High-Temperature Deformation Behavior of Ti-6Al-4V Alloy without and with Hydrogenation Content of 0.27 wt.%

  • Yong Niu
  • Miaoquan Li
  • Hongliang Hou
  • Yaoqi Wang
  • Yingying Lin
Article
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Abstract

Isothermal compression of Ti-6Al-4V alloy without and with hydrogenation content of 0.27 wt.% was carried out on Gleeble-1500D thermal simulation machine at deformation temperature between 760 and 1000 °C and strain rate from 0.001 to 1 s−1. The experimental results show that hydrogenation can decrease the deformation temperature or increase the strain rate of Ti-6Al-4V alloy. The apparent activation energy was determined to be 667 kJ mol−1 for isothermal compression of the Ti-6Al-4V alloy without hydrogenation content of 0.27 wt.% in the α + β phase region (760-960 °C), and this value was about 655 and 199 kJ mol−1 for the alloy with 0.27 wt.% of hydrogenation content in the α + β phase region (760-840 °C) and β phase region (840-960 °C), respectively. Constitutive equation was developed for the high-temperature deformation of Ti-6Al-4V alloy both without and with hydrogenation content of 0.27 wt.%.

Keywords

high-temperature deformation hydrogenation Ti-6Al-4V alloy 
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Notes

Acknowledgments

The authors thank the financial supports from the National Natural Science Foundation of China with Grant No. 50371068, and the Aviation Scientific Foundation of AVIC with Grant No. 05H53058.

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Copyright information

© ASM International 2009

Authors and Affiliations

  • Yong Niu
    • 1
  • Miaoquan Li
    • 1
  • Hongliang Hou
    • 2
  • Yaoqi Wang
    • 2
  • Yingying Lin
    • 1
  1. 1.Northwestern Polytechnical UniversityXi’anP.R. China
  2. 2.Beijing Aeronautical Manufacturing Technology Research InstituteBeijingP.R. China

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