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; 文献标志码:A Dynamic recrystallization of AZ31 magnesium alloy simulated by Laasraoui-Jonas dislocation equation coupled cellular automata method LIU Xiao1, 2, ZHU Bi-wu1, 2, LI Luo-xing1... and 1/T was observed. The results show that the modified Laasraoui-Jonas (L-J) dislocation density equation can be employed to calculate the dislocation evolution during dynamic recrystallization......
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to the process variables in deformation process of metals and alloys. A microstructure evolution model of a titanium alloy in hot forming, which included dislocation density rate and primary α phase grain size, was presented according to the deformation mechanism and driving forces, in which the effect of the dislocation density rate on the grain growth was studied firstly. Applying the model......
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exhibits apparent growth orientation. TEM reveals that there exists large quantity of dislocation pile-up and twins in Cu5.6Sn grains. Those twins are parallel to each other with the interspacing about 25~80nm, and extend to the boundary of Cu5.6Sn branches. The increase of cooling rate results in the increase of dislocation density and twin quantity. Key words: Cu-Sn alloy; rapid solidification......
. Shenyang Liming Aero-engine Corporation, Shenyang 110043, China) Abstract: By measuring the creep curves, observing the microstructure and analyzing dislocation configuration of the nickel-base single... of ordered g ? phase is shorter. There are lots of dislocation nets in matrix channel and ordered g ?/g two-phase interface place, and a part of á110? super dislocations shear the ordered g ? phase......
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effect in 2124 aluminum alloy were studied. It is deduced that the key mechanism lies in the effect of dislocation. Key words: 2124 aluminum alloy; creep aging; orientation effect; dislocation 1... samples in different test conditions 3.3 Discussion In initial period of the creep aging, apparent dislocation lines can be observed around the coarse particles (T phase), as shown in Fig. 5......
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model. The driving force of re-grain growth was provided by dislocation density accumulating around the grain boundaries. To verify the CA model, the predicted flow stress by the CA model... decreases with the increasing strain rate or decreasing temperature. Key words: discontinuous dynamic recrystallization; cellular automaton; dislocation density evolution; recrystallization kinetics; TA15......
