Deformation twinning in ordered intermetallic compounds
Abstract
Mechanistic understanding of deformation twinning in ordered superlattice structures is reviewed, and the inter-relationships between twinning and generalized plastic flow or fracture toughness are discussed. While general discussions refer to all the fcc-based and bcc-based cubic and noncubic ordered intermetallic alloys, specific calculations of the energetic and kinetic aspects of deformation twinning are made for TiAl. The importance of the twin-slip conjugate relationship on high temperature mechanical properties is emphasized. Discussion is given of possible effects of macro- and micro-alloying on twinning propensity.
- Publication:
-
Presented at the Fall Meeting of the Materials Research Society
- Pub Date:
- 1988
- Bibcode:
- 1988mrs..meetR....Y
- Keywords:
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- Crystal Dislocations;
- Fracture Strength;
- Intermetallics;
- Mechanical Twinning;
- Superlattices;
- Ternary Alloys;
- Aluminum Alloys;
- Deformation;
- Strain Rate;
- Titanium Alloys;
- Solid-State Physics