characteristics of the dynamic recrystallization behavior of ti-45al-8.5nb-0.2w-0.2b-0.3y alloy during high temperature deformation

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ID: 147683
2017
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Abstract
The dynamic recrystallization (DRX) behavior of Ti-45Al-8.5Nb-0.2W-0.2B-0.3Y (at %) alloy has been investigated through hot compression tests. The tests were executed at a temperature range of 1000–1200 °C and a strain rate range of 0.001–1 s−1 under a true strain of 0.9. It was found that the α2 phase which is produced during heat treatment is reduced during hot compression due to thermo-mechanical coupling. The value of the activation energy is 506.38 KJ/mol. With the increase in deformation temperature and the decrease in strain rate, DRX is more likely to occur, as a result of sufficient time and energy for the DRX process. Furthermore, the volume fraction of high angle grain boundaries increases to 89.01% at a temperature of 1200 °C and the strain rate of 0.001 s−1, meaning completely dynamic recrystallization. In addition, DRX is related to the formation of twin boundaries. The volume fraction of twin boundaries rises to 16.93% at the same condition of completely dynamic recrystallization.
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xiang2017metalscharacteristics Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lin Xiang, Bin Tang, Xiangyi Xue, Hongchao Kou, Jinshan Li
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Journal seminars in cancer biology
Year 2017
DOI
10.3390/met7070261
URL
https://www.mdpi.com/2075-4701/7/7/261
Keywords
hot compression dynamic recrystallization metallurgy

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