Texture and Anisotropy in the Mechanical Properties of Titanium Alloys Caused by the Mechanism of Plastic Deformation

被引:11
作者
Betsofen, S. Ya. [1 ]
Ilyin, A. A. [1 ]
Plikhunov, V. V. [2 ]
Plotnikov, A. D. [3 ]
Filatov, A. A. [4 ]
机构
[1] MATI Tsiolkovskii Russian State Univ Technol, Ul Orshanskaya 3, Moscow 121552, Russia
[2] OAO NIAT, Moscow, Russia
[3] RKK Energiya, Korolev, Moscow Oblast, Russia
[4] OAO OKB Sukhoi, Moscow, Russia
来源
RUSSIAN METALLURGY | 2007年 / 05期
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1134/S0036029507050072
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Texture formation during sheet stamping and die forging of a titanium alloys is studied, and the effect of texture and the mechanism of plastic deformation on the strength of internal-pressure spherical vessels is considered. It is shown that, apart from texture, the anisotropy of the strength properties of the a alloys, which is estimated from the difference in the uniaxial- and biaxial-loading strengths, also depends on the chemical composition of the alloy. In the textureless state, the strength of the spherical vessels is higher than the uniaxial strengths of the VT5-1kt, PT3V, and PT3Vkt alloys by 4, 16, and 38%, respectively. This effect is found to be caused by the difference in the relative values of the critical shear stresses for operating slip and twinning systems. The high ductility of the PT3Vkt alloy is related to the fact that it has a ratio of critical shear stresses in the operating slip and twinning systems such that the material is virtually isotropic with respect to tensile loads. This specific feature minimizes the effect of the incompatibility of deformation in grains with different orientations during tension, which is the main cause of the fracture of titanium alloys. The results obtained are used to propose a quantitative criterion to estimate the technological ductility in order to design new titanium alloys.
引用
收藏
页码:387 / 393
页数:7
相关论文
共 7 条
  • [1] Bakofen V., 1977, DEFORMATION PROCESSE
  • [2] Using OIM to investigate the microstructural evolution of Ti-6Ai-4V
    Bieler, TR
    Glavicic, MG
    Semiatin, SL
    [J]. JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 2002, 54 (01): : 31 - 36
  • [3] Khasegava A., 1978, P 3 INT C TIT MOSC R, V3, P151
  • [4] Kolachev B. A., 1995, PHYSICOMECHANICAL PR
  • [5] Rubina E. B., 1989, IZV AKAD NAUK SSSR M, P152
  • [6] RUBINA YB, 1990, FIZ MET METALLOVED+, P191
  • [7] Room temperature deformation and mechanisms of slip transmission in oriented single-colony crystals of an α/β titanium alloy
    Suri, S
    Viswanathan, GB
    Neeraj, T
    Hou, DH
    Mills, MJ
    [J]. ACTA MATERIALIA, 1999, 47 (03) : 1019 - 1034