WebAug 4, 2024 · The d orbitals overlapping mode on twin boundary edge (TBE) was quite different from that on its basal plane, where the d xz, d yz orbitals induced unbalanced electron occupation states in π*–p x, p y orbitals of the adsorbed N 2, which could effectively activate the N≡N bond. WebSep 13, 2024 · On the contrary, the twin boundary can sustain its integrity after being penetrated by a few dislocations and thus has a stronger inhibition effect on the dislocation motion in the plastic flow stage than the hetero interface. Thus replacing the hetero interfaces by twin boundaries will eventually improve the flow stress of the system.
Phys. Rev. B 97, 085304 (2024) - Strong anharmonic phonon …
WebDec 27, 2024 · For our D-BCS, the strongest reflection is {110}, associated with the mirror plane; the second strongest is {111}, associated with the observed D-twin boundary (Fig. S1 and Table S1). In order to identify potential twin boundaries, it is therefore important to compare the perpendicularities of different planes that show large density variations … WebJul 29, 2024 · Twin boundary is an effective structure to refine grains and denser twins contribute to a higher strength. Compared to the non-equilibrium grain boundaries generated by SPD, there is a much lower ... maryites
Anomalous twin boundaries in two dimensional materials
WebApr 3, 2024 · During plastic deformation, twins surrounded by Σ3 boundaries may exhibit a ... and (1−1−1) are the most active. Moreover, random boundaries have strong hindering effects on dislocations, and the nearby stress accumulates continuously with an increase in strain. In contrast, Σ3 boundaries demonstrate weak blocking effects ... WebTwin boundaries (TBs), as one kind of crystal defect, have often been observed in various material systems, and the (111)/[110] TB has been verified to show weak phonon scattering. However, it's still not clear whether other TBs can show similar thermal properties to the (111)/[110] TB. To solve this issue, WebMay 29, 2015 · While each tilt of a dipole would be a linear function of the applied field, their combination leads to frustration: The boundary polarity hinders the development of the bulk polarity for weak fields perpendicular to the twin walls. Only when the boundary polarity is sufficiently rotated under stronger fields do we find a sudden collapse of the ... hurricane mariana