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Dynamic compressive mechanical properties of TB6 titanium alloyunder high temperature and high strain rate
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lanzhou institute of technology

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    Abstract:

    Using high temperature Hopkinson pressure bar test system,TB6 titanium alloy reducts the quality test 3000 s - 1 strain rate respectively, which is at different temperatures (550℃-850℃) and dynamic compression mechanical properties test, and get the material in different temperature and strain rate under the coupled action of true stress-strain curve, the temperature of the material flow stress and strain rate sensitivity. The experimental results show that under the condition of high strain rate, material has a certain strain rate strengthening, plasticizing effect, with the increase of temperature, the effects of the adiabatic heating thermal softening strenghthen, shear zone length increases. materials in 750 ℃ show abnormal strain rate softening phenomenon, shear band bifurcation may be the cause of strength decreased.

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[YI Xiang-bin, LI Baodong, ZHANG Junxi, GUO Xiaoru, CHANG Wenchun, LI Xinfa. Dynamic compressive mechanical properties of TB6 titanium alloyunder high temperature and high strain rate[J]. Rare Metal Materials and Engineering,2019,48(4):1220~1224.]
DOI:10.12442/j. issn.1002-185X.20170839

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History
  • Received:September 14,2017
  • Revised:October 28,2017
  • Adopted:November 08,2017
  • Online: May 13,2019
  • Published: