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Effect of recrystallization temperature on microstructures and mechanical properties of severe plastic thermo deformation Ti–6Al–4V alloy
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1.College of Materials and Metallurgy,University of Guizhou;2.Key Laboratory for Material Structure and Strength of Guizhou Province

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    Abstract:

    The Ti–6Al–4V alloy were thermo-forged in α+β two phase region,and then recrystallized in three different temperatures. The results show that the initial microstructure were fully transformed into fine equiaxed α and lamellar α+β,the fine equiaxed α and lamellar α+βwere gradually coarsening as increasing recrystallization temperature,the relative frequency of recrystallization grain were also increased,low angle boundary shows a converse trend. The total elongation and area reduction reach up to 19.9% and 42.5%,the mechanical properties gradually decreased as the elevate temperature which were attribute to coarse and inhomogeneous grain.

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[Sun Hao, Liang Yilong, Zhang Xiongfei, Li Wei, Yang Ming. Effect of recrystallization temperature on microstructures and mechanical properties of severe plastic thermo deformation Ti–6Al–4V alloy[J]. Rare Metal Materials and Engineering,2019,48(9):3015~3021.]
DOI:10.12442/j. issn.1002-185X.20180293

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History
  • Received:March 28,2018
  • Revised:May 03,2018
  • Adopted:August 09,2018
  • Online: October 09,2019
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