Paper Title:
Effects of Strain Rate on Mechanical Properties and Microstructure of V-5Cr-5Ti Alloy
  Abstract

In this work the static and dynamic tensile properties of vanadium alloy V-5Cr-5Ti were investigated at strain rates ranged from 3.3x10-5/s to 1.2x102/s. The material microstructures were analyzed using optical microscope, SEM, TEM, XRD and EDS. Results show that the yield strength a increases with strain rate. The brittle-ductile transition strain-rate is about 101/s to102/s. At room temperature the tensile fracture at a low strain rate occurs via mixed modes of microvoid aggregating and transgranular cracking; at high strain rate the fracture occurs via a brittle mode. The analysis by TEM, XRD and EDX shows the existence of lath martensite, and on there exits precipitate phase of Ti(O,C, N) in grain boundaries.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
2535-2538
DOI
10.4028/www.scientific.net/MSF.654-656.2535
Citation
W. J. Hu, X. C. Huang, F. J. Zhang, J. Mei, Y. X. Yan, Y. M. Chen, "Effects of Strain Rate on Mechanical Properties and Microstructure of V-5Cr-5Ti Alloy", Materials Science Forum, Vols. 654-656, pp. 2535-2538, 2010
Online since
June 2010
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