Deformation twinning in intermetallic compounds—the dilemma of shears vs. shuffles
| Autor: | David P. Pope, Fuming Chu |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Materials science
Condensed matter physics Mathematics::General Mathematics Mechanical Engineering Superlattice Intermetallic Kinematics Laves phase Condensed Matter Physics Shear (sheet metal) Crystallography General theory Mechanics of Materials Condensed Matter::Superconductivity General Materials Science Deformation (engineering) Crystal twinning |
| Zdroj: | Materials Science and Engineering: A. 170:39-47 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/0921-5093(93)90367-n |
| Popis: | In this paper the geometric description and general theory of mechanical twinning are reviewed, the twins in general lattices and superlattices are summarized, and the kinematic process by which mechanical twins form is revisited. A case study of mechanical twinning of HfV2 + Nb, a C15 (cubic) Laves phase, is presented and the synchroshear of selected atomic layers is proposed to explain the physical process of twin formation. If the twins form in this way, then long shear vectors and/or atomic shuffles are not really necessary. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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