Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Gihan Velisa"'
Autor:
Caixia Wang, Ruixing Sheng, Dawei Zhou, Weidong Li, Shuying Chen, Fanchao Meng, Gihan Velisa, Daiyi Chao, Liang Jiang, Peter K. Liaw, Yang Tong
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 3914-3922 (2023)
The development of robust alloys capable of maintaining high strength and ductility at cryogenic temperatures has been a long-sought goal, particularly for load-bearing applications in extremely low-temperature environments. In this study, we reporte
Externí odkaz:
https://doaj.org/article/5e7fea73b9b64d0bb231b922d1fdb748
Autor:
Cristina C. Gheorghiu, Aurelia Ionescu, Maria-Iulia Zai, Decebal Iancu, Ion Burducea, Gihan Velisa, Bogdan S. Vasile, Adelina C. Ianculescu, Mariana Bobeica, Daniel Popa, Victor Leca
Publikováno v:
Materials, Vol 15, Iss 17, p 6134 (2022)
The use of Fe films as multi-element targets in space radiation experiments with high-intensity ultrashort laser pulses requires a surface structure that can enhance the laser energy absorption on target, as well as a low concentration and uniform di
Externí odkaz:
https://doaj.org/article/f304da12bb7a4922a6d87537619d1ecb
Autor:
Chenyang Lu, Taini Yang, Ke Jin, Gihan Velisa, Pengyuan Xiu, Miao Song, Qing Peng, Fei Gao, Yanwen Zhang, Hongbin Bei, William J. Weber, Lumin Wang
Publikováno v:
Materials Research Letters, Vol 6, Iss 10, Pp 584-591 (2018)
The role of dislocations on ion irradiation-induced void formation is studied in a high-entropy alloy (HEA) NiCoFeCrPd. Despite previous observations that show high-entropy alloys are swelling resistant due to a high defect recombination rate, the sw
Externí odkaz:
https://doaj.org/article/2df2ad217b49409e9268aa076989427c
Autor:
Mohammad W. Ullah, Haizhou Xue, Gihan Velisa, Ke Jin, Hongbin Bei, William J. Weber, Yanwen Zhang
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
Abstract Single-phase concentrated solid-solution alloys (SP-CSAs) have recently gained unprecedented attention due to their promising properties. To understand effects of alloying elements on irradiation-induced defect production, recombination and
Externí odkaz:
https://doaj.org/article/bb1b9300bd6348a7beacaaa495505217
Autor:
Flyura Djurabekova, Kai Nordlund, Gihan Velisa, Hongbin Bei, William J. Weber, Ilja Makkonen, F. Granberg, Haizhou Xue, Filip Tuomisto, Yanwen Zhang, Janne Heikinheimo
Publikováno v:
Tuomisto, F, Makkonen, I, Heikinheimo, J, Granberg, F, Djurabekova, F, Nordlund, K, Velisa, G, Bei, H, Xue, H, Weber, W J & Zhang, Y 2020, ' Segregation of Ni at early stages of radiation damage in NiCoFeCr solid solution alloys ', Acta Materialia, vol. 196, pp. 44-51 . https://doi.org/10.1016/j.actamat.2020.06.024
Acta Materialia
Acta Materialia
Defect evolution under irradiation is investigated in a set of single-phase concentrated solid solution alloys (SP-CSAs) containing Ni with Co, Fe and/or Cr. We show that atomic segregation of Ni takes place already at very early stages of radiation
Autor:
Gihan Velisa, Chenyang Lu, Yanwen Zhang, William J. Weber, Ke Jin, Hongbin Bei, Zhe Fan, Lumin Wang
Publikováno v:
Journal of Nuclear Materials. 525:92-101
To better understand defect structure and the evolution of irradiation-induced damage in single crystal Ni, in situ Rutherford backscattering spectroscopy in channeling geometry (RBS/C) is performed along the , , and axes with different probing beam
Autor:
Clara Grygiel, Eva Zarkadoula, Yanwen Zhang, Decebal Iancu, Boopathy Kombaiah, Maria Diana Mihai, Isabelle Monnet, Gihan Velisa, William J. Weber
Publikováno v:
Journal of Physics D: Applied Physics
Journal of Physics D: Applied Physics, 2021, 54 (37), pp.375302. ⟨10.1088/1361-6463/ac0b11⟩
Journal of Physics D: Applied Physics, 2021, 54 (37), pp.375302. ⟨10.1088/1361-6463/ac0b11⟩
International audience; The synergistic effect of nuclear (Sn) and electronic (Se) energy loss observed in some ABO3 perovskites has attracted considerable attention due to the real possibility to modify various near-surface properties, such as the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1ea1b4eaa7fb8fef656f0b738c93e5a
https://hal.science/hal-03666345
https://hal.science/hal-03666345
Autor:
Gihan Velisa, Yanwen Zhang, Pengyuan Xiu, William J. Weber, Chenyang Lu, Ke Jin, Qing Peng, Fei Gao, Hongbin Bei, Lumin Wang, Tai ni Yang
Publikováno v:
Journal of Nuclear Materials. 524:60-66
Medium entropy alloy NiCoCr draws great attention due to its excellent strength-ductility trade-off mechanical behavior. Its irradiation behavior at elevated temperatures has been investigated using ion beam irradiation in a temperature range of 420
Autor:
Gihan Velisa, William J. Weber, Miguel L. Crespillo, Ke Jin, Yanwen Zhang, Zhe Fan, Hongbin Bei
Publikováno v:
Journal of Nuclear Materials. 519:1-9
Temperature significantly affects defect migration and evolution in irradiated materials. However, the effects of temperature on defect evolution in concentrated solid-solution alloys (CSAs), including high entropy alloys, are not well understood, de
Autor:
Yanwen Zhang, Haizhou Xue, Gihan Velisa, Taini Yang, Hongbin Bei, William J. Weber, Lumin Wang, Ke Jin
Publikováno v:
Journal of Nuclear Materials. 517:9-16
Ion channeling is a powerful quantitative technique for studying ion-irradiation induced defect evolution in single crystalline materials. An iterative procedure to determine dechanneling yields has been developed for decades, serving as a major meth