A possible mechanism for atomic transport in amorphous metals

Book · Thu Dec 31 00:00:00 EST 1998

OSTI ID:323454

Ee, L.D. van; Thijsse, B J; Sietsma, J ^[1]

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1. Delft Univ. of Technology (Netherlands). Lab. of Materials Science

The diffusion process at a temperature just below the glass-transition temperature is studied in a computer model of amorphous Ni{sub 81}B{sub 19}. The observed diffusion events cause structural changes that are highly localized and are correlated with low-frequency localized vibrational modes. The excitation of such a mode can result in a jump, which is identical to the diffusion event. The jump has a cooperative character involving some tens of atoms and can be of a reversible or of an irreversible nature.

• OSTI ID: 323454
• Report Number(s): CONF-971201-; TRN: 99:004256
• Resource Relation: Conference: 1997 fall meeting of the Materials Research Society, Boston, MA (United States), 1-5 Dec 1997; Other Information: PBD: 1998; Related Information: Is Part Of Phase transformations and systems driven far from equilibrium; Ma, E. [ed.] [Louisiana State Univ., Baton Rouge, LA (United States)]; Atzmon, M. [ed.] [Univ. of Michigan, Ann Arbor, MI (United States)]; Bellon, P. [ed.] [Univ. of Illinois, Urbana, IL (United States)]; Trivedi, R. [ed.] [Ames Lab., IA (United States)]|[Iowa State Univ., Ames, IA (United States)]; PB: 703 p.; Materials Research Society symposium proceedings, Volume 481
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOM TRANSPORT
NICKEL ALLOYS
BORON ALLOYS
AMORPHOUS STATE
COMPUTERIZED SIMULATION
DIFFUSION
CORRELATIONS
THEORETICAL DATA