High-temperature creep associated with the climb of extended dislocations subjected to chemical stresses |
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| Authors: | Jia Li Youwen Liu |
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| Institution: | 1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan Province 410082, P.R. China;2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan Province 410082, P.R. China |
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| Abstract: | The effect of chemical stresses upon the relation between extended dislocations and high-temperature creep in a thin plate has been investigated. The critical stress needed for the contraction of extended jogs and its effect on the creep rate are obtained. The results indicate that the critical stress needed for the contraction increases with decreasing stacking fault energy (SFE). However, creep occurs more easily with increasing SFE and increasing angle of the Burgers vector to the dislocation line, as well as with the concentration of any diffusing atoms. |
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| Keywords: | stacking fault energy (SFE) creep chemical stresses dislocation motion |
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