Generalized Stacking Fault Energies of Aluminum Alloys–Density Functional Theory Calculations

Metals

Zbigniew Pakieła¹  Marek Muzyk²  KrzysztofJ. Kurzydłowski³ 

[1] Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland;Faculty of Mathematics and Natural Sciences, School of Exact Sciences, Cardinal Stefan Wyszynski University in Warsaw, Woycickiego 1/3 building 21, 01-938 Warsaw, Poland;Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 54C, 15-351 Białystok, Poland;

关键词: Ab initio calculations;    aluminum alloys;    twinning;   

DOI  :  10.3390/met8100823

来源: DOAJ

【 摘 要 】

Generalized stacking fault energies of aluminum alloys were calculated using density functional theory. Stacking fault energy of aluminum alloys was correlated with the d-electrons number of transition metal alloying elements. The tendency to twinning is also modified by the presence of the alloying element in the deformation plane. Our results suggest that Al alloys, with such elements as Zr, Nb, Y, Mo, Ta, and Hf, are expected to exhibit a strong work hardening rate due to emission of the partial dislocations.

【 授权许可】

Unknown