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
  • [1] Unified Model for Size-Dependent to Size-Independent Transition in Yield Strength of Crystalline Metallic Materials
    Liu, Wenbin
    Liu, Ying
    Cheng, Yangyang
    Chen, Lirong
    Yu, Long
    Yi, Xin
    Duan, Huiling
    PHYSICAL REVIEW LETTERS, 2020, 124 (23)
  • [2] Coexistence of size-dependent and size-independent thermal conductivities in phosphorene
    Zhu, Liyan
    Zhang, Gang
    Li, Baowen
    PHYSICAL REVIEW B, 2014, 90 (21):
  • [3] On the origin of size-dependent and size-independent crystal growth: Influence of advection and diffusion
    Kile, DE
    Eberl, DD
    AMERICAN MINERALOGIST, 2003, 88 (10) : 1514 - 1521
  • [4] From size-dependent strengthening to softening in nanolaminated Cu/Cu-Zr crystalline/amorphous micropillars
    Wang, Y. Q.
    Liang, X. Q.
    Wu, K.
    Zhang, J. Y.
    Liu, G.
    Sun, J.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 732 : 29 - 34
  • [5] Control of body size by oxygen supply reveals size-dependent and size-independent mechanisms of molting and metamorphosis
    Callier, Viviane
    Nijhout, H. Frederik
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2011, 108 (35) : 14664 - 14669
  • [6] Transition of the blastomere cell cycle from cell size-independent to size-dependent control at the midblastula stage in Xenopus laevis
    Wang, P
    Hayden, S
    Masui, Y
    JOURNAL OF EXPERIMENTAL ZOOLOGY, 2000, 287 (02): : 128 - 144
  • [7] Rapid and precise tumor cell separation using the combination of size-dependent inertial and size-independent magnetic methods
    Huang, Di
    Xiang, Nan
    LAB ON A CHIP, 2021, 21 (07) : 1409 - 1417
  • [8] "Size-Independent" Single-Electron Tunneling
    Zhao, Jianli
    Sun, Shasha
    Swartz, Logan
    Riechers, Shawn
    Hu, Peiguang
    Chen, Shaowei
    Zheng, Jie
    Liu, Gang-yu
    JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2015, 6 (24): : 4986 - 4990
  • [9] Surface effects and the size-dependent hardening and strengthening of nickel micropillars
    Hurtado, Daniel E.
    Ortiz, Michael
    JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2012, 60 (08) : 1432 - 1446
  • [10] Size-independent strength of amorphous–HCP crystalline metallic nanolayers
    Mohammad Abboud
    Sezer Özerinç
    Journal of Materials Research, 2019, 34 : 2275 - 2284
12345