Dispersion-strengthened gold

Nanoscale gold pillars strengthened through dislocation starvation

It has been known for more than half a century that crystals can be made stronger by introducing defects into them, i.e., by strain-hardening. As the number of defects increases, their movement and multiplication is impeded, thus strengthening the material. In the present work we show hardening by dislocation starvation, a fundamentally different strengthening mechanism based on the elimination...

Spectroscopic Analyses of Nano-Dispersion Strengthened Transient Liquid Phase Bonds

Surface Segregation of Boron in Dispersion - Strengthened Copper

The improved yield strength of annealed dispersionstrengthened copper (DSC) over conventional OFE copper makes it a possible candidate for use in extremely high potential gradient particle accelerator structures where stability is of critical importance. Test brazes of such structures show that the surface of DSC is not readily wetted by conventional goldbased braze alloys used for copper. Surf...

Enhanced Densification of Cavitated Dispersion- Strengthened Aluminum by Thermal Cycling

We report experimental data of creep cavity shrinkage for dispersion-strengthened-cast aluminum with about 23 vol pct submicron Al2O3 dispersoids, annealed isothermally or subjected to thermal cycling without applied stress. Thermal cycling is found to increase the rate of densification by a factor of 3 to 5.5 relative to isothermal annealing at the upper cycling temperature, allowing for recov...

Electrochemical and Tribological Behaviour of Oxide Dispersion Strengthened Duplex Stainless Steel in Mine Water Environment

Abstract This work investigated the electrochemical and aqueous tribological behavior of hot pressed 2205 duplex stainless steel (DSS). DSS sintered composites of different volume percent (% vol) of partially stabilized zirconia (PSZ) was developed using powder metallurgy (PM) technique. Electrochemical behaviour was studied at room temperature, using open circuit potential and potentiody...