Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
An Industrial Composition Prediction Methodology Based on a Stage-Dependent Thermodynamic–Kinetic Prediction Framework for Aluminum Volatilization During Electron Beam Cold Hearth Melting of TA18 Titanium Alloy. |
| Συγγραφείς: |
Li, Bobo, Fan, Jiangkun, Lin, Peng, Yan, Bingyao, Wang, Zhe, Liu, Zhenghong, Hao, Xiaobo, Pei, Teng, Tao, Huifa, Li, Yang, Jiang, Peng, Li, Jinshan |
| Πηγή: |
Metals (2075-4701); Sep2026, Vol. 16 Issue 9, p1049, 21p |
| Θεματικοί όροι: |
Prediction models, Volatization, Electron beam melting, Titanium alloys, Process optimization |
| Περίληψη: |
Aluminum volatilization during electron beam cold hearth melting (EBCHM) makes precise composition control of titanium alloys difficult. In this study, a thermodynamic–kinetic framework was established to describe Al evaporation, and a Global Prediction Model (GPM) and Stage-Dependent Prediction Model (SPM) were developed for composition prediction and process analysis. Under the reported comparison basis, the GPM predicted final Al content with a mean absolute percentage error (MAPE) of 4.51% and a maximum error of 8.47%; a first-order normalization of the 4.5 wt.% theoretical predictions to the 4.4 wt.% industrial charging basis reduced the concentration MAPE to approximately 2.10%, showing that part of the original offset arose from the charge-basis mismatch. The SPM showed a MAPE of 8.33% for final Al concentration. Both models systematically underestimated the measured Al loss, indicating a directional bias that remains to be resolved. The SPM predicted that the refining and melting hearths contributed approximately 44.4% and 32.5%, respectively, or 76.9% in total; these percentages are model-derived stage attributions and were not independently validated by stage-resolved measurements. The GPM is therefore most suitable for rapid overall composition prediction, whereas the SPM provides physically interpretable, stage-specific guidance for identifying candidate critical volatilization regions and optimizing EBCHM operating conditions. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: |
Complementary Index |