Some Alloys Don't Change Size When Heated. We Now Know Why. (www.caltech.edu)
from tedu to tech on 27 Jul 2023 21:56
https://azorius.net/p/DR3v53zKvnrR1t2Bf2

That anomalous behavior makes these alloys useful in applications where extreme precision is required, such as in the manufacture of parts for clocks, telescopes, and other fine instruments. Until now, no one knew why Invars behave this way. In a new paper published in Nature Physics, researchers from the lab of Brent Fultz, the Barbara and Stanley R. Rawn, Jr., Professor of Materials Science and Applied Physics, say they have figured out the secret to at least one Invar's steadiness.

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