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and higher applied stress, dislocation climbing plays a key role during creep deformation behavior; at higher temperature and lower applied stress, or at lower temperature and higher applied stress, the creep mechanism of alloy is dislocation slipping. Key words: TC18 titanium alloy; creep behavior; microstructure; dislocation climbing; dislocation slipping TC18钛合金(BT22,Ti-5Al-5Mo-5V-1Fe-1Cr)是前苏联航空......
a unique dislocation-free deformation mechanism, and thus its recovery and recrystallization behavior should be further studied and compared with traditional BCC metals. The substructures of the cold-swaged and the annealed TNTZO alloy were investigated by transmission electron microscopy(TEM) to study the recovery of the cold-swaged TNTZO alloy. The results show that no dislocation can......
amplitude. The strain-independent logarithmic decrement is mainly composed of thermoelastic damping and dislocation damping, which can be explained by Granato-Lücke theory. In addition, the strain.... Microstructure changes due to heat treatment are responsible for changes of the logarithmic decrement. Key words: AZ61 magnesium alloy; heat treatment; damping; dislocation ......
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Dislocation Behavior in ZrC Particles during Elevated Temperature Compressive Deformation of a 30 vol.% ZrC_p/W CompositeTaiquan Zhang1,2),Qingchang Meng1),Yujin Wang1),Yu Zhou1) and Guiming Song1,3... in the temperature range of 1200-1600℃.Dislocation nucleation mechanism in ZrC particles is discussed by analyzing the harmonious deformation between tungsten-matrix and ZrC particles.Thermal activation......
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and basal-plane dissociation, resulting in distinct gliding behaviors. The 3-dimension dissociated dislocation needs to transform into basal-plane dissociation, in order to initialize gliding on the basal plane, while the basal-plane dissociated dislocation has to transform into 3-dimension dissociation to glide on the prism plane, both of which produce further resistance to the dislocation glide......
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