TY - JOUR
T1 - Ion irradiation induced nanocrystal formation in amorphous Zr55Cu30Al10Ni5 alloy
AU - Carter, Jesse
AU - Fu, E. G.
AU - Martin, Michael
AU - Xie, Guoqiang
AU - Zhang, X.
AU - Wang, Y. Q.
AU - Wijesundera, D.
AU - Wang, X. M.
AU - Chu, Wei Kan
AU - McDeavitt, Sean M.
AU - Shao, Lin
N1 - Funding Information:
This work was financially supported by the University Embryonic Technologies Program from Siemens Power Generation Emerging Technologies. L. Shao would like to acknowledge the support from the NRC Early Career Development Grant. X. Zhang acknowledges the support by DOE under grant number DE-FC07-05ID14657. This work was performed, in part, at the Center for Integrated Nanotechnologies, a DOE-supported user facility. The University of Houston group is supported from the State of Texas through Texas Center for Superconductivity at University of Houston, and through the DOE under Grant Number DE-FG02-05ER46208.
PY - 2009/9/1
Y1 - 2009/9/1
N2 - Ion irradiation can be used to induce partial crystallization in metallic glasses to improve their surface properties. We investigated the microstructural changes in ribbon Zr55Cu30Al10Ni5 metallic glass after 1 MeV Cu-ion irradiation at room temperature, to a fluence of 1.0 × 1016 cm-2. In contrast to a recent report by others that there was no irradiation induced crystallization in the same alloy [S. Nagata, S. Higashi, B. Tsuchiya, K. Toh, T. Shikama, K. Takahiro, K. Ozaki, K. Kawatusra, S. Yamamoto, A. Inouye, Nucl. Instr. and Meth. B 257 (2007) 420], we have observed nanocrystals in the as-irradiated samples. Two groups of nanocrystals, one with diameters of 5-10 nm and another with diameters of 50-100 nm are observed by using high resolution transmission electron microscopy. Experimentally measured planar spacings (d-values) agree with the expectations for Cu10Zr7, NiZr2 and CuZr2 phases. We further discussed the possibility to form a substitutional intermetallic (NixCu1-x)Zr2 phase.
AB - Ion irradiation can be used to induce partial crystallization in metallic glasses to improve their surface properties. We investigated the microstructural changes in ribbon Zr55Cu30Al10Ni5 metallic glass after 1 MeV Cu-ion irradiation at room temperature, to a fluence of 1.0 × 1016 cm-2. In contrast to a recent report by others that there was no irradiation induced crystallization in the same alloy [S. Nagata, S. Higashi, B. Tsuchiya, K. Toh, T. Shikama, K. Takahiro, K. Ozaki, K. Kawatusra, S. Yamamoto, A. Inouye, Nucl. Instr. and Meth. B 257 (2007) 420], we have observed nanocrystals in the as-irradiated samples. Two groups of nanocrystals, one with diameters of 5-10 nm and another with diameters of 50-100 nm are observed by using high resolution transmission electron microscopy. Experimentally measured planar spacings (d-values) agree with the expectations for Cu10Zr7, NiZr2 and CuZr2 phases. We further discussed the possibility to form a substitutional intermetallic (NixCu1-x)Zr2 phase.
KW - Crystallization
KW - Ion irradiation
KW - Metallic glass
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U2 - 10.1016/j.nimb.2009.05.068
DO - 10.1016/j.nimb.2009.05.068
M3 - Article
AN - SCOPUS:68949143230
SN - 0168-583X
VL - 267
SP - 2827
EP - 2831
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 17
ER -