Landolt-Börnstein - Group III Condensed Matter

2.1.1 General remarks

Abstract

This chapter discusses general remarks on properties and interactions of atomic defects in metals and alloys. Atomic defects or point defects are defects of the crystal lattice extending over atomic dimensions. The elementary point defects in a metal are vacancies (V), self interstitial atoms (SIA) and impurity- or solute-atoms (SA). Intrinsic point defects as vacancies and interstitials exist in pure metals under thermal equilibrium conditions. Vacancies can be produced, simply by heating to temperatures near the melting point, in concentrations sufficiently high for quantitative investigation; i.e. vacancies can be investigated under thermal equilibrium conditions at high temperatures. Atomic defects create changes of macroscopic properties (e.g. elastic constants, density, lattice parameter, electrical resistivity, hardening and others) that are relevant to many fields of materials science. A large number of complex phenomena created by irradiation, cold work, or quenching can be rationalized by the knowledge of relatively few point defect properties. In pure metals and in the majority of alloys, vacancies provide thermally activated atom transport and hence, vacancy properties directly influence atomic transport.

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Title
2.1.1 General remarks
Book Title
Atomic Defects in Metals
In
2.1 Introduction
Book DOI
10.1007/b37800
Chapter DOI
10.1007/10011948_29
Part of
Landolt-Börnstein - Group III Condensed Matter
Volume
25
Editors
  • H. Ullmaier
  • Authors
  • P. Ehrhart
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