Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Daniel Sopu"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-11 (2024)
Abstract Capturing a shear band in a metallic glass during its propagation experimentally is very challenging. Shear bands are very narrow but extend rapidly over macroscopic distances, therefore, characterization of large areas at high magnification
Externí odkaz:
https://doaj.org/article/d49fe65b8fdc4f5abaf23f5955c0e031
Autor:
Daniel Şopu, Florian Spieckermann, Xilei Bian, Simon Fellner, Jonathan Wright, Megan Cordill, Christoph Gammer, Gang Wang, Mihai Stoica, Jürgen Eckert
Publikováno v:
NPG Asia Materials, Vol 15, Iss 1, Pp 1-9 (2023)
Abstract Residual stress engineering is widely used in the design of new advanced lightweight materials. For metallic glasses, attention has been given to structural changes and rejuvenation processes. High-energy scanning X-ray diffraction strain ma
Externí odkaz:
https://doaj.org/article/ed79f86d21484f4f8be484c32def726f
Autor:
Shunli Zhao, Bin Jiang, Kaikai Song, Xiaoming Liu, Wenyu Wang, Dekun Si, Jilei Zhang, Xiangyan Chen, Changshan Zhou, Pingping Liu, Dong Chen, Zequn Zhang, Parthiban Ramasamy, Junlei Tang, Wenquan Lv, Konda Gokuldoss Prashanth, Daniel Şopu, Jürgen Eckert
Publikováno v:
Materials & Design, Vol 238, Iss , Pp 112634- (2024)
High-entropy alloys (HEAs) have attracted considerable attention for their exceptional microstructures and properties. Discovering new HEAs with desirable properties is crucial, but traditional design methods are laborious and time-consuming. Fortuna
Externí odkaz:
https://doaj.org/article/f45e859fca784cbfb61a5c5d456178c4
Publikováno v:
Journal of Materials Research and Technology, Vol 24, Iss , Pp 4177-4189 (2023)
Voids are probably the most widely studied type of manufacturing defects since they are often formed during material processing. In this paper, the fracture and plastic deformation of Cu/Cu64Zr36 crystalline/amorphous composites with different void l
Externí odkaz:
https://doaj.org/article/d8a4249aff684877a54e593d529b23c0
Autor:
Xudong Yuan, Zequn Zhang, Qingwei Gao, Li Zhou, Kaikai Song, Xiaoyu Zou, Daniel Şopu, Lina Hu, Baoan Sun, Jürgen Eckert
Publikováno v:
Journal of Materials Research and Technology, Vol 21, Iss , Pp 1490-1506 (2022)
Recent investigations have demonstrated that the plasticity of bulk metallic glasses (BMGs) at room temperature can be improved by artificially introducing both macroscopic and microscopic defects. In this work, both surface grooves and multiple shea
Externí odkaz:
https://doaj.org/article/69f3312a226d42ccb16962e8bce8d663
Publikováno v:
Materials, Vol 14, Iss 11, p 2756 (2021)
Amorphous/crystalline nanolaminate composites have aroused extensive research interest because of their high strength and good plasticity. In this paper, the nanoindentation behavior of Cu64Zr36/Cu amorphous/crystalline nanolaminates (ACNLs) is inves
Externí odkaz:
https://doaj.org/article/6fe9651b39034b3e85c9d9cdfd85347d
Autor:
Kaikai Song, Yongjiang Huang, Ran Li, Jichao Qiao, Zhi Wang, Konda Gokuldoss Prashanth, Daniel Sopu
Publikováno v:
Frontiers in Materials, Vol 9 (2022)
Externí odkaz:
https://doaj.org/article/c930e92c366641c0abd88781065800a6
Autor:
Baran Sarac, Daniel Sopu, Eunmi Park, Julia Kristin Hufenbach, Steffen Oswald, Mihai Stoica, Jürgen Eckert
Publikováno v:
Metals, Vol 5, Iss 2, Pp 920-933 (2015)
The intrinsic properties of advanced alloy systems can be altered by changing their microstructural features. Here, we present a highly efficient method to produce and characterize structures with systematically-designed pores embedded inside. The fa
Externí odkaz:
https://doaj.org/article/772e7195daeb453c8a9585008a317812
Autor:
Florian Spieckermann, Daniel Şopu, Viktor Soprunyuk, Michael B. Kerber, Jozef Bednarčík, Alexander Schökel, Amir Rezvan, Sergey Ketov, Baran Sarac, Erhard Schafler, Jürgen Eckert
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Understanding of the atomic-scale mechanisms of rejuvenation of bulk metallic glass still remains unclear. Here, using configurational entropy derived from X-ray experiments, authors show a clear picture of the relaxation process during annealing of
Externí odkaz:
https://doaj.org/article/bd4d8b69a279459686359d132420d971
Publikováno v:
Materials, Vol 15, Iss 5, p 1702 (2022)
One way to rejuvenate metallic glasses is to increase their free volume. Here, by randomly removing atoms from the glass matrix, free volume is homogeneously generated in metallic glasses, and glassy states with different degrees of rejuvenation are
Externí odkaz:
https://doaj.org/article/2007abe97d1f43dcb5db42d37c7f8aee