Analysis of anisotropy mechanism in relation with slip activity in near α titanium alloy pipe after Pilger cold rolling

He, Shengtong; Zeng, Weidong; Zhao, Zibo; Xu, Jianwei; Zhou, Dadi

doi:10.1016/j.jallcom.2022.164785

Cited by 16 publications

(4 citation statements)

References 31 publications

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“…It is generally believed that the slip system cannot be activated when the m is less than 0.3. [ 42,43 ] Figure shows the frequency curves of the m of each <a> slip system when loading in different directions, and its average value (

\overset{\cdot}{\text{m}}

) and the average stress

\left(\overset{\cdot}{\sigma}\right)_{\text{LDa}}

\left(\sigma\right)_{\text{CRSS}}

\overset{\cdot}{\text{m}}

) of each slip system along the LD are also given in the corresponding figure. According to Figure 13, the distribution of m values of each slip system in the range of 0.4–0.5 is shown in Table 2 .…”

Section: Discussionmentioning

confidence: 99%

Development of Low Anisotropic Commercially Pure Titanium Foils by Asymmetric Rolling and Annealing

Guo,

Wang,

Kong

et al. 2024

Adv Eng Mater

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This work studies the evolution of microstructure, texture, and anisotropy of pure titanium foils by symmetric rolling (SR) and asymmetric rolling (ASR) and subsequent annealing. The as‐received material shows equiaxed alpha grains and strong transverse texture (S‐T texture), which leads to severe anisotropy. The index of plane anisotropy (IPA) of yield stress (YS) and ultimate tensile stress (UTS) of the as‐received material is 15.2% and 7.5%, respectively. With the increase of deformation, the S‐T texture is mainly transformed into a mixed texture of transverse texture (T texture) and rolling direction texture (R texture), which balances the start‐up of the slip system when loading in the rolling direction (RD) and transverse direction (TD), so that the mechanical stress along RD and TD are close to each other and the anisotropy is improved. Especially for the samples prepared by ASR and annealing, the appearance of more R texture or basal texture (B texture) at the same deformation makes them show lower anisotropy. Therefore, after the same annealing treatment, the IPA of titanium foil with a thickness of 0.2 mm prepared by ASR is the smallest, which is 6.6% and 0.03%, respectively, while the IPA prepared by SR is 10.5% and 2.5%.This article is protected by copyright. All rights reserved.

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\overset{\cdot}{\text{m}}

) and the average stress

\left(\overset{\cdot}{\sigma}\right)_{\text{LDa}}

\left(\sigma\right)_{\text{CRSS}}

\overset{\cdot}{\text{m}}

Section: Discussionmentioning

confidence: 99%

Development of Low Anisotropic Commercially Pure Titanium Foils by Asymmetric Rolling and Annealing

Guo,

Wang,

Kong

et al. 2024

Adv Eng Mater

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“…According to Equations ( 10) and (11), n and S are the average values of the slope for the ln 4a) and lnsinh(ασ) − 1/T curves (Figure 4b), respectively. Therefore, n = 1.875, S = 13,974.775 and Q = RnS = 217,849 J/mol.…”

Section: The Materials Model Of Ti80 Alloymentioning

confidence: 99%

“…Moreover, it reduced the loss of the rolling mill's roll, which was more suitable for production and processing. Compared with theoretical calculations of the axial force of the plug, the FE simulation extraction was more simplified [11]. The average axial force of the ejector extracted and sorted is shown in Figure 15b.…”

Section: The Effect Of Piercing Temperature On Rolling Loadmentioning

confidence: 99%

“…Wei et al [10] applied magnetic abrasive finishing in the cold-rolled titanium alloy tubes aiming at the residual stress tailoring and service performance improvement. He et al [11] studied the anisotropy mechanism for Pilger cold-rolled Ti80 alloy pipes. Prismatic <a> slip was the dominant deformation mechanism in RD, and the basal <a> slip was mostly activated in TD.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Piercing Temperature on Stress—Strain Distribution and Dimensional Accuracy for Ti80 Titanium Alloy Seamless Tubes Based on Numerical Simulation

Zhou,

Fu,

et al. 2023

Metals

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Titanium alloy tubes were an ideal material to replace steel tubes. However, the relationship between piercing temperature and dimensional accuracy for titanium alloy seamless tubes was unclear. Therefore, the effects of piercing temperature on the stress—strain distribution and dimensional accuracy of Ti80 titanium alloy were studied using thermal simulation compression tests, finite element numerical analysis optimization and optical microscopy. Pierced at 1050 °C, Ti80 titanium alloy was cross-rolled and perforated to obtain a capillary tube, whose dimensional accuracy was better than that of those pierced at 850 °C and 950 °C. The microstructure of Ti80 seamless tubes was layered α-Ti, grain boundary β-Ti and a Widmannstatten structure. The tensile strength, yield strength and absorbed energy were 867 MPa, 692 MPa and 52 J, respectively.

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Microstructure and properties evolutions of powder metallurgy TA15 titanium plates by a novel hot rolling method

Zhang,

Gao,

Zhang

et al. 2024

J Mater Sci

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Analysis of anisotropy mechanism in relation with slip activity in near α titanium alloy pipe after Pilger cold rolling

Cited by 16 publications

References 31 publications

Development of Low Anisotropic Commercially Pure Titanium Foils by Asymmetric Rolling and Annealing

Development of Low Anisotropic Commercially Pure Titanium Foils by Asymmetric Rolling and Annealing

Effect of Piercing Temperature on Stress—Strain Distribution and Dimensional Accuracy for Ti80 Titanium Alloy Seamless Tubes Based on Numerical Simulation

Microstructure and properties evolutions of powder metallurgy TA15 titanium plates by a novel hot rolling method

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