en

dislocation loop

1

Terminological databases

Materjalitehnika terminibaas

ID 673764 Last modified 28.01.2025
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Domain materials sciencemechanics
  • suletud, libisemistasandil asetsev dislokatsioonijoon kristalli sisemuses, mille iga lõik on erinevate karakteristikutega, kuid sama Burgersi vektoriga (vt dislokatsioon, dislokatsioonijoon, Burgersi vektor)
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    • Dislokatsioonisilmus eraldab kristalli piirkondi, kus libisemine on toimunud ja alles toimumas.
  • dislocation line closing itself inside a grain, different parts of the loop being of different character and of different sense, but of the same Burgers vector (see: dislocation, dislocation line, Burgers vector)
    Good to know
    • A theoretical rationalisation of the observation that dislocations densities increase when a crystal is heavily deformed. Dislocation lines bow out as they are pinned at two or more points in the slip plane and eventually they wrap themselves around the pinning obstacles to form a dislocation loop in the slip plane while the process is then repeated.
dislokatsioonisilmus
dislocation loop

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