局部塑性变形下铁基金属玻璃的致密化和非均匀性增强

江双双; 朱力; 刘思楠; 杨詹詹; 兰司; 王寅岗

doi:10.7498/aps.71.20211304

摘要

本文研究了经局部塑性变形后, Fe₇₈Si₉B₁₃金属玻璃在原子尺度上的结构演变及其对合金显微硬度的影响. 借助砂纸作为传力的媒介, 充分放大了作用于带材表面上的等效压力, 发生塑性变形后合金表面产生了大量的剪切带. 基于倒空间和实空间的同步辐射X射线衍射分析, 在塑性变形后, 合金结构的致密度增大, 过剩自由体积被排出, 并由此揭示了Fe₇₈Si₉B₁₃金属玻璃在短程及中程尺度上原子协同重排行为. 结合高分辨透射电子显微镜观察的结果, Fe₇₈Si₉B₁₃金属玻璃在发生塑性变形后, 结构不均匀的程度将会加剧. 此外, 不同于单轴加载下金属玻璃的加工软化, Fe₇₈Si₉B₁₃金属玻璃在发生局部塑性变形后, 维氏硬度增大, 表现出局部的加工硬化行为. 从自由体积的角度看, 合金表面的大量剪切带可能是由于剪切带影响区域的重叠和交叉发生相互作用, 并加速原子迁移, 使自由体积湮灭的速率大于产生速率.

关键词:

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:

作者及机构信息

1.
南京航空航天大学材料科学与技术学院, 南京　211106

2.
南京理工大学材料科学与工程学院, 格莱特纳米科学研究所, 南京　210094

通信作者: 王寅岗, yingang.wang@nuaa.edu.cn

基金项目: 国家自然科学基金(批准号: 51571115, 51871120)和江苏高校优势学科建设工程项目资助的课题

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

文章全文 : translate this paragraph

参考文献

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施引文献

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

Fig. 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.

下载: 全尺寸图片幻灯片

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

Fig. 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.

下载: 全尺寸图片幻灯片

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

Fig. 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.

下载: 全尺寸图片幻灯片

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

Fig. 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.

下载: 全尺寸图片幻灯片

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

Fig. 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.

下载: 全尺寸图片幻灯片

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

Fig. 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.

下载: 全尺寸图片幻灯片

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

Fig. 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).

下载: 全尺寸图片幻灯片

图 8 施加压力前后Fe₇₈Si₉B₁₃金属玻璃的原子结构示意图

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

下载: 全尺寸图片幻灯片

[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
[24]	Wang J G, Hu Y C, Guan P F, Song K K, Wang L, Wang G, Pan Y, Sarac B, Eckert J 2017 Sci. Rep. 7 7076 Google Scholar
[25]	Taghvaei A H, Shirazifard N G, Ramasamy P, Bednarčik J, Eckert J 2018 J. Alloy. Compd. 748 553 Google Scholar
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[30]	Micoulaut M, Bauchy M 2013 Phys. Status Solidi B 250 976 Google Scholar
[31]	Wu Z W, Li M Z, Wang W H, Liu K X 2015 Nat. Commun. 6 6035 Google Scholar
[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
[36]	Chen Z Q, Huang L, Wang F, Huang P, Lu T J, Xu K W 2016 Mater. Design 109 179 Google Scholar
[37]	Zhu F, Hirata A, Liu P, Song S X, Tian Y, Han J H, Fujita T, Chen M W 2017 Phys. Rev. Lett. 119 215501 Google Scholar
[38]	Jaafari Z, Seifoddini A, Hasani S 2019 Metall. Mater. Trans. A 50 2875 Google Scholar
[39]	Sarac B, Ivanov Y P, Chuvilin A, Schoberl T, Stoica M, Zhang Z L, Eckert J 2018 Nat. Commun. 9 1333 Google Scholar
[40]	Wang Z T, Pan J, Li Y, Schuh C A 2013 Phys. Rev. Lett. 111 135504 Google Scholar
[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
[44]	Tong Y, Iwashita T, Dmowski W, Bei H, Yokoyama Y, Egami T 2015 Acta Mater. 86 240 Google Scholar
[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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局部塑性变形下铁基金属玻璃的致密化和非均匀性增强