Transition in the deformation mode of nanocrystalline tantalum processed by high-pressure torsion

被引：20
作者：
Ligda, J. P. [1 ]
Schuster, B. E. [2 ]
Wei, Q. [3 ]
机构：
[1] Univ N Carolina, PhD Program Nanoscale Sci & Technol, Charlotte, NC 28223 USA
[2] USA, Res Lab, Aberdeen Proving Ground, MD 21005 USA
[3] Univ N Carolina, Dept Mech Engn, Charlotte, NC 28223 USA
来源：
SCRIPTA MATERIALIA | 2012年 / 67卷 / 03期
关键词：
Nanoindentation; Nanocrystalline metal; Shear bands; Microcompression; Severe plastic deformation; ULTRAFINE GRAIN SIZES; MECHANICAL-PROPERTIES; ELASTIC-MODULUS; SHEAR BANDS; BEHAVIOR; MICROSTRUCTURE; INDENTATION; COMPRESSION; IRON; METHODOLOGY;
D O I：
10.1016/j.scriptamat.2012.04.031
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present quasi-static room temperature compression and nanoindentation data for nanocrystalline and ultrafine grained tantalum processed by high-pressure torsion. Because bulk samples possess an inherent gradient in properties, microstructures were characterized using site-specific transmission electron microscopy and synchrotron X-ray diffraction. Nanocrystalline Ta shows appreciable homogeneous plastic deformation in compression; however, specimens with the smallest grain sizes exhibit localized plastic deformation via shear bands. Microstructural changes associated with this transition in deformation mode are discussed. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：253 / 256
页数：4
相关论文
共 50 条
  • [21] Evidence for superplasticity in a CoCrFeNiMn high-entropy alloy processed by high-pressure torsion
    Shahmir, Hamed
    He, Junyang
    Lu, Zhaoping
    Kawasaki, Megumi
    Langdon, Terence G.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 685 : 342 - 348
  • [22] Hardening and thermal stability of a nanocrystalline CoCrFeNiMnTi0.1 high-entropy alloy processed by high-pressure torsion
    Shahmir, H.
    Nili-Ahmadabadi, M.
    Shafie, A.
    Langdon, T. G.
    7TH INTERNATIONAL CONFERENCE ON NANOMATERIALS BY SEVERE PLASTIC DEFORMATION, 2017, 194
  • [23] Nanoscaled structure of a Cu-Fe composite processed by high-pressure torsion
    Sauvage, X
    Pippan, R
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 410 : 345 - 347
  • [24] Microstructural and Hardness Evolution in a Duplex Stainless Steel Processed by High-Pressure Torsion
    Ma, Ming
    Ding, Hua
    Huang, Yi
    Tian, Cheng Wei
    Langdon, Terence G.
    CRYSTALS, 2020, 10 (12): : 1 - 11
  • [25] Effect of Deformation by High-Pressure Torsion in a Combined Matrix on the Properties of Brass
    Volokitina, I. E.
    Volokitin, A. V.
    Kolesnikov, A. S.
    Kolesnikova, O. G.
    METALLURGIST, 2023, 66 (11-12) : 1601 - 1606
  • [26] Effect of High-pressure Torsion Deformation on Isothermal ω Phase in β-Ti Alloys
    Tsuchiya, K.
    Farjami, S.
    Jiang, B.
    Min, X.
    Emura, S.
    Ii, S.
    TI-2011: PROCEEDINGS OF THE 12TH WORLD CONFERENCE ON TITANIUM, VOL I, 2012, : 584 - 587
  • [27] Microstructure and microhardness of OFHC copper processed by high-pressure torsion
    Almazrouee, Abdulla I.
    Al-Fadhalah, Khaled J.
    Alhajeri, Saleh N.
    Langdon, Terence G.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 641 : 21 - 28
  • [28] Formation of nanocrystalline grain structure in an Mg-Gd-Y-Zr alloy processed by high-pressure torsion
    Ren, Xinyu
    An, Xinglong
    Ni, Song
    Huang, Yi
    Song, Min
    MATERIALS CHARACTERIZATION, 2022, 191
  • [29] Continuous high-pressure torsion
    Edalati, Kaveh
    Horita, Zenji
    JOURNAL OF MATERIALS SCIENCE, 2010, 45 (17) : 4578 - 4582
  • [30] High-pressure torsion of hafniurn
    Edalati, Kaveh
    Horita, Zenji
    Mine, Yoji
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (7-8): : 2136 - 2141
12345