Examination of Dislocation Core Structures in B2 Intermetallic Alloys.
Abstract
In an effort to understand the detailed mechanisms involved in the plastic deformation of crystalline materials, the atomic level structure of dislocations has been studied in B2 ordered intermetallic alloys. High resolution electron microscopy (HREM) has been used to directly image dislocation cores in NiAl, CoAl and FeAl alloys. Alloys have been studied with stoichiometric and non-stoichiometric compositions. The observed structures have been related to the mechanical behavior observed in these alloys. The experimentally observed dislocation core structures have been compared to theoretical structures modeled (under ONR support) by Prof. D. Faikas. This has led to a critical analysis of the model structures and improvement in the modeling approaches, in particular for non-stoichiometric alloys. jg
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 27, 1995
- Accession Number
- ADA291486
Entities
People
- Martin A. Crimp
Organizations
- Michigan State University