{"title":"Irradiation Creep in Metals: Multiscale Modelling","authors":"A. B. Sivak, V. M. Chernov","doi":"10.1134/S1063774525600498","DOIUrl":null,"url":null,"abstract":"<p>The irradiation creep in metals with cubic crystal lattices at low stresses (below the yield strength) was studied within the framework of multiscale modelling. The modelling combines theoretical (dislocation theory of crystal plasticity, diffusion theory, anisotropic theory of elasticity, chemical kinetics) and computational (molecular statics, molecular dynamics, object kinetic Monte Carlo method) approaches. The values of the rate and modulus of irradiation creep were determined in metals with bcc (Fe, V) and fcc (Cu) crystal lattices containing rectilinear dislocations with the Burgers vectors 1/2〈111〉, 〈100〉 (bcc), and 1/2〈110〉 (fcc), uniformly distributed over possible families of their slip systems. The obtained calculated and theoretical values of the irradiation creep rate and modulus are in good agreement with the results of reactor experiments.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 4","pages":"630 - 637"},"PeriodicalIF":0.5000,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystallography Reports","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1063774525600498","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}
引用次数: 0
Abstract
The irradiation creep in metals with cubic crystal lattices at low stresses (below the yield strength) was studied within the framework of multiscale modelling. The modelling combines theoretical (dislocation theory of crystal plasticity, diffusion theory, anisotropic theory of elasticity, chemical kinetics) and computational (molecular statics, molecular dynamics, object kinetic Monte Carlo method) approaches. The values of the rate and modulus of irradiation creep were determined in metals with bcc (Fe, V) and fcc (Cu) crystal lattices containing rectilinear dislocations with the Burgers vectors 1/2〈111〉, 〈100〉 (bcc), and 1/2〈110〉 (fcc), uniformly distributed over possible families of their slip systems. The obtained calculated and theoretical values of the irradiation creep rate and modulus are in good agreement with the results of reactor experiments.
期刊介绍：
Crystallography Reports is a journal that publishes original articles short communications, and reviews on various aspects of crystallography: diffraction and scattering of X-rays, electrons, and neutrons, determination of crystal structure of inorganic and organic substances, including proteins and other biological substances; UV-VIS and IR spectroscopy; growth, imperfect structure and physical properties of crystals; thin films, liquid crystals, nanomaterials, partially disordered systems, and the methods of studies.
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