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Autor:
R.C. Pond, J.P. Hirth
Publikováno v:
Acta Materialia. 151:229-242
A model for the formation and growth of type II twins is described using the topological theory of interfacial defects and interface structures. A type I twin forms and grows to macroscopic dimensions by the generation and expansion of disconnection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6321eff6f5f9e782c3e4143b0b0cdbb
https://doi.org/10.1016/j.actamat.2018.03.014
https://doi.org/10.1016/j.actamat.2018.03.014
Publikováno v:
Progress in Materials Science. 83:417-471
The general topological model for interfacial defects is reviewed and expanded, and the role of these defects in the coupled shear - migration of interfaces is explored. We focus on twinning in hexagonal metals for many defect examples. The definitio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdf1450d2084fcecbdac78b69cb530d4
https://doi.org/10.1016/j.pmatsci.2016.07.003
https://doi.org/10.1016/j.pmatsci.2016.07.003
Autor:
J.P. Hirth, R.C. Pond
Publikováno v:
Materials Today: Proceedings. 2:S541-S544
At equilibrium the tensor strains and rotations produced by the network of dislocations in a semi-coherent interphase interface are equal and opposite to those arising from the coherent terraces. We express this condition using the Frank-Bilby equati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb96a4e995200595caede3763dcd7e08
https://doi.org/10.1016/j.matpr.2015.07.342
https://doi.org/10.1016/j.matpr.2015.07.342
Autor:
J.P. Hirth
Publikováno v:
Philosophical Magazine. 94:3177-3182
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::199e07ecbf84667d793dabdd36f04b21
https://doi.org/10.1080/14786435.2014.952255
https://doi.org/10.1080/14786435.2014.952255
Autor:
Sreekanth Akarapu, J.P. Hirth
Publikováno v:
Acta Materialia. 61:3621-3629
The complete fields for a double-ended dislocation pile-up, or equivalently a crack, are derived for the situation where there is a gradient in applied stress. The dislocation content is smeared into a continuous, infinitesimal distribution. The effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5c2e195134535dfc7cc12e581bb72cb
https://doi.org/10.1016/j.actamat.2013.02.049
https://doi.org/10.1016/j.actamat.2013.02.049
Publikováno v:
Progress in Materials Science. 58:749-823
The physical basis for the Frank–Bilby equation is considered. Dual descriptions in terms of interface physics and mechanics are introduced. Natural (NDP), commensurate (CDP) and rotated (RCDP) dichromatic patterns are introduced. Burgers vectors a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61a56fe0595167e9412475b1f95353c4
https://doi.org/10.1016/j.pmatsci.2012.10.002
https://doi.org/10.1016/j.pmatsci.2012.10.002
Publikováno v:
Materials Science Forum. 753:125-130
The structure of disconnections in symmetrical low- and high-angle [0001] tilt boundaries in an hcp metal are studied using atomic-scale simulation. Applied engineering strains cause such defects to move conservatively along the boundaries, producing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d8440f98c6b6a31d03d1490ae7e8dc3
https://doi.org/10.4028/www.scientific.net/msf.753.125
https://doi.org/10.4028/www.scientific.net/msf.753.125
Publikováno v:
Acta Materialia. 60:2007-2020
The mechanism of coupled migration and shear is studied in a range of [0 0 0 1] tilt boundaries in hexagonal close-packed metal using atomic-scale computer simulation. Symmetrical tilt boundaries spanning the low- and high-angle regimes and comprisin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d55b27514013ac2384b03fbf04793adf
https://doi.org/10.1016/j.actamat.2012.01.001
https://doi.org/10.1016/j.actamat.2012.01.001
Autor:
J.P. Hirth, R.C. Pond
Publikováno v:
Progress in Materials Science. 56:586-636
The role of disconnections and lattice-invariant deformation in displacive phase transformations is reviewed, particularly the defect structure of equilibrium habit planes, the mechanism of transformation, and the deformation accompanying growth. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89b2d5eb59bc9a8f986e0b9eda1857bb
https://doi.org/10.1016/j.pmatsci.2011.01.003
https://doi.org/10.1016/j.pmatsci.2011.01.003