The CIE chromaticity diagram of NCGW:0.6Tb³⁺,yEu³⁺ (y = 0–0.4) phosphors assigned to 1–8 along with the corresponding digital photograph excited by 254 nm light and the normalized intensity of the NCGW:0.6Tb³⁺,0.1Eu³⁺ phosphor at various temperatures.

We reported that work softening takes place during room-temperature rolling of nanocrystalline Ni at an equivalent strain of around 0.30. The work softening corresponds to a strain-induced phase transformation from a face-centered cubic (fcc) to a body-centered cubic (bcc) lattice. The hardness decreases with increasing volume fraction of the bcc phase. When the deformed samples are annealed at 423 K, a hardening of the samples takes place. This hardening by annealing can be attributed to a variety of factors including the recovery transformation from the bcc to the fcc phase, grain boundary relaxation, and retardation of dislocation gliding by microtwins.

Disconnections in the basal-prismatic (BP) interfaces of twin have been investigated by many computer simulations. In this paper, we report experimentally that the disconnection in the BP interface of twin in deformed titanium can be observed by high-resolution TEM (HRTEM). This disconnection can be characterized as using a coherent dichromatic complex. Correspondingly, the migration process of the basal-prismatic plane resulting from glide is described.

Twin boundary (TB) structure and interface defects in a twin in deformed polycrystalline cobalt were studied by using high-resolution electron microscopy (HREM). The TB tends to be flat and a mirror plane. Two interface defects with Burgers vectors b _−2/−2 and b _17/17 were found. The core structures of the observed interface defects were relatively compact.

Using transmission electron microscopy, we characterised the structures of the boundary caused by the interactions between different twin variants that share the same zone axis in a deformed magnesium alloy. We found that the twin–twin boundaries can adopt the habit planes that are parallel to the (0 0 0 2) basal plane or the prismatic plane or the twinning plane of the interacting twins. To investigate the formation mechanism of various twin–twin boundaries, we also performed atomic simulations. The results indicate that the formation of a twin–twin boundary may be related to the reaction of twinning disconnections that glide on the basal-prismatic planes of the interacting twins.