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General yield behaviors of the {110} hexagonal dislocation networks in body centered cubic metal molybdenum
Xia, Z. Y.; Zhang, Z. J.; Yan, J. X.; Yang, J. B.; Zhang, Z. F.
2019-12-01
Source PublicationCOMPUTATIONAL MATERIALS SCIENCE
ISSN0927-0256
Volume170
AbstractThe {110} hexagonal dislocation networks (HDNs) act as important carriers of the low-temperature plastic deformation in the body-centered-cubic (BCC) metals. Erenow, only a handful of studies have been performed on the yield behaviors of this planar networks, resulting in it being perplexing. In this letter, by three types of loading modes, the general yield behaviors, which comprise the critical stresses to move the network along any direction on the (01 (1) over bar) plane, the partitions on the cooperative motion of two or three sets of dislocations and the conditions under which the steady motion of the HDN takes place, are proposed to disclose the motion mechanism for the HDNs in molybdenum by atomistic simulations. Also, the characteristic that the motion directions of the HDN are changeable, a result of the natural transition to the steady motion, explains why there is no fixed dead band for the (01 (1) over bar) anomalous slip in these BCC metals.
KeywordHexagonal dislocation networks Body centered cubic Yielding behaviors Small-angle twist grain boundaries Atomistic simulation
Indexed BySCI
Language英语
WOS IDWOS:000498062100011
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80581
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Xia, Z. Y.,Zhang, Z. J.,Yan, J. X.,et al. General yield behaviors of the {110} hexagonal dislocation networks in body centered cubic metal molybdenum[J]. COMPUTATIONAL MATERIALS SCIENCE,2019,170.
APA Xia, Z. Y.,Zhang, Z. J.,Yan, J. X.,Yang, J. B.,&Zhang, Z. F..(2019).General yield behaviors of the {110} hexagonal dislocation networks in body centered cubic metal molybdenum.COMPUTATIONAL MATERIALS SCIENCE,170.
MLA Xia, Z. Y.,et al."General yield behaviors of the {110} hexagonal dislocation networks in body centered cubic metal molybdenum".COMPUTATIONAL MATERIALS SCIENCE 170(2019).
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