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The formation of multipoles during high-temperature creep of austenitic stainless steels |
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| Authors: | P. R. Howell J. O. Nilsson A. Horsewell G. L. Dunlop |
| Affiliation: | 1. Department of Metallurgy and Materials Science, University of Cambridge, Cambridge, UK 2. Sandvik AB, 81101, Sandviken, Sweden 3. Laboratory of Applied Physics, Technical University of Denmark, Lyngby, Denmark 4. Ris? National Laboratory, Roskilde, Denmark 5. Department of Physics, Chalmers University of Technology, 412 96, G?teborg, Sweden |
| Abstract: | It is shown that multipole dislocation configurations can arise during power-law creep of certain austenitic stainless steels. These multipoles have been analysed in some detail for two particular steels (Alloy 800 and a modified AISI 316L) and it is suggested that they arise either during instantaneous loading or during the primary creep stage. Trace analysis has shown that the multipoles are confined to {1 1 1} planes during primary creep but are not necessarily confined to these planes during steady-state creep unless they are pinned by interstitials. |
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