Dislocations in plastically deformed L12 compounds based on Al3Ti
- 1 February 1992
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 7 (2) , 303-312
- https://doi.org/10.1557/jmr.1992.0303
Abstract
The fine structure of dislocations in lightly deformed samples of several cubic ordered alloys with composition based on Al3Ti has been examined by weak beam electron microscopy. For all the materials examined the dislocations tend to dissociate into two 1/2(110) partials separated by APB. Dislocation dissociation is not complete at very small strains and the strain required to dissociate, as well as the dissociation distance, varies from one alloy to another. Improvements in ductility achieved by alloying are directly related to the ease and extent of this dissociation.Keywords
This publication has 15 references indexed in Scilit:
- Compression behavior of TiB2-particulate-reinforced composites of Al22Fe3Ti8Journal of Materials Research, 1991
- Deformation of L12 AlTiFe single crystalline alloysScripta Metallurgica et Materialia, 1990
- Deformation and fracture of L12 (Al,Fe)3TiScripta Metallurgica et Materialia, 1990
- Compression behavior of the forged L12 compounds Al67Ti25Cr8 and Al66Ti25Mn9Scripta Metallurgica et Materialia, 1990
- Brittle cleavage of L12 trialuminidesJournal of Materials Research, 1990
- Electronic effect on the ductility of alloyed TiAl compoundActa Metallurgica et Materialia, 1990
- New cubic phases formed by alloying Al3Ti with Mn and CrScripta Metallurgica et Materialia, 1990
- Formation of structural L12 compounds in TiAl3-base alloys containing MnScripta Metallurgica, 1989
- High temperature phase equilibria of the Ll2 composition in the AlTiNi, AlTiFe, and AlTiCu systemsScripta Metallurgica, 1989
- Plastic deformation of the intermetallic compound Al3TiPhilosophical Magazine A, 1987