The similarity of elements in multi-principle element alloys based on a new criterion for phase constitution
| Autor: | Man Liu, Hongjie Xu, Jili Ding, Xuan Li, Tao Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science Alloy Thermodynamics 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences chemistry.chemical_compound Similarity (network science) Phase (matter) Atom General Materials Science Multi-principle elements alloy Materials of engineering and construction. Mechanics of materials Mechanical Engineering Valence electron density Phase constitution 021001 nanoscience & nanotechnology Enthalpy of mixing 0104 chemical sciences chemistry Mechanics of Materials engineering TA401-492 0210 nano-technology Valence electron Similarity of elements Derivative (chemistry) |
| Zdroj: | Materials & Design, Vol 207, Iss, Pp 109849-(2021) |
| ISSN: | 0264-1275 |
| Popis: | Prediction of the phase constitution of the multi-principle elements alloys (MPEAs) with various element numbers is important for alloy design and performance optimization. Herein, valence electron density parameter, α , is proposed as an improvement of the valence electron concentration by including the impact of atom volumes. The phase constitution of numerous MPEAs is well predicted by the priori α- Δ H mix (enthalpy of mixing) criterion, evidenced by the distinguishing of FCC single phase, FCC and BCC dual-phase and BCC single phase. The similarity of elements in MPEAs is evaluated by the derivative of α and Δ H mix with respect to atomic percentage, which successfully predicts the phase constitution of CrFeNi with addition of Ti, Zr, Al, Cr, Fe, Ni, Co and Cu. This work provides valuable insights into priori judgement of the phase constitution of MPEAs in the view of the relationship between elements. |
| Databáze: | OpenAIRE |
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