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Microstructure evolution of large-scale titanium slab ingot based on CAFE method during EBCHM

Published online by Cambridge University Press:  17 May 2017

Qian-Li Liu ,
Xiang-Ming Li  and
Ye-Hua Jiang
Qian-Li Liu
Affiliation:
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Xiang-Ming Li*
Affiliation:
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Ye-Hua Jiang
Affiliation:
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
*
a) Address all correspondence to this author. e-mail: Lixm@kmust.edu.cn
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Abstract

The purpose of this work is, based on CAFE method, to study the microstructure evolution and optimize the quality of the large-scale titanium slab ingot during EBCHM. The nucleation parameters of the microstructure simulation of titanium ingot are determined based on one of the actual experimental results. For the determined parameters, our theoretical results are agreement with other experimental results. The effects of pouring temperature and pulling speed on the microstructure are presented based on CAFE method. The quantitative analyses of the simulated results show that with the pulling speed increasing, the number of grains decreases, whereas the mean grain radius increases under identical thermal condition; with the pouring temperature increasing, the mean grain radius increases under the given pulling speed. Our results are very important to obtain the optimal structure of the ingots by controlling pulling speed and pouring temperature.

Keywords

microstructure evolutionlarge-scale titanium slab ingotnucleation parametersCAFE method
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 16 , 28 August 2017 , pp. 3175 - 3182
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Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Jürgen Eckert

References

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