Role of Composition in Metallic Glass Formation.
Abstract
The paper surveys some ideas on the glass forming tendency of monatomic systems. According to the free volume model, glass formation in such systems would result primarily from 'jamming' due to the action of repulsive forces. From this viewpoint the metals most prone to glass formation should be those in which the repulsive part of the pair potential is, relatively, the largrdt; these are the noble, transition and polyvalent metals. Actually the most stable metal glasses formed so far are alloys of noble or transition metals (A) with compositions predominantly in the range A3B to A5B where B is a metalloid. The A elements may form a skeleton having a Bernal dense random packed structure which may be somewhat stabilized by filling its holes with metalloid atoms in the manner suggested by Polk. Some additional ideas on the effect of alloying on metal glass forming tendency are discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1971
- Accession Number
- AD0720342
Entities
People
- C. H. Bennett
- D. E. Polk
- D. Turnbull
Organizations
- Harvard University