Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Kyoungdoc Kim"'
Publikováno v:
Journal of Materials Research and Technology, Vol 31, Iss , Pp 3741-3748 (2024)
This study investigates the effect of minor Li addition on the solute clustering and thermal stability of precipitates in artificially aged Al–Mg–Si–Cu (AA6061) alloys. Li addition hinders the initial changes in hardness and electrical conducti
Externí odkaz:
https://doaj.org/article/1c1b3340b35d47c6b9aab85f329b6410
Autor:
Stephen Yeboah Boakye, Kyoungdoc Kim, Jaekook Kim, Jong-Sook Lee, Jungmuk Choi, Sam Yaw Anaman, Hoon-Hwe Cho
Publikováno v:
Journal of Materials Research and Technology, Vol 25, Iss , Pp 354-368 (2023)
The microstructural effects of a Cr-modified Ti–6Al–4V (Ti64) alloy on the mechanical, electrochemical and stress corrosion cracking properties were studied. With the aid of thermodynamic calculations and microstructural characterizations, Ti64
Externí odkaz:
https://doaj.org/article/b8f59dba5da4400eb19b0f087884e72d
Autor:
Kyoungdoc Kim, Paul J. M. Smeets, Cesar Villa, Kun He, Roberto dos Reis, Xiaobing Hu, Stephanie M. Ribet, Vinayak P. Dravid, Peter W. Voorhees
Publikováno v:
Nano Letters. 21:6813-6819
Copper (Cu) is a catalyst broadly used in industry for hydrogenation of carbon dioxide, which has broad implications for environmental sustainability. An accurate understanding of the degeneration behavior of Cu catalysts under operando conditions is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29d6b5d15e3967eb75f3c6c178bb4f91
https://doi.org/10.1021/acs.nanolett.1c01592
https://doi.org/10.1021/acs.nanolett.1c01592
Autor:
Kun, He, Kyoungdoc, Kim, Cesar Jared, Villa, Stephanie M, Ribet, Paul, Smeets, Roberto Dos, Reis, Peter W, Voorhees, Xiaobing, Hu, Vinayak P, Dravid
Publikováno v:
Nano letters. 21(16)
Copper (Cu) is a catalyst broadly used in industry for hydrogenation of carbon dioxide, which has broad implications for environmental sustainability. An accurate understanding of the degeneration behavior of Cu catalysts under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::90127f743e70391309cc4d2d541dfc65
https://pubmed.ncbi.nlm.nih.gov/34379413
https://pubmed.ncbi.nlm.nih.gov/34379413
Publikováno v:
Scripta Materialia. 159:99-103
Designing low-energy interface structures is crucial in growth and coarsening studies of Al2Cu (θ′) precipitates. Given new experimental insights into the θ′/Al system, we use Density Functional Theory (DFT) calculations to investigate the ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9dd820542c9c437fc367dd3f718d388
https://doi.org/10.1016/j.scriptamat.2018.09.018
https://doi.org/10.1016/j.scriptamat.2018.09.018
Autor:
Kyoungdoc Kim, Sung Il Baik, Michael J. Walker, Gregory B. Olson, Peter W. Voorhees, Bobel Andrew C
Publikováno v:
Materials Science and Engineering: A. 735:318-323
Here, we design thermally stable microstructures of Al3Cu2Mg9Si7 (Q) precipitates based on commercial aluminum alloy (AS7GU) for automotive applications utilizing low-diffusivity solutes in aluminum. We find that the newly developed alloys show a ~ 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff37408395c20b98017f18818e573ba9
https://doi.org/10.1016/j.msea.2018.08.059
https://doi.org/10.1016/j.msea.2018.08.059
Autor:
Bi Cheng Zhou, Chris Wolverton, Bobel Andrew C, Gregory B. Olson, Vuk Brajuskovic, Kyoungdoc Kim, Michael J. Walker
Publikováno v:
Acta Materialia. 154:207-219
The compound Al3Cu2Mg9Si7, is known as the Q-phase and forms as a thermodynamically stable precipitate during aging in the quaternary Al-Cu-Mg-Si system. We perform atomic-scale density functional theory (DFT) calculations of defect properties, solut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f6ab0b13d225d7a06b251fd2eb928c0
https://doi.org/10.1016/j.actamat.2018.05.031
https://doi.org/10.1016/j.actamat.2018.05.031
Autor:
Peter W. Voorhees, Kyoungdoc Kim
Publikováno v:
Acta Materialia. 152:327-337
We propose a general theory of Ostwald ripening for prolate spheroidal particles in a nonideal nondilute multicomponent alloy. The diffusion problem of a growing or shrinking particle is solved using prolate spheroidal coordinates under the assumptio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d47ce40fc4a3d525ccfafcbf3764c9d6
https://doi.org/10.1016/j.actamat.2018.04.041
https://doi.org/10.1016/j.actamat.2018.04.041
Publikováno v:
Acta Materialia. 145:337-346
Aluminum-lithium-copper alloys have a low density, high elastic modulus and high specific strength. Due to this combination of properties, alloys strengthened with the ternary (Al-Li-Cu) T 1 phase have attracted a great deal of interest especially in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d64f46b4b6594195f556d873e39791a
https://doi.org/10.1016/j.actamat.2017.12.013
https://doi.org/10.1016/j.actamat.2017.12.013
Publikováno v:
Scripta Materialia. 202:114009
We recently proposed a new, low-energy atomic structure of the Al2CuLi (T1) phase using first-principles calculations based on density functional theory [Acta Mater. 145 (2018) 337-346]. Here, we refine the Li positions in the proposed T1 structure a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32fb266147c8bdfce5e27e939c94ea12
https://doi.org/10.1016/j.scriptamat.2021.114009
https://doi.org/10.1016/j.scriptamat.2021.114009