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Connection Between Local Microstructure Heterogeneity and Local Texture in Deformed Near-α Titanium Alloy
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1.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

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National Science and Technology Major Project (J2019-VI-0005-0119); Youth Innovation Promotion Association CAS (2020193)

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    Abstract:

    A heterogeneous microstructure was found in a compressed near-α titanium alloy with a bimodal microstructure. The effect of the local texture on microstructural morphology was analyzed by electron backscattering diffraction techniques. Advanced orientation data processing was performed to study the micro-texture of primary α (αp) and β. The results show that there is a close relationship between local microstructure heterogeneity and local texture. The deviation angle θ can be used to quantitatively evaluate the orientation relationship (OR) between αp and the surrounding β grains from Burgers OR. The fractions of the αp/β boundary with small θ are always higher in the regions where coarse β grains exist than in the regions where the β grain is completely recrystallized. The orientation relationship between αp and β affects the recrystallization of prior β during deformation; it also exerts effects on the morphology of the transformed α phase by variant selection.

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[Tan Haibing, Zhao Zibo, Yang Jiuxu, Liu Yuanhong, Wang Qingjiang, Liu Jianrong, Zhu Shaoxiang. Connection Between Local Microstructure Heterogeneity and Local Texture in Deformed Near-α Titanium Alloy[J]. Rare Metal Materials and Engineering,2022,51(12):4385~4388.]
DOI:10.12442/j. issn.1002-185X.20220454

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History
  • Received:May 24,2022
  • Revised:November 28,2022
  • Adopted:July 21,2022
  • Online: January 11,2023
  • Published: December 30,2022