Research Article
A Modified Eyring Equation for Modeling Yield and Flow Stresses of Metals at Strain Rates Ranging from 10−5 to 5 × 104 s−1
Table 3
Optimized material constants for several metallic materials.
| | | (MPa) | () | () |
| | Copper 105 μm | 96.4 | 2.35 | 2037 | | Copper 26 μm | 179.8 | 0.737 | 5919 | | Copper 9 μm | 271.6 | 0.612 | 7163 | | A304L 100 μm | 347.9 | 0.376 | 2946 | | A304L 10 μm | 667.5 | 0.737 | 2113 | | AA 6082-T6 | 342.7 | 0.795 | 9598 | | AA 7075-T6 | 718.6 | 0.907 | 3970 | | CVD textured tungsten | 1176 | 0.258 | 3158 | | Annealed mild steel (293°K) | 148.5 | 0.492 | 89007 | | Annealed mild steel (493°K) | 105.6 | 1.370 | 25711 | | Ti-47Al-2Mn-2Nb alloy (tensile yield) | 451.1 | 0.497 | 1462 | | Ti-47Al-2Mn-2Nb alloy (tensile ultimate strength) | 481.8 | 0.495 | 590 | | Polyetheretherketone (PEEK) [28] | 159 | 1.01 | 12038 |
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