+Advanced Search
Contribution of microscopic stress and strain in constituent phases to mechanical properties of titanium alloys
Author:
Affiliation:

1.School of Material Science and Engineering,China University of Mining and Technology,Xuzhou,221116;2.China

Clc Number:

Fund Project:

Fundamental Research Funds for the Central Universities of China (number 2015QNA04)

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Analysis the contribution of constituent phases to mechanical properties is critical to design the microstructure of titanium alloys. For this reason, the microscopic stress and strain in soft primary α (α<sub>p</sub>) and hard transformed β matrix (β<sub>t</sub>) are quantitatively analyzed by a microstructure-based finite element model to determine their contributions to the strength and ductility of Ti-6Al-2Zr-1Mo-1V alloy. The results show that microscopic stress in both α<sub>p</sub> and β<sub>t</sub> shows a normal distribution. The peak stress and stress peak height of β<sub>t</sub> are much larger than that of α<sub>p</sub>. While, α<sub>p</sub> has large peak strain and β<sub>t</sub> has large strain peak height. As α<sub>p</sub> volume fraction decreases from 49% to 12%, the contribution of β<sub>t</sub> to ultimate tensile strength (UTS) and failure strain (FS) of the alloy increases from 59% to 91% and from 36% to 75%, respectively. However, as the contribution of β<sub>t</sub> increases, UTS of the alloy increases 17% and FS decreases 21%. This finding quantitatively reveals the contribution of constituent phases to strength and ductility and provides a basis to design the microstructure of titanium alloys.

    Reference
    Related
    Cited by
Get Citation

[Ji Zhe, Shen Chengjin, Xu Jie. Contribution of microscopic stress and strain in constituent phases to mechanical properties of titanium alloys[J]. Rare Metal Materials and Engineering,2019,48(12):3806~3811.]
DOI:10.12442/j. issn.1002-185X.20180685

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:June 28,2018
  • Revised:September 20,2018
  • Adopted:October 09,2018
  • Online: January 07,2020
  • Published: