natural aging and precipitation hardening (T4 and T6 tempers) were compared in 6061 aluminium alloy (AA) and 6061 AA−14vol.%SiC particle composite. Aging processes have been studied by hardness measurements and differential scanning calorimetry (DSC). The latter technique is used as a screening tool to follow the aging sequence; in fact, the DSC thermogram depicts characteristic features of different heat treatments undergone by samples. DSC curves for both 6061 AA and 6061AA-SiCp, after solution treatment, display the same aging path; on the contrary, the two materials differ in solution temperature, which is about 30 °C higher in the case of the composite. The precipitation hardening (at 180°C) occurs faster in the composite than in 6061 alloy. The latter presents a broad hardness peak ranging between 4 and 10 h of aging while the composite shows a sharp peak after about 4 h. Probably this behaviour is due to the high dislocation density close to the metal matrix-SiC particle interface. In these strongly deformed zones nucleation processes are accelerated. The aging kinetics at room temperature for the composite is slower than for the 6061 AA. In fact the two materials show the same aging rate when solution treatment in the case of the composite is complete. On the contrary, the composite ages more slowly than 6061 AA. Hence the high dislocation density at the interface, between composite constituents, does not affect T4 treatment.read more
Citations
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Journal ArticleDOI
Development of metal-matrix composites from industrial/agricultural waste materials and their derivatives
TL;DR: In this paper, the authors present a review on the state-of-the-art in the utilization of industrial and agricultural waste materials for the development of metal-matrix composites (MMCs), providing an insight into the challenges and opportunities for the exploitation to their full potential.
Journal ArticleDOI
Processing of squeeze cast Al6061–30vol% SiC composites and their characterization
TL;DR: In this paper, the effect of SiC particles on the aging behavior, mechanical properties and wear resistance of 6061 aluminum alloy made by squeeze casting method was investigated, and the results indicated that a homogenous distribution of siC particles in the aluminum matrix, which is almost free of pores, can be obtained by squeeze-casting method.
Journal ArticleDOI
Production of aluminium matrix composite components using conventional PM technology
G. O'Donnell,L. Looney +1 more
TL;DR: In this paper, the production of net shape SiC particle reinforced AA6061 aluminium alloy components by a conventional powder metallurgical processing technique, involving the uniaxial cold pressing and sintering of composite powders, was investigated.
Journal ArticleDOI
Processing and properties of copper-coated carbon fibre reinforced aluminium alloy composites
B. Bhav Singh,M. Balasubramanian +1 more
TL;DR: In order to avoid any interfacial reactions in the carbon fiber reinforced composites, the carbon fibres were coated with copper and then characterized by electroless coating method and then subjected to age-hardening treatment as discussed by the authors.
Journal ArticleDOI
Correlation between tensile and indentation behavior of particle-reinforced metal matrix composites: An experimental and numerical study
TL;DR: In this article, the correlation between tensile and indentation behavior in particle-reinforced metal matrix com- posites (MMCs) was examined and the effects of particle size, particle volume fraction, and matrix aging characteristics on the interrelationship between the tensile strength and macro-hardness were investigated.
References
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Journal ArticleDOI
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Journal ArticleDOI
Interfacial reactions between SiC and aluminium during joining
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Journal ArticleDOI
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TL;DR: On montre que les variations des caracteristiques de la microstructure de Al 6061 peuvent etre obtenues par l'introduction d'une quantite importante (23% volume) de carbure de bore as mentioned in this paper.
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A calorimetric study of precipitation in aluminum alloy 2219
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Journal ArticleDOI
Tensile Properties of Short Fiber-Reinforced SiC/AI Composites: Part I. Effects of Matrix Precipitates
J. M. Papazian,P. N. Adler +1 more
TL;DR: In this paper, the tensile behavior of aluminum matrix composites reinforced with 8 and 20 pet SiC whiskers or paniculate was characterized, and the effects of SiC additions on the elastic modulus and the work-hardening rate were discussed in relation to current theories of the strengthening of short fiber composites.
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