en

structural superplasticity

1

Terminological databases

Materjalitehnika terminibaas

ID 673554 Last modified 14.02.2024
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Domain materials science
  • üliplastsus, mida peamise deformatsioonimehhanismina iseloomustab teradevaheline libisemine; struktuurse üliplastsuse saavutamise olulisemaks eelduseks on mikrostruktuurne peeneteralisus - metalsetel materjalidel osakesed alla 10 µm, keraamilistel alla 1µm; täiendavateks üliplastsuse eeldusteks on deformeerimistemperatuur (üle rekristallisatsioonitemperatuuri) ning väike deformatsioonikiirus (tavaliselt 10 -2-10-6 s-1) (vt üliplastsus; vrd faasimuutusüliplastsus)
  • one of superplastic flow mechanisms controlled by diffusion processes; essential characteristics involved are: initial microstructure is very fine (few microns and less), stain-rate sensitivity exponent ranges from 0.3 to 0.7, and dominant grain boundary sliding mechanism occurs facilitating isotropic deformation; as different from transformation superplasticity the supeplastic flow happens at constant temperature without phase transformation (see: superplasticity; compare: transformation superplasticity)
struktuurüliplastsus preferred
struktuurne üliplastsus
structural superplasticity preferred
micrograin supeplasticity

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