Investigation on transformation-related recrystallization behavior of Ti2AlNb-based alloy

Zhao, Quan; Lv, Manqian; Cui, Zhenshan

doi:10.1016/j.intermet.2021.107302

Cited by 13 publications

(2 citation statements)

References 38 publications

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“…The O phase had a much pronounced , similar to . The pinning effect of the α 2 phase could effectively restrain the growth of the B2 grains [25,26]. Thus, we speculated that the α 2 phase had greater .…”

Section: Discussionmentioning

confidence: 98%

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti₂AlNb sheets

Sui

Wang

Liu

et al. 2021

Materials Science and Technology

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In this work, spark-plasma-sintered Ti-20.3Al-24.7Nb (at.-%) compact was pack rolled in different phase fields to fabricate Ti2AlNb sheets with high strength and ductility without post-heat treatment. The nano O phases in the B2 matrix contributed to the high tensile strength and ductility in a single B2 phase field. In the O + B2 phase field, the O phases remarkably increased in size and resulted in high tensile strength of 1407.1 MPa. Maintaining the O phases to nano sizes and cooperation with micro-sized α2 phases resulted in extremely high elongation of 13.91% in the α2+O + B2 phase field. The [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] strengthening effects of the α2 and O phases under different conditions were analysed in detail. Highlights Spark-plasma-sintered pre-alloyed powders are used as the raw compact before hot pack rolled Ti2AlNb sheet. Ti2AlNb sheets with good mechanical properties are obtained without any post-heat treatment. This ‘SPS pre-alloyed powder + hot pack rolling’ method has great potential in breaking the limit in sheet properties. The strengthening effects of different factors are analysed.

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Section: Discussionmentioning

confidence: 98%

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti₂AlNb sheets

Sui

Wang

Liu

et al. 2021

Materials Science and Technology

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“…Recrystallization fractions of the specimens with different strain rates during the annealing process were supplemented, as shown in Table 2 . The total recrystallization fraction is equal to the sum of DRX and PDRX [ 38 ];

where

is the fraction of dynamic recrystallization at the end of deformation,

is post-dynamic recrystallization during annealing.…”

Section: Discussionmentioning

confidence: 99%

Strain Rate Dependence and Recrystallization Modeling for TC18 Alloy during Post-Deformation Annealing

Kong³

et al. 2023

Materials

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In this paper, the dependence of dynamic recrystallization (DRX) and post-dynamic recrystallization (PDRX) of TC18 alloy on strain rate within the range of 0.001 s−1~1 s−1 was investigated through isothermal compression and subsequent annealing in the single-phase region. Electron backscatter diffraction (EBSD) characterization was employed to quantify microstructure evolution and to reveal the recrystallization mechanism. At the thermo-deformation stage, the DRX fraction does not exceed 10% at different strain rates, due to the high stacking fault energy of the β phase. During the subsequent annealing process, the total recrystallization fraction increases from 10.5% to 79.6% with the strain rate increasing from 0.001 s−1 to 1 s−1. The variations in the geometrically necessary dislocation (GND) density before and after annealing exhibit a significant discrepancy with the increasing strain rate, indicating that the GND density is a key factor affecting the PDRX rate. The PDRX mechanisms, namely meta-dynamic recrystallization (MDRX), continuous static recrystallization (CSRX) and discontinuous static recrystallization (DSRX), were also revealed during the annealing process. A new kinetic model coupling DRX and PDRX was proposed to further describe the correlation between recrystallization and the strain rate during continuous deformation and annealing. This new model facilitates the prediction of recrystallization fraction during isothermal deformation and annealing of titanium alloys.

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Refinement Mechanism of Centimeter-Grade Coarse Grains in As-Cast Ti2AlNb-Based Alloy Through Uniaxial and Multi-axial Compressions

Liu,

Yang,

Cui

2023

Lecture Notes in Mechanical Engineering

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Investigation on transformation-related recrystallization behavior of Ti2AlNb-based alloy

Cited by 13 publications

References 38 publications

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti₂AlNb sheets

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti₂AlNb sheets

Strain Rate Dependence and Recrystallization Modeling for TC18 Alloy during Post-Deformation Annealing

Refinement Mechanism of Centimeter-Grade Coarse Grains in As-Cast Ti2AlNb-Based Alloy Through Uniaxial and Multi-axial Compressions

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Investigation on transformation-related recrystallization behavior of Ti2AlNb-based alloy

Cited by 13 publications

References 38 publications

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti2AlNb sheets

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti2AlNb sheets

Strain Rate Dependence and Recrystallization Modeling for TC18 Alloy during Post-Deformation Annealing

Refinement Mechanism of Centimeter-Grade Coarse Grains in As-Cast Ti2AlNb-Based Alloy Through Uniaxial and Multi-axial Compressions

Contact Info

Product

Resources

About

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti₂AlNb sheets

Hot pack rolling of spark-plasma-sintered pre-alloyed powders to fabricate Ti₂AlNb sheets