A note on the inadequacy of dislocation theory (disbonding theory)

A model (conventional dislocation theory) was required to explain the extremely low shear strength of real metals in comparison with their theoretical strength. However, dislocation theory based on conventional metallic bonding cannot produce a real stress–strain curve. Disbonding theory based on th...

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Bibliographic Details
Published inJournal of materials processing technology Vol. 104; no. 1; pp. 8 - 10
Main Author Oh, Hung-Kuk
Format Journal Article
LanguageEnglish
Published Elsevier B.V 18.08.2000
Subjects
Bauschinger effect
Dislocation theory
Metallic bonding
Bauschinger effect
Metallic bonding
Dislocation theory
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Summary:A model (conventional dislocation theory) was required to explain the extremely low shear strength of real metals in comparison with their theoretical strength. However, dislocation theory based on conventional metallic bonding cannot produce a real stress–strain curve. Disbonding theory based on the crystallizing π-bonding of atoms, can easily explain the real stress–strain curve. Many π-far infrared rays emerge from the crystal lattices at the disbonding, and are used in the rebonding for plastic deformation and strain-hardening. Anelastic behavior, the hysterisis effect, the Bauschinger effect, and slip banding in fatigue can be easily explained by the π-far infrared rays and crystallizing π-bondings.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0924-0136
DOI:10.1016/S0924-0136(00)00509-4