Developing a phenomenological equation to predict yield strength from composition and microstructure in β processed Ti-6Al-4V
| Autor: | Hamish L. Fraser, Brian J. Hayes, Brian Welk, Iman Ghamarian, P. Samimi, Peter C. Collins |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Monte Carlo method Alloy Titanium alloy Thermodynamics 02 engineering and technology Composition (combinatorics) Lath engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Solid solution strengthening Crystallography Mechanics of Materials 0103 physical sciences engineering General Materials Science Ti 6al 4v 0210 nano-technology |
| Zdroj: | Materials Science and Engineering: A. 660:172-180 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/j.msea.2016.02.052 |
| Popis: | A constituent-based phenomenological equation to predict yield strength values from quantified measurements of the microstructure and composition of β processed Ti-6Al-4V alloy was developed via the integration of artificial neural networks and genetic algorithms. It is shown that the solid solution strengthening contributes the most to the yield strength (~80% of the value), while the intrinsic yield strength of the two phases and microstructure have lower effects (~10% for both terms). Similarities and differences between the proposed equation and the previously established phenomenological equation for the yield strength prediction of the α+β processed Ti-6Al-4V alloys are discussed. While the two equations are very similar in terms of the intrinsic yield strength of the two constituent phases, the solid solution strengthening terms and the ‘Hall-Petch’-like effect from the alpha lath, there is a pronounced difference in the role of the basketweave factor in strengthening. Finally, Monte Carlo simulations were applied to the proposed phenomenological equation to determine the effect of measurement uncertainties on the estimated yield strength values. |
| Databáze: | OpenAIRE |
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