Experimental values of stacking-fault energies (SFE) offer a method of providing energy differences between stable and metastable close-packed structures. A rigorous relationship involves modelling the interface between the fault and the matrix, but a good working formula can be established by assuming...
This can be manifested conveniently by an effective stacking fault energy (SFE). The effective SFE of dislocation arrays is described within the elastic theory of dislocations and verified by atomistic simulations. The atomistic modeling results reveal that the general formulae of the effective SFE ...
ais not sharing favorite sections. 不分享喜爱的部分。[translate] a陶瓷配方表示方法和配料计算 Ceramic formula expression method and burden calculation[translate] aa low stacking fault energy 低堆垛层错能量[translate]
It is widely accepted that the generalized stacking fault (GSF) energy of a material is critical to analyze the dislocation core structure [32]. Generally, the famous classic Peierls-Nabarro (P-N) model combined with the GSF energy can give a quantitative description of the dislocation core ...
The most stable collapsed structure of the ω-phase strongly depended on the minimum stacking fault energy among different collapse degrees in accordance to the smallest charge density difference. Therefore, the concurrent compositional and structural instabilities of the ω-phase was attributed to the ...
The formation of stacking fault tetrahedra in Al and Cu: III. Growth by expanding ledges. Acta Mater. 59, 19–29 (2011). Article CAS Google Scholar Hirth, J. P. & Lothe, J. in Theory of Dislocations 2nd edn, (Krieger, 1982). Sabochick, M. J. & Yip, S. Migration energy ...
The growth mechanism of stacking fault tetrahedra in quenched gold. Appl. Phys. Lett. 3, 4–5 (1963). 14. Zinkle, S. J., Seitzman, L. E. & Wolfer, W. G. Stability of vacancy clusters in metals I. Energy calculations for pure metals. Phil. Mag. A 55, 111 (1987). 15. ...
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Afterwards, static calculations were performed by a tetrahedral method with Blöch corrections to obtain the accurate total energy at 0 K [35]. The formation energies of LPSO structures at 0 K, ΔHfLPSO, were calculated by the following formula:(1)ΔHfLPSO=ELPSO=x1∗EMg-x2∗EY-x3∗...
Numerical calculations are performed for both full and truncated tetrahedra interacting with edge dislocations, while a new analytical formula is derived for the elastic energy of a full tetrahedron-dislocation system. Calculations confirm that the stress field of glissile dislocations is not sufficient ...