Simulation of the plastic flow in Ni3Al: Work hardening and strain-rate sensitivity
| العنوان: | Simulation of the plastic flow in Ni3Al: Work hardening and strain-rate sensitivity |
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| المؤلفون: | P. Veyssière, Georges Saada, Benoit Devincre |
| المصدر: | Philosophical Magazine A. 79:1609-1627 |
| بيانات النشر: | Informa UK Limited, 1999. |
| سنة النشر: | 1999 |
| مصطلحات موضوعية: | Materials science, Physics and Astronomy (miscellaneous), Metallurgy, Metals and Alloys, Mechanics, Work hardening, Plasticity, Strain rate, Strain hardening exponent, Flow stress, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, General Materials Science, Sensitivity (control systems), Dislocation, Order of magnitude |
| الوصف: | The origin of the anomalous temperature dependence of the giant work-hardening rate and of the modest strain-rate sensitivity observed in many L12 alloys is investigated by means of an ‘end-on’ simulation of dislocation dynamics in Ni3Al. The present model reproduces most of the atypical mechanical properties observed experimentally. The study of the evolution of the distribution of the Kear-Wilsdorf locks during plastic deformation indicates that the order of magnitude of the work-hardening rate stems from a preferred exhaustion of the weakest locks. In addition, the low strain-rate sensitivity measured is found to rely on the absence of a correlation between the dislocation properties which provide the plastic strain and those which determine the flow stress level. |
| تدمد: | 1460-6992 0141-8610 |
| DOI: | 10.1080/01418619908210382 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::569f6ec670892bc1ccd7d01079effbe3 https://doi.org/10.1080/01418619908210382 |
| رقم الانضمام: | edsair.doi...........569f6ec670892bc1ccd7d01079effbe3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14606992 01418610 |
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| DOI: | 10.1080/01418619908210382 |