Size-dependent to size-independent transition in creep of single crystalline Cu micropillars

被引：1
|
作者：
Liu, Ying [1 ,2 ,3 ]
Liu, Wenbin [1 ,2 ,3 ]
Yu, Long [1 ]
Sui, Haonan [1 ,2 ,3 ]
Cheng, Yangyang [1 ]
Duan, Huiling [1 ,2 ,3 ]
机构：
[1] Peking Univ, State Key Lab Turbulence & Complex Syst, Dept Mech & Engn Sci, BIC ESAT,Coll Engn, Beijing 100871, Peoples R China
[2] Peking Univ, HEDPS, CAPT, Beijing 100871, Peoples R China
[3] Peking Univ, IFSA Collaborat Innovat Ctr MoE, Beijing 100871, Peoples R China
来源：
EXTREME MECHANICS LETTERS | 2022年 / 56卷
基金：
中国国家自然科学基金;
关键词：
Micromechanical test; Creep; Transition behavior; Competition mechanism; BCC METALS; DISLOCATION; PLASTICITY; NICKEL; DEFORMATION; MODEL; FLOW; MECHANISMS; STRENGTH; PILLARS;
D O I：
10.1016/j.eml.2022.101843
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Micromechanical tests are performed to investigate the sample size effects on creep behavior of single crystalline Cu micropillars at room temperature. We report a transition from size-dependent to size -independent creep, where the transition size decreases with increasing holding stress. Furthermore, we find that the stress-related transition from size-dependent to size-independent creep can be explained by the competition between thermally-activated dislocation generation from sources and thermally -activated dislocation motion. Based on this competition mechanism, a quantitative model is established to further formulate the transition, where the model predictions agree well with the experimental results. (C) 2022 Elsevier Ltd. All rights reserved.
引用
收藏
页数：8
相关论文
共 50 条
  • [31] A modified single-arm source model for the size-dependent strain-hardening behavior of metallic micropillars
    Guo, Huili
    Zhang, Xu
    Shang, Fulin
    Pan, Bo
    Surnigawa, Takashi
    INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2017, 133 : 438 - 448
  • [32] Size-dependent endocytosis of single gold nanoparticles
    Shan, Yuping
    Ma, Suyong
    Nie, Liya
    Shang, Xin
    Hao, Xian
    Tang, Zhiyong
    Wang, Hongda
    CHEMICAL COMMUNICATIONS, 2011, 47 (28) : 8091 - 8093
  • [33] Size-Dependent Voltammetry at Single Silver Nanoelectrodes
    Hua, Hongmei
    Liu, Yong
    Wang, Dongmei
    Li, Yongxin
    ANALYTICAL CHEMISTRY, 2018, 90 (16) : 9677 - 9681
  • [34] Anisotropic Size-Dependent Plasticity in Face-Centered Cubic Micropillars Under Torsion
    Ill Ryu
    Wei Cai
    William D. Nix
    Huajian Gao
    JOM, 2016, 68 : 253 - 260
  • [35] Anisotropic Size-Dependent Plasticity in Face-Centered Cubic Micropillars Under Torsion
    Ryu, Ill
    Cai, Wei
    Nix, William D.
    Gao, Huajian
    JOM, 2016, 68 (01) : 253 - 260
  • [36] Lindemann-like size-independent glass-transition criterion for polymers
    Ao, Z. M.
    Zheng, W. T.
    Jiang, Q.
    POLYMER, 2008, 49 (16) : 3578 - 3581
  • [37] Measuring the Size-Independent Fracture Energy of Concrete
    Cifuentes, H.
    Alcalde, M.
    Medina, F.
    STRAIN, 2013, 49 (01) : 54 - 59
  • [38] Size-independent scaling analysis for explosive percolation
    Hagiwara, Kenta
    Ozeki, Yukiyasu
    PHYSICAL REVIEW E, 2022, 106 (05)
  • [39] Size-dependent transition of the deformation behavior of Au nanowires
    Na-Young Park
    Ho-Seok Nam
    Pil-Ryung Cha
    Seung-Cheol Lee
    Nano Research, 2015, 8 : 941 - 947
  • [40] Size-dependent transition of the deformation behavior of Au nanowires
    Park, Na-Young
    Nam, Ho-Seok
    Cha, Pil-Ryung
    Lee, Seung-Cheol
    NANO RESEARCH, 2015, 8 (03) : 941 - 947
12345