Quantitative study of microstructural, textural and hardness evolution of high-purity Ti sheet during rolling from low to medium strains

Hu, Xing; Chai, Linjiang; Zhu, Yufan; Wu, Hao; Luo, Jinru; Tian, Lin; Sun, Qi; Li, Yuqiong; Cheng, Jianwei

doi:10.1016/j.mtcomm.2021.102989

Cited by 11 publications

(4 citation statements)

References 43 publications

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compression twins and

$\left{\right.

…”

Section: Resultsmentioning

confidence: 99%

“…This may be due to the orientation change caused by the continuous slip of the twins and matrix grains, which destroys the twinning relationship between them. [6] It can be seen that throughout the rolling process, f1122g < 112 3 > compression twins and f1012g < 101 1 > extension twins play the significant roles in the grain refinements of CP-Ti sheets.…”

Section: Mechanisms Of Twining-induced Grain Refinementsmentioning

confidence: 97%

“…The texture analysis showed that <0001> texture component increases while <11-20> texture component decreases with an increase in rolling reductions, which attributed those changes to the activations of different slip systems at different stresses. [6,7] Chun et al [8] indicated that both slip and twinning in CP-Ti sheets can be activated when a rolling reduction of 40% is imposed. As a result of massive twinning after 20%-40% rolling, initial grain structures were refined, leading to the presence of new textures.…”

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confidence: 99%

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Analysis of Microstructure, Texture Evolution, and the Mechanism of Grain Refinement of Commercially Pure Titanium During Cold Rolling: Experiment and Simulation

Sun,

Yang,

Liu

et al. 2023

Adv Eng Mater

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A comprehensive understanding of the microstructures and texture evolutions during the rolling process is of great significance for the preparations of high‐quality commercially pure titanium (CP‐Ti) sheets. Therefore, in the present work, the effects of rolling reductions on the microstructures and textures of CP‐Ti are investigated by optical microscope, electron backscatter diffraction, and X‐ray diffraction. A crystal plasticity finite element model (CPFEM) is developed to accurately predict the rolling deformation behaviors of CP‐Ti sheets. The results show that the slip and twinning including , compression twins and extension twins are prone to plastic deformations during the whole rolling process. The c‐axes of grains gradually tilt toward the transverse direction and the grains gradually deviate from the original //rolling direction (RD) to //RD. As a result, the mixed textures of and are developed in the specimen. The grain refinements are closely linked with the developments of and twins. In addition, the twin fractions and texture evolutions are well predicted by the CPFEM model. These results documented in this work should not only help to elucidate the microstructures and texture evolutions of CP‐Ti, but also shed important light on improving its properties.

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compression twins and

$\left{\right.

…”

Section: Resultsmentioning

confidence: 99%

Section: Mechanisms Of Twining-induced Grain Refinementsmentioning

confidence: 97%

mentioning

confidence: 99%

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Analysis of Microstructure, Texture Evolution, and the Mechanism of Grain Refinement of Commercially Pure Titanium During Cold Rolling: Experiment and Simulation

Sun,

Yang,

Liu

et al. 2023

Adv Eng Mater

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“…The corresponding average Kernel average misorientation (KAM) in the reference alloy is also lower (0.44°) than in the LPBF alloy (0.64°). A high residual strain has been associated with a high density of low-angle grain boundaries [125] and, as such, the density of these boundaries (2° to 10° misorientation) in both the reference and LPBF alloys were measured by EBSD to be 3% and 7%, respectively. Hu et al reported that in pure Ti sheet, the hardening effect due to low-angle boundaries was dependent on the level of strain [126] .…”

Section: Effect Of Residual Strainmentioning

confidence: 99%

Microstructure evolution in laser powder bed fusion-built Fe-Mn-Si shape memory alloy

2023

Microstructures

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The need for specialty powder composition limits the processing of a wide range of alloy products via the laser powder bed fusion (LPBF) technique. This work extends the adaptability of the LPBF technique by fabricating the first-ever Fe-30Mn-6Si (wt.%) product for potential use as a biodegradable shape memory alloy (SMA). Different LPBF processing parameters were assessed by varying the laser power, scan speed, and the laser re-scan strategy to achieve a fully dense part. The microstructure was found to respond to the processing conditions. For example, the microstructure of the parts produced by the high linear energy density (LED) had a columnar and strong crystallographic texture, while in the low LED, the parts were almost equiaxed and had a weak texture. To explain the evolved microstructure, the thermal history of the LPBF products was computed using the finite element analysis (FEA) of the melt pool gathered from a single-track laser scan experiment. The FEA results showed a varying temperature gradient, cooling and solidification rates, and temperature profile as a function of LED. Then, the relationship of hardness between grain size, phases present, and crystallographic misorientation of the LPBFbuilt alloy was analysed with reference to a control alloy of similar composition but prepared by arc melting. This study validates the LPBF processability of Fe-Mn-Si SMA and provides a new insight into the influence of processing parameters on the formed microstructure and hardness.

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Revealing Microstructural, Textural, and Hardness Evolution of Ti–6Al–4V Sheet Cooled From Sub β-Transus Temperature at Different Rates

Chai

Xia

Murty

et al. 2022

Metall Mater Trans A

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Quantitative study of microstructural, textural and hardness evolution of high-purity Ti sheet during rolling from low to medium strains

Cited by 11 publications

References 43 publications

Analysis of Microstructure, Texture Evolution, and the Mechanism of Grain Refinement of Commercially Pure Titanium During Cold Rolling: Experiment and Simulation

Analysis of Microstructure, Texture Evolution, and the Mechanism of Grain Refinement of Commercially Pure Titanium During Cold Rolling: Experiment and Simulation

Microstructure evolution in laser powder bed fusion-built Fe-Mn-Si shape memory alloy

Revealing Microstructural, Textural, and Hardness Evolution of Ti–6Al–4V Sheet Cooled From Sub β-Transus Temperature at Different Rates

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