Mechanical behavior of Fe80P20/α-Fe amorphous/nanocrystalline composites studied by molecular dynamics simulations
Source abstract
Abstract
In this paper, the compression mechanical behavior of Fe 80P 20 /α-Fe amorphous /nanocrystalline composites (ANCCs) with grain diameters ( d) from 0 to 6 nm was studied by molecular dynamics simulations. The peak strength ( τ p) increases with increasing d from 0 to 6 nm, while the flow strength ( τ s) increases with increasing d from 0 to 5 nm, then decreases with further increasing d to 6 nm. As a result, the composite with d = 5 nm exhibits the highest normalized difference (Δ τ/ τ p, where Δ τ = τ p – τ s) indicating its good plasticity. In order to reveal the effect mechanism of nanocrystalline size on deformation behavior, the atomic shear strain at different levels was analyzed. Besides, the amorphization of α-Fe phase during deformation was investigated by common neighbor analysis. The result is helpful for improving the mechanical properties of Fe-based ANCCs by strict controlling of heat treatment process to adjust the nanocrystalline size.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Microstructure and mechanical properties · Magnetic Properties of Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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