Deformation kinetics of coarse-grained and ultrafine-grained commercially pure Ti

被引：28
|
作者：
Blum, W. [1 ]
Li, Y. J. [1 ]
Breutinger, F. [1 ]
机构：
[1] Univ Erlangen Nurnberg, Inst Werkstoffwissensch, D-91058 Erlangen, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 462卷 / 1-2期
关键词：
UFG Ti; deformation kinetics; dynamic strain aging; transition; solute clouds; dislocation model;
D O I：
10.1016/j.msea.2006.05.171
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The elevated temperature deformation kinetics of ultrafine-grained (UFG) Ti of commercial purity (grade 2) produced by equal channel angular pressing (ECAP) at elevated temperature was measured and compared to that of coarse-grained (CG) Ti. Like CG Ti, the UFG Ti exhibits dynamic strain aging effects related to transition between jerky glide of dislocations without solute cloud and viscous glide with cloud. In the jerky region the yield stress of UFG Ti is distinctly enhanced compared to CG Ti. The steady state deformation resistances of CG and UFG Ti are not significantly different. The jerky -> viscous transition results in a relative maximum of deformation resistance as function of strain, which is explained by the opposing effects of cloud formation and coarsening of dislocation structure. The high content of grain boundaries and dislocations in the initial state of UFG Ti stabilizes the material against break-away of dislocations from their clouds. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：275 / 278
页数：4
相关论文
共 50 条
  • [31] Features of the surface relief of TiNi alloy in coarse-grained and ultrafine-grained states at room and elevated temperatures
    Churakova, A. A.
    Gilmanova, E. F.
    Gunderov, D. V.
    OPEN SCHOOL-CONFERENCE OF NIS COUNTRIES ULTRAFINE GRAINED AND NANOSTRUCTURED MATERIALS, 2018, 447
  • [32] Regularities in Accumulation and Dissipation of Energy under Tension in Ti and Zr-1Nb Alloys in Coarse-Grained and Ultrafine-Grained States
    Sharkeev, Yurii
    Legostaeva, Elena
    Vavilov, Vladimir
    Skripnyak, Vladimir A.
    Belyavskaya, Olga
    Chulkov, Arsenii
    Kozulin, Alexander
    Skripnyak, Vladimir V.
    Eroshenko, Anna
    PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019, 2019, 2167
  • [33] Compressive Deformation Behaviors of Coarse- and Ultrafine-Grained Pure Titanium at Different Temperatures: A Comparative Study
    Long, Feng-Wu
    Jiang, Qing-Wei
    Xiao, Lin
    Li, Xiao-Wu
    MATERIALS TRANSACTIONS, 2011, 52 (08) : 1617 - 1622
  • [34] Deformation behaviour of ultrafine-grained materials
    Gertsman, VY
    Valiev, RZ
    Akhmadeev, NA
    Mishin, OV
    METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2, 1996, 225 : 739 - 744
  • [35] Effect of annealing on the microstructure and mechanical properties of ultrafine-grained commercially pure Al
    A. M. Mavlyutov
    T. A. Latynina
    M. Yu. Murashkin
    R. Z. Valiev
    T. S. Orlova
    Physics of the Solid State, 2017, 59 : 1970 - 1977
  • [36] Strength and torsion fracture mechanism of commercially pure titanium with ultrafine-grained structure
    Klevtsov, G., V
    Valiev, R. Z.
    Klevtsova, N. A.
    Fesenyuk, M., V
    Tyurkov, M. N.
    Polyakov, A., V
    LETTERS ON MATERIALS, 2021, 11 (03): : 273 - 278
  • [37] Effect of annealing on the microstructure and mechanical properties of ultrafine-grained commercially pure Al
    Mavlyutov, A. M.
    Latynina, T. A.
    Murashkin, M. Yu.
    Valiev, R. Z.
    Orlova, T. S.
    PHYSICS OF THE SOLID STATE, 2017, 59 (10) : 1970 - 1977
  • [38] Cyclic deformation of ultrafine-grained aluminum
    Wong, M. K.
    Kao, W. P.
    Lui, J. T.
    Chang, C. P.
    Kao, P. W.
    ACTA MATERIALIA, 2007, 55 (02) : 715 - 725
  • [39] Biaxial Deformation Behavior and Enhanced Formability of Ultrafine-Grained Pure Copper
    E. C. Moreno-Valle
    M. A. Monclus
    J. M. Molina-Aldareguia
    N. Enikeev
    I. Sabirov
    Metallurgical and Materials Transactions A, 2013, 44 : 2399 - 2408
  • [40] Corrosion properties of bioresorbable Mg-Zn-Zr-Ce alloy in coarse-grained and ultrafine-grained states
    Luginin, N. A.
    Eroshenko, A. Yu.
    Prosolov, K. A.
    Kashin, A. D.
    Khimich, M. A.
    Sharkeev, Yu. P.
    RUSSIAN PHYSICS JOURNAL, 2024, 67 (12) : 2231 - 2240
12345