Linear complexions: Confined chemical and structural states at dislocations

Margarita Kuzmina, Michael Herbig, Dirk Ponge, Stefanie Sandlöbes, Dierk Raabe

Science · 2015 · 307 citations · 27 references

Concepts

TL;DR

Steel’s strength and ductility depend on its structural defects, which are often modified to tailor material properties. Linear complexions are chemically and structurally distinct regions confined within a linear defect, isolated from the bulk by a surrounding dislocation layer. The authors created a new defect type—linear complexions—in magnesium‑rich steel, indicating a novel route to target defects and enhance alloy development. Kuzmina et al.

Abstract

Welcoming steel's new complexion Metals have a number of famous properties, including good strength and ductility. Controlling these properties frequently requires modifying the number and type of structural defects in a metal alloy. Kuzmina et al. produced a new type of defect, called a linear complexion, in magnesium-rich steel (see the Perspective by Kaplan). These complexions are chemically and structurally distinct regions located inside a linear defect and are isolated from the bulk by a layer of dislocations. The discovery suggests a new path for targeting defects and improving alloy development. Science , this issue p. 1080 ; see also p. 1059

References

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