Deformation crossover in nanocrystalline Zr micropillars: The strongest external size

被引：21
|
作者：
Zhang, J. Y. [1 ]
Cui, J. C. [1 ]
Liu, G. [1 ]
Sun, J. [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
来源：
SCRIPTA MATERIALIA | 2013年 / 68卷 / 08期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Nanocrystalline Zr micropillar; Plastic deformation; Strength; Size effect; MECHANICAL-BEHAVIOR; PLASTICITY;
D O I：
10.1016/j.scriptamat.2012.12.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
For small-scale metallic single crystals, systematic studies have established that external sample size (phi) has an obvious influence on the apparent strength, following a "smaller is stronger" fashion. In the present nanocrystalline (NC) Zr micropillars, deformation crossover leads to the strongest external size emerging at a critical phi approximate to 400 nm, similar to that of bulk-scaled NC metals. Above the critical external size the NC Zr pillars failed via highly inhomogeneous single-shear offset, below which they deformed via relative homogeneous shear. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：639 / 642
页数：4
相关论文
共 50 条
  • [21] GENERATION OF NANOSCALE DEFORMATION TWINS AT FREE SURFACES IN NANOCRYSTALLINE AND ULTRAFINE-GRAINED BULK MATERIALS, THIN FILMS AND MICROPILLARS
    Ovid'ko, I. A.
    Skiba, N. V.
    REVIEWS ON ADVANCED MATERIALS SCIENCE, 2015, 43 (1-2) : 22 - 30
  • [22] Size effect on the deformation mechanisms of nanocrystalline platinum thin films
    Shu, Xinyu
    Kong, Deli
    Lu, Yan
    Long, Haibo
    Sun, Shiduo
    Sha, Xuechao
    Zhou, Hao
    Chen, Yanhui
    Mao, Shengcheng
    Liu, Yinong
    SCIENTIFIC REPORTS, 2017, 7
  • [23] Grain-size dependence of plastic deformation in nanocrystalline Fe
    Jang, D
    Atzmon, M
    JOURNAL OF APPLIED PHYSICS, 2003, 93 (11) : 9282 - 9286
  • [24] Grain-size dependence of plastic deformation in nanocrystalline Fe
    Atzmon, M. (atzmon@umich.edu), 1600, American Institute of Physics Inc. (93):
  • [25] Grain Size Effect on Deformation Mechanisms of Nanocrystalline bcc Metals
    Cheng, G. M.
    Jian, W. W.
    Xu, W. Z.
    Yuan, H.
    Millett, P. C.
    Zhu, Y. T.
    MATERIALS RESEARCH LETTERS, 2013, 1 (01): : 26 - 31
  • [26] Size effect on the deformation mechanisms of nanocrystalline platinum thin films
    Xinyu Shu
    Deli Kong
    Yan Lu
    Haibo Long
    Shiduo Sun
    Xuechao Sha
    Hao Zhou
    Yanhui Chen
    Shengcheng Mao
    Yinong Liu
    Scientific Reports, 7
  • [27] Influence of grain size on deformation mechanisms: An extension to nanocrystalline materials
    Zhu, YT
    Langdon, TG
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 409 (1-2): : 234 - 242
  • [28] Size-dependent deformation behavior of nanocrystalline graphene sheets
    Yang, Zhi
    Huang, Yuhong
    Ma, Fei
    Sun, Yunjin
    Xu, Kewei
    Chu, Paul K.
    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2015, 198 : 95 - 101
  • [29] Atomistic simulations of the effect of Zr addition on the microstructure and plastic deformation of nanocrystalline copper
    Zhou, Kai
    Zhang, Ting
    Liu, Bin
    Yao, Yijun
    PHYSICA B-CONDENSED MATTER, 2018, 547 : 33 - 37
  • [30] The Hall-Petch breakdown in nanocrystalline metals: A crossover to glass-like deformation
    Trelewicz, Jason R.
    Schuh, Christopher A.
    ACTA MATERIALIA, 2007, 55 (17) : 5948 - 5958
12345