Low temperature solution hardening due to lattice distortion around impurity-vacancy pairs in calcium-doped NaCl crystals

P. Kálmán, A. Tóth, T. Keszthelyi, J. Sárközi

Research output: Contribution to journalArticle

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Abstract

Ionic displacements around a Ca2+ ion (I)-cation vacancy (V) pair in NaCl were computed by means of the semiclassical Born-Mayer theory of ionic solids. In this model both the displacements of the ten nearest Cl- ions and the off-centre displacement of the impurity ion were taken into account. Using the ionic displacements obtained and the elastic stress field of the dislocations the yield stress increment caused by I-V dipoles in NaCl crystals containing Ca2+ impurities was calculated. The results are compared with the yield stress value extrapolated to 0 K from low temperature measurements.

Original languageEnglish
Pages (from-to)85-93
Number of pages9
JournalMaterials Science and Engineering
Volume54
Issue number1
DOIs
Publication statusPublished - 1982

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Crystal lattices
Vacancies
Hardening
Calcium
Impurities
Crystals
Yield stress
Ions
Temperature measurement
Temperature
Positive ions

Cite this

Low temperature solution hardening due to lattice distortion around impurity-vacancy pairs in calcium-doped NaCl crystals. / Kálmán, P.; Tóth, A.; Keszthelyi, T.; Sárközi, J.

In: Materials Science and Engineering, Vol. 54, No. 1, 1982, p. 85-93.

Research output: Contribution to journalArticle

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