EFFECT OF BASIC PHYSICAL PARAMETERS ON ENGINEERING PROPERTIES OF INTERMETALLICS
Abstract
An increased har ness of grain boundary regio s above that of the bulk material is found to exist generally in intermetallic compounds having a stoichiometric excess of active metal component. This hardening is shown to be associated with the anomalously high brittle-ductile transition temperature in these materials, and to be related to the 'pest' phenomenon. The presence of adsorbed oxygen an /or nitrogen in grain boundary regions is found to be responsible for the i creased hardness in these areas; the precise manner in which the resistance to plastic deformation is increased in this phenomenon is ot clear. The effect can be modified by ternary solute additions and to some extent by appropriate annealing reatments. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1962
- Accession Number
- AD0286880
Entities
People
- D.l. Wood
- J.h. Westbrook
Organizations
- General Electric