New mechanism for self-healing nanocracks discovered in metals
Researchers identified a novel mechanism that allows nanocracks in metals to heal without external pressure. Through molecular dynamics simulations, they found that migrating grain boundaries generate crystal defects, or disclinations, which close cracks and prevent further damage, even under tensile stress. This discovery opens up possibilities for enhancing the durability of nanocrystalline metals.
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.111.145501
Researchers observed that a cracked piece of metal spontaneously repaired itself under certain conditions, challenging existing understanding of material behavior. This discovery could lead to the development of self-healing materials, potentially revolutionizing industries like construction and aerospace by increasing the durability and lifespan of metal structures.
