• Subjects Mechanical properties Metals and alloys A martensitic medium-entropy alloy surpasses the long-standing strength-ductility ceiling of conventional ultrahigh-strength steels. • The strengthening without sacrificing ductility originates from Mo-B-C interface complexes that stabilize small-angle grain boundaries. • This is a preview of subscription content,access via your institution Access options Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription 27,99 €/ 30 days cancel any time Subscribe to this journal Receive 12 print issues and online access 251,40 € per year only 20,95 € per issue Rent or buy this article Prices vary by article type from$1.95 to$39.95 Prices may be subject to local taxes which are calculated during checkout References Perka, A. • K., John, M., Kuruveri, U. • L.Metals12, 1051 (2022).ArticleCASGoogle Scholar Perka, A. • K., John, M., Kuruveri, U.
Article Summaries:
- A new martensitic medium‑entropy alloy has been shown to exceed the traditional strength‑ductility limit of ultrahigh‑strength steels. Researchers attribute this performance to Mo-B-C interface complexes that form at grain boundaries, stabilizing small‑angle boundaries and preventing the loss of ductility that typically accompanies extreme strength. The study demonstrates that these interface structures can simultaneously enhance yield strength and maintain plasticity, offering a promising route for next‑generation structural materials. The findings, published in Nature Materials, suggest that careful control of interface chemistry can unlock superior mechanical properties in martensitic alloys.
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