Atomistic Image of the Kinetics of ‘Order-Order’ Reactions in Ni3Al+B-Reference-Cited by-同舟云学术

Atomistic Image of the Kinetics of ‘Order-Order’ Reactions in Ni3Al+B

Published:1995 Issue: Volume:398 Page:
ISSN:0272-9172
Container-title:MRS Proceedings
language:en
Short-container-title:MRS Proc.

Author:

Kozubski R.,Pfeiler W.

Abstract

ABSTRACTIsothermal ‘order-order’ relaxations in Ll2-ordered N76Al24+0.19at.%B were studied by means of residual resistometry. This method made it possible to register very fine changes in the degree of LRO occurring about 1000K below the disordering temperature. The experimental results of two simultaneous processes being involved in these order-order relaxations with a high activation energy of 4.6eV are explained with an atomistic model of atomic jumps to nn vacancies. The parallel processes are connected with selected jumps of atoms to nn vacancies on different sublattices with a high activation energy of vacancy formation being involved.

Publisher

Springer Science and Business Media LLC

Subject

General Engineering

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