Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment.

This work investigated the feasibility of using a miniaturised non-standard tensile specimen to predict the post-necking behaviour of the materials manufactured via a rapid alloy prototyping (RAP) approach. The experimental work focused on the determination of the Lankford coefficients (r-value) of dual-phase 800 (DP800) steel and the digital image correlation (DIC) for some cases, which were used to help calibrate the damage model parameters of DP800 steel. The three-dimensional numerical simulations focused on the influence of the size effect (aspect ratio, AR) on the post-necking behaviour, such as the strain/stress/triaxiality evolutions, fracture angles, and necking mode transitions.

The Effect of Scandium Ternary Intergrain Precipitates in Al-Containing High-Entropy Alloys.

We investigate the effect of alloying with scandium on microstructure, high-temperature phase stability, electron transport, and mechanical properties of the AlCoCrFeNi, AlCoCrCuFeNi, and AlCoCrCuFeNi high-entropy alloys. Out of the three model alloys, AlCoCrFeNi adopts a disordered CsCl structure type. Both of the six-component alloys contain a mixture of body-centered cubic () and face centered cubic () phases.