Zobrazeno 1 - 10
of 210
pro vyhledávání: '"Robert H Wagoner"'
Autor:
Landon T Hansen, Jay D Carroll, Eric R Homer, Robert H Wagoner, Guowei Zhou, David T Fullwood
Publikováno v:
Microscopy and Microanalysis.
Geometrically necessary dislocations (GNDs) play a key role in accommodating strain incompatibility between neighboring grains in polycrystalline materials. One critical step toward accurately capturing GNDs in deformation models involves studying th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4484b9dc746e4165b66a225e0e99324e
https://doi.org/10.1093/micmic/ozad049
https://doi.org/10.1093/micmic/ozad049
Autor:
Guowei Zhou, Joshua Tsai, Tristan Russell, Ehsan Taghipour, Robert H Wagoner, David T Fullwood, Stephen R Niezgoda
Publikováno v:
Materialia. 28:101730
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::275693e4dbb4ba580fa85c2e39c8547a
https://doi.org/10.1016/j.mtla.2023.101730
https://doi.org/10.1016/j.mtla.2023.101730
Publikováno v:
Journal of Engineering Materials and Technology. 144
Yield point phenomena (YPP) are widely attributed to discrete dislocation locking by solute atmospheres. An alternate YPP mechanism was recently suggested by simulations of Ta single crystals without any influence of solutes or discrete dislocations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a717b9d935dbeb650377cdbfd15982
https://doi.org/10.1115/1.4051855
https://doi.org/10.1115/1.4051855
Autor:
Allan Harte, Ryan Sperry, João Quinta da Fonseca, David T. Fullwood, Robert H. Wagoner, Eric R. Homer
Publikováno v:
Sperry, R, Fullwood, D T, Harte, A, Fonseca, J Q D, Homer, E R & Wagoner, R H 2020, ' Slip band characteristics in the presence of grain boundaries in nickel-based superalloy ', Acta Materialia . https://doi.org/10.1016/j.actamat.2020.04.037
Shear strain profiles along slip bands in a modified Rolls-Royce nickel superalloy (RR1000) were analyzed for a tensile sample deformed by 2%. The strain increased with distance away from a grain boundary (GB), with maximum shear strain towards the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe5fec40743eb12b94ef865f441d5850
https://pure.manchester.ac.uk/ws/files/164550493/Manuscript.pdf
https://pure.manchester.ac.uk/ws/files/164550493/Manuscript.pdf
Autor:
Dayong Li, Lei Shi, Shichao Ding, Hua Xiao, Robert H. Wagoner, Shuhui Li, Yaguang Li, Yong Sun, Hyuk Jong Bong
Publikováno v:
International Journal of Mechanical Sciences. 135:279-293
Advanced high strength steels (AHSS) pose great challenges to sheet metal forming processes in vehicle components manufacturing with their increasing high strength and surface hardness. Chain-die forming is a recently proposed manufacturing method al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9322cf671bc055f3b3e0f788a1e2f148
https://doi.org/10.1016/j.ijmecsci.2017.11.034
https://doi.org/10.1016/j.ijmecsci.2017.11.034
Autor:
Myoung-Gyu Lee, Hyuk Jong Bong, Robert H. Wagoner, Eric R. Homer, Hojun Lim, David T. Fullwood
Publikováno v:
Materials Science and Engineering: A. 695:101-111
A “bottom-up” representative volume element (RVE) for a dual phase steel was constructed based on measured microstructural properties (“microproperties”). This differs from the common procedure of inferring hypothetical microproperties by fit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::779bfbb8d0e221e1c2e631443f154f50
https://doi.org/10.1016/j.msea.2017.04.032
https://doi.org/10.1016/j.msea.2017.04.032
Publikováno v:
Acta Materialia. 124:588-597
Grain boundary dislocation nucleation is simulated in a Nickel bicrystal with Σ21b (211)/(211) grain boundaries. Using molecular dynamics, 386 different triaxial stress states are examined for their effect on dislocation nucleation on different slip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c8b20af5c6cd9f211369fab3308bd68
https://doi.org/10.1016/j.actamat.2016.11.005
https://doi.org/10.1016/j.actamat.2016.11.005
Publikováno v:
Materials Science and Engineering: A. 684:353-372
Wrought Al-Ge-Si alloys were designed and produced to ensure dislocation bypass strengthening (“hard pin” precipitates) without significant precipitate cutting/shearing (“soft pin” precipitates). These unusual alloys were processed from the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17a38cf7dca9ac125cbf22c77fa353e4
https://doi.org/10.1016/j.msea.2016.12.020
https://doi.org/10.1016/j.msea.2016.12.020
It is well known that grain boundaries (GBs) have a strong influence on mechanical properties of polycrystalline materials. Not as well-known is how different GBs interact with dislocations to influence dislocation movement. This work presents a mole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fb0a5cf22f1d1f6f25e6e4a1c3c5ee8
Autor:
Robert H. Wagoner, Dayong Li
Publikováno v:
Acta Materialia. 206:116625
Recent reports in the literature identified pre-yield stress-strain nonlinearity and hysteresis (anelasticity) as occurring in metals at virtually all stresses. These observations raise foundational questions about metal deformation. Does a critical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fa3000f57fc6f307e284898fc3e43b4
https://doi.org/10.1016/j.actamat.2021.116625
https://doi.org/10.1016/j.actamat.2021.116625