Effect of temperature, strain rate and impurity content on the work-hardening characteristics of lif single crystals
- 1 April 1971
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 23 (184), 859-867
- https://doi.org/10.1080/14786437108216993
Abstract
The work-hardening characteristics of LiF single crystals are investigated as a function of temperature and strain rate in high purity LiF and in LiF containing 800 p.p.m. Mg2+ impurity. It is shown that high purity crystals exhibit three stages of work hardening, depending upon temperature and strain rate. Both stage I and stage II work hardening are due to long-range, athermal dislocation interactions. Impurities suppress the three-stage work-hardening behaviour and give one linear stage of much higher work-hardening rate. These results indicate a close relationship between hardening mechanisms in LiF and in other ionic crystals.Keywords
This publication has 12 references indexed in Scilit:
- Work hardening in ionic crystalsPhilosophical Magazine, 1970
- A dislocation dynamics study in alkali halides as revealed by deformation currentsMaterials Science and Engineering, 1969
- Latent Hardening in Rock‐Salt Type CrystalsPhysica Status Solidi (b), 1969
- Factors affecting the mechanical behavior of lithium fluoride single crystalsScripta Metallurgica, 1968
- Instrumental modifications for compressive testing at temperatures up to 1800 CJournal of Scientific Instruments, 1967
- On the Kinetics of Plastic Deformation of Some Alkali Halide CrystalsPhysica Status Solidi (b), 1967
- Plastic Deformation and Work‐Hardening in NaClPhysica Status Solidi (b), 1964
- Debris Mechanism of Strain-HardeningJournal of Applied Physics, 1962
- Dislocation Density and Flow Stress of Sodium ChlorideJournal of Applied Physics, 1961
- Some dislocation interactions in simple ionic crystalsPhilosophical Magazine, 1959