Densification and heterogeneity enhancement of Fe-based metallic glass under local plastic flow

Jiang Shuang-Shuang; Zhu Li; Liu Si-Nan; Yang Zhan-Zhan; Lan Si; Wang Yin-Gang

doi:10.7498/aps.71.20211304

Abstract

The atomic-scale structure and concomitant mechanical property evolution of a ribbon-shaped Fe₇₈Si₉B₁₃ metallic glass after local plastic flow are investigated. By using abrasive papers as a medium to transport the pressure, the equivalent pressure on the ribbon surface is sufficiently magnified. Multiple shear bands pervading along their surface are generated simultaneously after deformation. The densification processes triggered by the cooperative atomic rearrangements in the short and medium-range are revealed by analyzing the synchrotron diffraction patterns in reciprocal space and real space. Meanwhile, the local plastic flow enhances the structural heterogeneity. In contrast to the strain-softening under uniaxial loading, these structural changes contribute to the improvement of resistance to subsequent deformation. As a result, the Vickers hardness of the deformed Fe₇₈Si₉B₁₃ metallic glass increases compared with the undeformed sample, manifesting a local strain-hardening behavior.

Keywords:

Authors and contacts

1.
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
2.
Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Corresponding author: Wang Yin-Gang, yingang.wang@nuaa.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 51571115, 51871120) and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China

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References

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Cited By

图 1 (a) Fe₇₈Si₉B₁₃非晶带施加载荷的示意图; (b) 砂纸的金相显微图像; (c) 样品变形前后的光学图片

Figure 1. (a) Schematic diagram for the stress applying procedure of the Fe₇₈Si₉B₁₃ amorphous ribbon; (b) metallographic microscope images of the abrasive paper; (c) optical picture of samples before and after deformation.

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图 2 (a)—(c) Fe₇₈Si₉B₁₃金属玻璃在约5, 15和35 MPa载荷下的金相显微图像; (d)—(f) SEM图像, 插图为高倍放大的SEM图像

Figure 2. (a)–(c) Metallographic microscope images and (d)–(f) SEM images of the Fe₇₈Si₉B₁₃ metallic glasses subjected to about 5, 15, and 35 MPa, respectively. The insets are the SEM images with high magnification.

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图 3 (a) 样品变形前后的DSC曲线, 插图是样品T_c附近的放大图; (b) 不同样品总的释放焓的比较; (c) 各样品上所对应第二峰的位置

Figure 3. (a) DSC curves of the samples before and after deformation, the inset is the enlargement near the T_c of samples; (b) comparison of the total enthalpy release on various samples; (c) the position of the corresponding second peak on various samples.

DownLoad: Full-Size Img PowerPoint

图 4 (a) Fe₇₈Si₉B₁₃金属玻璃的结构因子S(q), 插图是第一峰附近的局部放大曲线(数据沿S(q)轴进行了移动); (b) S(q)中第一个峰的峰位和FWHM; (c) Fe₇₈Si₉B₁₃金属玻璃的约化对分布函数G(r), 其中虚线标记了特征峰的位置; (d) 通过减去未变形样品的数据得到的G(r)的差异; (e)获取随方位角变化的衍射图谱的示意图; (f) 由pseudo-Voigt函数拟合S(q)中第一个峰的峰位与方位角的函数, 插图是由正弦函数拟合得出的振幅

Figure 4. (a) Structure factor S(q) of the Fe₇₈Si₉B₁₃ metallic glasses, and the inset is the enlarged curves around the first peak (The data is shifted along S(q) axis for clarification); (b) peak position and FWHM of the first peak in S(q); (c) reduced pair distribution function G(r) of the Fe₇₈Si₉B₁₃ metallic glasses, in which the dashed lines label the positions of characteristic peaks; (d) the difference in G(r) obtained by subtracting the data of the undeformed sample as a reference; (e) schematic diagram illustrating the acquisition of angular-dependent diffraction patterns; (f) position of the first peak in S(q) obtained from pseudo-Voigt function fitting as a function of angle, and the inset is the amplitude of oscillation derived from the sinusoidal function fitting.

DownLoad: Full-Size Img PowerPoint

图 5 (a) 由G(r)曲线峰位置的相对位移确定的不同压力下Fe₇₈Si₉B₁₃金属玻璃的体积应变ε; (b) ε随压力的变化

Figure 5. (a) Volume strain ε of Fe₇₈Si₉B₁₃ metallic glasses at various pressures determined from the relative displacement of the peak position of the G(r); (b) the variation of ε with pressure.

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图 6 Fe₇₈Si₉B₁₃金属玻璃未变形(a)和变形(b)的HRTEM图像, 插图是相对应的FFT模式, 黄色的圆圈标出了低亮度的区域; Fe₇₈Si₉B₁₃金属玻璃未变形(c)和变形(d)的环形暗场扫描TEM (ADF-STEM)图像

Figure 6. HRTEM images of the undeformed (a) and deformed (b) Fe₇₈Si₉B₁₃ metallic glasses. The insets are the corresponding FFT patterns, and the yellow circles mark the regions with low brightness. Annular dark-field scanning TEM (ADF-STEM) images of the undeformed (c) and deformed (d) Fe₇₈Si₉B₁₃ metallic glasses.

