Severe deformation-induced microstructural heterogeneities in Cu64Zr36 metallic glass
Severe deformation-induced microstructural heterogeneities in Cu64Zr36 metallic glass
复制标题
Cu64Zr36 金属玻璃中严重变形引起的微观结构不均匀性
DOI:
10.1088/1361-651x/ac7c82
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发表时间:
2022-06
影响因子:
1.8
通讯作者:
Wang Limin
中科院分区:
文献类型:
--
作者:
Lu Xiaoqian;Feng Shidong;Li Lin;Zhang Yanhui;Wang Xiaoying;Li Zijing;Wang Limin
Abstract. Deformation-induced rejuvenation is a promising strategy to improve the macroscopic plasticity of metallic glasses (MGs). Here, molecular dynamics simulations are performed to investigate the rejuvenated MGs’ atomic structure and mechanical behavior with high-pressure torsion (HPT) processing. The HPT induces the formation of soft and hard regions in MGs, which dramatically improves the microstructural heterogeneity. Potential energy, pair distribution function, short-range order, medium-range order, and vibrational behavior in HPT-deformed MGs are characterized. The microstructure of soft regions similar to the configuration slightly above the glass transition temperature can be adjusted by torsion angle, ultimately controlling the transformation of MGs from brittleness to ductility. These findings provide valuable guidelines for the design of MGs with enhanced deformability.
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影响因子:
3.2
作者:
X. Yuan;D. Şopu;F. Moitzi;K.K. Song;J. Eckert
通讯作者:
J. Eckert
影响因子:
10.9
作者:
Wu Y.;Wang H.;Liu X. J.;Chen X. H.;Hui X. D.;Zhang Y.;Lu Z. P.
通讯作者:
Lu Z. P.
影响因子:
4.4
作者:
Wang Tuo;Ma Xu;Chen Yinghong;Qiao Jichao;Xie Lei;Li Qiang
通讯作者:
Li Qiang
DOI:
10.1088/1361-651x/abbd2c
发表时间:
2020-10
影响因子:
1.8
作者:
Xiaoling Zhou;Longqi Wang;CHANG QING CHEN
通讯作者:
CHANG QING CHEN
DOI:
10.1016/0001-6160(79)90055-5
发表时间:
1979-01-01
期刊:
ACTA METALLURGICA
影响因子:
--
作者:
ARGON, AS
通讯作者:
ARGON, AS