Solid state infiltration of porous steel with aluminium by the forcefill process
-
Y. Estrin
,
E. Rabkin
Abstract
We report first results on producing a metal – metal composite by forcing solid aluminium to fill a porous steel preform. This process is akin to forcefill used for filling of vias when producing metallic interconnects in microelectronics. Using scanning electron microscopy with energy-dispersive X-ray spectroscopy, it was shown that for nominal pore size as small as 100 μm, the pores could be filled with aluminium throughout the entire preform used, thus demonstrating the viability of the process. An interesting aspect of this solid state ‘infiltration’ is that the tortuous random paths taken by the plastically flowing Al involve numerous kinks. Some of them may induce large localised shear deformation similar to that produced by equal channel angular pressing, which is used to fabricate bulk ultra-fine-grained materials. It is, therefore, conjectured that towards the exit end of the channels the infiltrating material may develop an ultra-fine grain structure and exhibit enhanced strength. It is suggested that the process described can be used to produce metal– metal (or ceramic – metal) composites with unusual mechanical properties. Thin fibres of the material that has percolated through the porous preform can be expected to have a sub-micron grain structure and to possess improved mechanical properties.
References
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© 2005 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Editorial
- Editorial
- Articles Basic
- Thermodynamics of grain boundary adsorption in binary systems with limited solubility
- Microstructural characteristics of 3-d networks
- On the three-dimensional twin-limited microstructure
- Grain growth kinetics in 2D polycrystals: impact of triple junctions
- Thermal stability of polycrystalline nanowires
- Conservative motion of parent-martensite interfaces
- Enthalpy – entropy compensation effect in grain boundary phenomena
- Thermodynamic stabilization of nanocrystallinity
- On the relation between the anisotropies of grain boundary segregation and grain boundary energy
- Influence of faceting-roughening on triple-junction migration in zinc
- The influence of triple junction kinetics on the evolution of polycrystalline materials during normal grain growth: New evidence from in-situ experiments using columnar Al foil
- Grain boundary dynamics and selective grain growth in non-ferromagnetic metals in high magnetic fields
- Grain boundary mobility under a stored-energy driving force: a comparison to curvature-driven boundary migration
- Diffusional behavior of nanoscale lead inclusions in crystalline aluminum
- Quantitative experiments on the transition between linear to non-linear segregation of Ag in Cu bicrystals studied by radiotracer grain boundary diffusion
- Room-temperature grain boundary diffusion data measured from historical artifacts
- Solid state infiltration of porous steel with aluminium by the forcefill process
- A mechanism of plane matching boundary-assisted α/γ phase transformation in Fe–Cr alloy based on in-situ observations
- Fast penetration of Ga in Al: liquid metal embrittlement near the threshold of grain boundary wetting
- High-pressure effect on grain boundary wetting in aluminium bicrystals
- Grain boundary segregation and fracture
- Notifications/Mitteilungen
- Personal/Personelles
- Press/Presse
- Conferences/Konferenzen
Articles in the same Issue
- Frontmatter
- Editorial
- Editorial
- Articles Basic
- Thermodynamics of grain boundary adsorption in binary systems with limited solubility
- Microstructural characteristics of 3-d networks
- On the three-dimensional twin-limited microstructure
- Grain growth kinetics in 2D polycrystals: impact of triple junctions
- Thermal stability of polycrystalline nanowires
- Conservative motion of parent-martensite interfaces
- Enthalpy – entropy compensation effect in grain boundary phenomena
- Thermodynamic stabilization of nanocrystallinity
- On the relation between the anisotropies of grain boundary segregation and grain boundary energy
- Influence of faceting-roughening on triple-junction migration in zinc
- The influence of triple junction kinetics on the evolution of polycrystalline materials during normal grain growth: New evidence from in-situ experiments using columnar Al foil
- Grain boundary dynamics and selective grain growth in non-ferromagnetic metals in high magnetic fields
- Grain boundary mobility under a stored-energy driving force: a comparison to curvature-driven boundary migration
- Diffusional behavior of nanoscale lead inclusions in crystalline aluminum
- Quantitative experiments on the transition between linear to non-linear segregation of Ag in Cu bicrystals studied by radiotracer grain boundary diffusion
- Room-temperature grain boundary diffusion data measured from historical artifacts
- Solid state infiltration of porous steel with aluminium by the forcefill process
- A mechanism of plane matching boundary-assisted α/γ phase transformation in Fe–Cr alloy based on in-situ observations
- Fast penetration of Ga in Al: liquid metal embrittlement near the threshold of grain boundary wetting
- High-pressure effect on grain boundary wetting in aluminium bicrystals
- Grain boundary segregation and fracture
- Notifications/Mitteilungen
- Personal/Personelles
- Press/Presse
- Conferences/Konferenzen
