What question did this study set out to answer?

To investigate how atomic faulting affects the toughness and thermal expansion properties of chromium alloys.

February 9, 2026Nature CommunicationsOpen Access

Atomic faulting drives exceptional toughness in low thermal expansion chromium alloys

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Demonstrates enhanced toughness in a chromium alloy through atomic faulting, suggesting new design pathways for high-performance materials.

To investigate how atomic faulting affects the toughness and thermal expansion properties of chromium alloys.
Developed a Cr 96 Fe 4 Ge 1.3 B 1 alloy with specific thermal expansion and toughness characteristics.
Analyzed the effects of layered Cr 2 B intermetallic precipitates on mechanical responses.
Examined interlayer interactions and their impact on stacking fault nucleation.
Achieved exceptional toughness of 240.2 J·cm -3 in the alloy.
Demonstrated low thermal expansion coefficients of 1.79 × 10 -6 K -1 from 200 to 315 K.
Improved interfacial cohesion and refined grain structure were observed, enhancing work-hardening capabilities.

Yu et al. (2026) studied this question.

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Demonstrates enhanced toughness in a chromium alloy through atomic faulting, suggesting new design pathways for high-performance materials.