On low temperature plastic instability in pure niobium single crystals
- 1 August 1971
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 24 (188), 437-449
- https://doi.org/10.1080/14786437108227399
Abstract
Niobium single crystals of good purity and of various orientations were tested in tension between 2·17 and 17°K. At temperatures below about 12°K. heterogeneous deformation takes place. It seems possible to explain this behaviour by the local heating due to moving dislocations. The thermal origin of this instability is deduced by comparing stress–strain curves performed at 2·17°K in the normal and superconductive states. The influence of purity and temperature on thermal softening is discussed.Keywords
This publication has 7 references indexed in Scilit:
- Flow stress of niobium and niobium-molybdenum alloys in the superconducting and normal statesScripta Metallurgica, 1970
- A detailed study of the deformation of high purity niobium single crystalsPhilosophical Magazine, 1969
- Influence des défauts étendus sur les propriétés supraconductrices du niobiumJournal de Physique, 1968
- THE EFFECT OF ORIENTATION AND IMPURITIES ON THE MECHANICAL PROPERTIES OF MOLYBDENUM SINGLE CRYSTALSCanadian Journal of Physics, 1967
- The instability of plastic flow of metals at very low temperaturesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1957
- Note on the heating effect of moving dislocationsActa Metallurgica, 1956
- On the generation of vacancies by moving dislocationsAdvances in Physics, 1952