000015366 001__ 15366
000015366 005__ 20161115100219.0
000015366 04107 $$aeng
000015366 046__ $$k2016-08-21
000015366 100__ $$aGuo, Ya-Fang
000015366 24500 $$aInvestigation on the size effect of twinning in HCP single crystals

000015366 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015366 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015366 506__ $$arestricted
000015366 520__ $$2eng$$aSummafy. inning is generally consider d to be the p imary deformation mechanism for hexag nal close-pac ed (hcp) met ls due to their limited slip systems. Recent microcompression experiments point to strong size ef ects indicatin that pyrami al slips can do inate in deformation under compression. In this work, olecular dynamics simulations are applied to investig te the deformation mechanis s of magnesium and titani In single cry tals under compression at he nanoscale. It is found t at pyramidal slip dominate the comp ession defor ation, which is consis ent with e perimental bservations on microcompression. We als present anal sis on the twinnability of a ideal hcp si gle crystal at the nanoscale. A criterion or deformation twinning is derived by considering the elastic lattice-rotation strain. his analysis gives an inter retation of size effects in def rmation twin ing, at the sa e time it provides an explanation for the so-called stren th differential effect.

000015366 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015366 653__ $$a

000015366 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015366 720__ $$aGuo, Ya-Fang
000015366 8560_ $$ffischerc@itam.cas.cz
000015366 8564_ $$s163233$$uhttps://invenio.itam.cas.cz/record/15366/files/TS.SM10-5.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 2516, code TS.SM10-5.05
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000015366 962__ $$r13812
000015366 980__ $$aPAPER