Metal alloys defy the deep freeze, staying tough at -253°C
Researchers have identified a new class of niobium-titanium-based metal alloys that remain durable and crack-resistant at extremely low temperatures of -253°C. This discovery challenges the common behavior of body-centered cubic metals, which typically become brittle in cryogenic conditions.
Why it matters
Developing materials that maintain structural integrity in extreme cold is critical for advancements in space exploration and cryogenic engineering.
edited by Sadie Harley , reviewed by Robert Egan
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Add to Preferred Sources Electron microscopy image showing new defects forming between neighboring crystals of the niobium-titanium-based alloys. Scale bar: 5 μm. Credit: Cook et al. 2026. Scientists have discovered a class of metal that can unexpectedly resist extreme cold using an unusual mechanism. Normally such temperatures would make similar materials brittle and vulnerable to breaking. The findings, published in Nature , point to new principles for designing materials for cryogenic environments.
An international team led by the University of California, Berkeley, Lawrence Berkeley National Laboratory and the University of Oxford has uncovered a novel microscopic mechanism that allows two metal alloys to remain remarkably damage-tolerant at just 20 kelvin, or -253°C.
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