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Local microstructure evolution at shear bands in metallic glasses with nanoscale phase separation
He, Jie; Kaban, Ivan; Mattern, Norbert; Song, Kaikai; Sun, Baoan; Zhao, Jiuzhou; Kim, Do Hyang; Eckert, Juergen; Greer, A. Lindsay; He, J (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.; He, J; Kaban, I (reprint author), IFW Dresden, Inst Complex Mat, POB 270116, D-01171 Dresden, Germany.; Kaban, I (reprint author), Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany.; Greer, AL (reprint author), Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England.; Greer, AL (reprint author), Tohoku Univ, WPI AIMR, Sendai, Miyagi 9808577, Japan.
2016-05-16
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号6
摘要At room temperature, plastic flow of metallic glasses (MGs) is sharply localized in shear bands, which are a key feature of the plastic deformation in MGs. Despite their clear importance and decades of study, the conditions for formation of shear bands, their structural evolution and multiplication mechanism are still under debate. In this work, we investigate the local conditions at shear bands in new phase-separated bulk MGs containing glassy nanospheres and exhibiting exceptional plasticity under compression. It is found that the glassy nanospheres within the shear band dissolve through mechanical mixing driven by the sharp strain localization there, while those nearby in the matrix coarsen by Ostwald ripening due to the increased atomic mobility. The experimental evidence demonstrates that there exists an affected zone around the shear band. This zone may arise from low-strain plastic deformation in the matrix between the bands. These results suggest that measured property changes originate not only from the shear bands themselves, but also from the affected zones in the adjacent matrix. This work sheds light on direct visualization of deformation-related effects, in particular increased atomic mobility, in the region around shear bands.
部门归属[he, jie ; zhao, jiuzhou] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [he, jie ; kaban, ivan ; mattern, norbert ; song, kaikai ; sun, baoan] ifw dresden, inst complex mat, pob 270116, d-01171 dresden, germany ; [kaban, ivan] tech univ dresden, inst mat sci, d-01062 dresden, germany ; [kim, do hyang] yonsei univ, ctr noncrystalline mat, dept met engn, seoul 120749, south korea ; [eckert, juergen] austrian acad sci, erich schmid inst mat sci, jahnstr 12, a-8700 leoben, austria ; [eckert, juergen] univ leoben, dept mat phys, jahnstr 12, a-8700 leoben, austria ; [greer, a. lindsay] univ cambridge, dept mat sci & met, cambridge cb3 0fs, england ; [greer, a. lindsay] tohoku univ, wpi aimr, sendai, miyagi 9808577, japan
学科领域Science & Technology - Other Topics
资助者Alexander von Humboldt Foundation; National Natural Science Foundation of China [51374194, 51574216]; Natural Science Foundation of Liaoning Province of China [2015020172]; German Federal Ministry of Education and Science [05K12OD1]; German Science Foundation under the Leibniz Program [EC 111/26-1]; European Research Council under the ERC Advanced Grant INTELHYB [ERC-2013-ADG-340025]; Global Research Laboratory Program of the Korean Ministry of Education, Science and Technology; Engineering and Physical Sciences Research Council (UK); World Premier International Research Center (WPI), MEXT, Japan
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75873
专题中国科学院金属研究所
通讯作者He, J (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.; He, J; Kaban, I (reprint author), IFW Dresden, Inst Complex Mat, POB 270116, D-01171 Dresden, Germany.; Kaban, I (reprint author), Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany.; Greer, AL (reprint author), Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England.; Greer, AL (reprint author), Tohoku Univ, WPI AIMR, Sendai, Miyagi 9808577, Japan.
推荐引用方式
GB/T 7714
He, Jie,Kaban, Ivan,Mattern, Norbert,et al. Local microstructure evolution at shear bands in metallic glasses with nanoscale phase separation[J]. SCIENTIFIC REPORTS,2016,6.
APA He, Jie.,Kaban, Ivan.,Mattern, Norbert.,Song, Kaikai.,Sun, Baoan.,...&Greer, AL .(2016).Local microstructure evolution at shear bands in metallic glasses with nanoscale phase separation.SCIENTIFIC REPORTS,6.
MLA He, Jie,et al."Local microstructure evolution at shear bands in metallic glasses with nanoscale phase separation".SCIENTIFIC REPORTS 6(2016).
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