| Autor: |
Poshadel, Andrew C., Dawson, Paul R. |
| Předmět: |
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| Zdroj: |
Metallurgical & Materials Transactions. Part A; Jun2019, Vol. 50 Issue 6, p2640-2654, 15p, 2 Color Photographs, 2 Diagrams, 2 Charts, 5 Graphs, 3 Maps |
| Abstrakt: |
Using a correlation between local yielding and a multiaxial strength-to-stiffness parameter, the continuum-scale yield surface for a polyphase, polycrystalline solid is predicted. The predicted surface explicitly accounts for microstructure through the quantification of strength-to-stiffness based on a finite element model of a crystal-scale sample. The multiaxial strength-to-stiffness is evaluated from the elastic response of the sample and the restricted slip, single crystal yield surface. Macroscopic yielding is defined by the propagation of a yield band through the sample and is detected with the aid of a flood-fill algorithm. The methodology is demonstrated with the evaluation of a plane-stress yield surface for a dual-phase super-austenitic stainless steel. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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