Effect of crystallographic orientation on globularization during the rolling of a near α titanium alloy tube

Zhu Wensha; Pan Mingyan

doi:10.7513/j.issn.1004-7638.2021.05.011

Volume 42 Issue 5

Oct. 2021

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Zhu Wensha, Pan Mingyan. Effect of crystallographic orientation on globularization during the rolling of a near α titanium alloy tube[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 69-73, 98. doi: 10.7513/j.issn.1004-7638.2021.05.011

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Zhu Wensha, Pan Mingyan. Effect of crystallographic orientation on globularization during the rolling of a near α titanium alloy tube[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 69-73, 98. doi: 10.7513/j.issn.1004-7638.2021.05.011

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Effect of crystallographic orientation on globularization during the rolling of a near α titanium alloy tube

doi: 10.7513/j.issn.1004-7638.2021.05.011

Zhu Wensha^1
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Pan Mingyan^{2
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1.
Department of Materials Engineering, Shanxi Institute of Mechanical & Electrical Engineering, Changzhi 046011, Shanxi, China
2.
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

Received Date: 2021-06-25
Publish Date: 2021-10-30

Abstract

Abstract

The dynamic globularization of a near α titanium alloy tube during hot rolling was studied by observation of different regions of the pipe using metallographic analysis and electron backscatter diffraction (EBSD) technology. The results showed that the fraction of globularized α phases near the outer surface of the tube was very high. After globularization, the large-angle grain boundaries increased and the small-angle grain boundaries decreased. The globularization of the α phases in the middle part was greatly affected by the crystal orientation. The Schmidt factor of α phase in different crystallographic orientations is calculated. It was found that the α phases were more prone to be globularized when the basal slips and prism slips have a larger Schmidt factor (> 0.3) in the rolling direction (RD) and transverse direction (TD), respectively. The globularization would be difficult when the α phase has only one slip system and the Schmidt factor was high only in one direction.
- titanium alloys,
- tube,
- hot rolling,
- microstructures,
- globularization,
- crystallographic orientations

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References(18)

References

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