Modelling of high temperature interfacial reactions in continuously reinforced Ti/SiC metal matrix composites (MMCs)
نویسندگان
چکیده
Previous experimental work by Gundel and Wawner showed that the matrix alloy has a strong effect on reaction layer growth in Ti alloy/SCS-6 composite systems. A finite difference technique was used to model the reaction layer growth, which predicts the same trends as those exhibited by the experimental data. Matrix alloying elements such as Mo and Cr in metastable R alloys will affect the equilibrium compositions and diffusivities in the matrix, but matrix diffusion is not found to be rate controlling. Regular solution thermodynamic models indicate that the main affect of matrix composition is in controlling carbon-flux through the reaction layer by altering equilibrium C-Tic-Ti interfacial compositions.
منابع مشابه
COMMONALITY OF PHENOMENA IN COMPOSITE MATERIALS The effect of molybdenum on the microstructure and creep behavior of Ti–24Al–17Nb–xMo alloys and Ti–24Al–17Nb–xMo SiC-fiber composites
The effect of molybdenum (Mo) on the microstructure and creep behavior of nominally Ti–24Al– 17Nb (at.%) alloys and their continuously reinforced SiCfiber composites (fiber volume fraction = 0.35) was investigated. Constant-load, tensile-creep experiments were performed in the stress range of 10–275 MPa at 650 C in air. A Ti–24Al–17Nb–2.3Mo (at.%) alloy exhibited significantly greater creep res...
متن کاملTITANIUM METAL MATRIX COMPOSITES FOR AEROSPACE APPLICATIONS S. A. Singerman* and J. J. Jackson** *Pratt &Whitney West Palm Beach FL **GE Aircraft Engines
Aerospace engine and airframe designers are constantly seeking lighter weight high strength materials to reduce weight and improve performance of powerplants and aircraft. Titanium metal matrix composites (Ti MMCs) have offered the promise of significant weight savings since their initial development in the early 1960s but until recently, their inadequate quality and reproducibility combined wi...
متن کاملStudy of the Enhanced Precipitation of an Aluminium 6061 Alloy Reinforced by SiC Particles in the Range of β\" Phase Temperature (RESEARCH NOTE)
An experimental method to follow the evolution of the precipitation phenomena in the metal-matrix composites using the thermoelectric power measurements is described. It is shown that one can follow the kinetics of the precipitation during aging. The influence of the reinforcement on the precipitation kinetics is studied in case of an aluminum 6061- SiC, composite (where SiC, represents SiC par...
متن کاملPhysio-mechanical Properties of Aluminium Metal Matrix Composites Reinforced with Al2O3 and SiC
Particulate reinforced metal matrix composites (MMCs) are potential materials for various applications due to their advantageous of physical and mechanical properties. This paper presents a study on the performance of stir cast Al2O3 SiC reinforced metal matrix composite materials. The results indicate that the composite materials exhibit improved physical and mechanical properties, such as, lo...
متن کاملSynthesis of Aluminum- CNTs Composites Using Double-Pressing Double-Sintering Method (DPDS)
Metal matrix composite (MMC) is engineered combination of the metal (matrix) and hard particle (reinforcement) to get tailored properties. MMCs are either in use or prototyping for the space shuttle, commercial airliners, electronic substrates, automobiles, golf clubs, and a variety of other applications.In this study, carbon nanotubes (CNTs) reinforced aluminum MMCs were synthesized by DPDS fo...
متن کامل