SciTech Connect

Title: Atomic defects and diffusion in metals

Atomic defects and diffusion in metals The tracer self-diffusion data for fcc and refractory bcc metals are briefly reviewed with respect to (i) the available monovacancy formation and migration properties and (ii) the high-temperature diffusion enhancement above that expected for mass transport via atomic exchange with monovacancies. While the atomic-defect mechanism for low-temperature self-diffusion can be reliably attributed to monovacancies, the mechanisms responsible for high-temperature mass transport are not so easily defined at this time; both divacancies and interstitials must be seriously considered. Possibilities for improving our understanding in this area are discussed. 68 references, 7 figures.
Authors:
Publication Date:
OSTI Identifier:OSTI ID: 6338530
Report Number(s):CONF-811150-17
ON: DE83007774
DOE Contract Number:W-31-109-ENG-38
Resource Type:Technical Report
Resource Relation:Conference: Yamada conference on point defects and defect interactions in metals, Kyoto, Japan, 16 Nov 1981; Other Information: Portions are illegible in microfiche products
Research Org:Argonne National Lab., IL (USA)
Country of Publication:United States
Language:English
Subject: 36 MATERIALS SCIENCE; METALS; SELF-DIFFUSION; BCC LATTICES; EVALUATED DATA; FCC LATTICES; INTERSTITIALS; KINETICS; REVIEWS; VACANCIES; CRYSTAL DEFECTS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DATA; DIFFUSION; DOCUMENT TYPES; ELEMENTS; INFORMATION; NUMERICAL DATA; POINT DEFECTS 360104* -- Metals & Alloys-- Physical Properties