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图 7 未变形(a)和变形(c) Fe₇₈Si₉B₁₃金属玻璃压痕的金相显微镜图像; 未变形FSB-0试样(b)和FSB-35试样(d)的维氏硬度等值线图

Figure 7. Metallographic microscope images of the indentations for the undeformed (a) and deformed (c) Fe₇₈Si₉B₁₃ metallic glasses; Vickers hardness contour plots of the undeformed FSB-0 sample (b) and the FSB-35 sample (d).

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图 8 施加压力前后Fe₇₈Si₉B₁₃金属玻璃的原子结构示意图

Figure 8. Schematic of atomic structure for Fe₇₈Si₉B₁₃ metallic glass before and after applying pressure.

DownLoad: Full-Size Img PowerPoint

[1]	Greer A L, Cheng Y Q, Ma E 2013 Mat. Sci. Eng. R 74 71 Google Scholar
[2]	Pan J, Chen Q, Liu L, Li Y 2011 Acta Mater. 59 5146 Google Scholar
[3]	Jang D, Greer J R 2010 Nat. Mater. 9 215 Google Scholar
[4]	Pan J, Ivanov Y P, Zhou W H, Li Y, Greer A L 2020 Nature 578 559 Google Scholar
[5]	Wang T, Si J J, Wu Y D, Lv K, Liu Y H, Hui X D 2018 Scripta Mater. 150 106 Google Scholar
[6]	Spaepen F 1977 Acta Metall. 25 407 Google Scholar
[7]	Dmowski W, Yokoyama Y, Chuang A, Ren Y, Umemoto M, Tsuchiya K, Inoue A, Egami T 2010 Acta Mater. 58 429 Google Scholar
[8]	Rosner H, Peterlechner M, Kubel C, Schmidt V, Wilde G 2014 Ultramicroscopy 142 1 Google Scholar
[9]	Shen L Q, Luo P, Hu Y C, Bai H Y, Sun Y H, Sun B A, Liu Y H, Wang W H 2018 Nat. Commun. 9 4414 Google Scholar
[10]	Shahabi H S, Scudino S, Kaban I, Stoica M, Escher B, Menzel S, Vaughan G B M, Kühn U, Eckert J 2016 Acta Mater. 111 187 Google Scholar
[11]	Ma E, Ding J 2016 Mater. Today 19 568 Google Scholar
[12]	Qiao J C, Wang Q, Pelletier J M, Kato H, Casalini R, Crespo D, Pineda E, Yao Y, Yang Y 2019 Prog. Mater. Sci. 104 250 Google Scholar
[13]	Cubuk E D, Ivancic R J S, Schoenholz S S, et al. 2017 Science 358 1033 Google Scholar
[14]	Wei D, Yang J, Jiang M Q, Wei B C, Wang Y J, Dai L H 2019 Phys. Rev. B 99 014115 Google Scholar
[15]	Zhu F, Song S X, Reddy K M, Hirata A, Chen M W 2018 Nat. Commun. 9 3965 Google Scholar
[16]	Li B S, Xie S H, Kruzic J J 2019 Acta Mater. 176 278 Google Scholar
[17]	Wakeda M, Saida J 2019 Sci. Technol. Adv. Mater. 20 632 Google Scholar
[18]	Kim H K, Ahn J P, Lee B J, Park K W, Lee J C 2018 Acta Mater. 157 209 Google Scholar
[19]	Luo L S, Wang B B, Dong F Y, Su Y Q, Guo E Y, Xu Y J, Wang M Y, Wang L, Yu J X, Ritchie R O, Guo J J, Fu H Z 2019 Acta Mater. 171 216 Google Scholar
[20]	Ebner C, Escher B, Gammer C, Eckert J, Pauly S, Rentenberger C 2018 Acta Mater. 160 147 Google Scholar
[21]	Bian X L, Zhao D, Kim J T, Sopu D, Wang G, Pippan R, Eckert J 2019 Mater. Sci. Eng. A 752 36 Google Scholar
[22]	Kovács Z, Schafler E, Kis V K, Szommer P J, Révész Á 2018 J. Non-Cryst. Solids 498 25 Google Scholar
[23]	Dai J, Wang Y G, Yang L, Xia G T, Zeng Q S, Lou H B 2017 Scripta Mater. 127 88 Google Scholar
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[32]	Dmowski W, Iwashita T, Chuang C P, Almer J, Egami T 2010 Phys. Rev. Lett. 105 205502 Google Scholar
[33]	Liu S N, Wang L F, Ge J C, Wu Z D, Ke Y B, Li Q, Sun B A, Feng T, Wu Y, Wang J T, Hahn H, Ren Y, Almer J D, Wang X L, Lan S 2020 Acta Mater. 200 42 Google Scholar
[34]	Taghvaei A H, Shahabi H S, Bednarčik J, Eckert J 2015 J. Appl. Phys. 117 044902 Google Scholar
[35]	Scudino S, Stoica M, Kaban I, Prashanth K G, Vaughan G B M, Eckert J 2015 J. Alloy. Compd. 639 465 Google Scholar
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[41]	Stolpe M, Kruzic J J, Busch R 2014 Acta Mater. 64 231 Google Scholar
[42]	Das J, Tang M B, Kim K B, Theissmann R, Baier F, Wang W H, Eckert J 2005 Phys. Rev. Lett. 94 205501 Google Scholar
[43]	Bhowmick R, Raghavan R, Chattopadhyay K, Ramamurty U 2006 Acta Mater. 54 4221 Google Scholar
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[45]	Küchemann S, Liu C Y, Dufresne E M, Shin J, Maaß R 2018 Phys. Rev. B 97 014204 Google Scholar

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