Effect of duplex aging on microstructure and mechanical properties of near-β titanium alloy processed by isothermal multidirectional forging

ZHANG, Chang-jiang; Jiang, Xi; Lü, Zhidan; Feng, Hui; Zhang, Shuzhi; Xu, Ying; Hayat, Muhammad Dilawer; Cao, Peng

doi:10.1016/s1003-6326(22)65863-1

Cited by 13 publications

(1 citation statement)

References 33 publications

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“…As an excellent structural material, Titanium alloys are extensively applied in the fields of aerospace, oceans, petrochemistry, and so on because it possesses excellent hightemperature properties, outstanding resistance to fatigue, low density, high resistance to corrosion, and high specific strength [1][2][3][4][5]. To date, Titanium alloys that have been successfully applied mainly deal with metastable β type Ti-15-3 [6], β-21S [7], and near-β type Ti1023 [8], Ti5553 [9], Ti55531 [10], BT22 [11], TA10 [12], and so on.…”

Section: Introductionmentioning

confidence: 99%

Investigation of High-Temperature Constitutive Behavior of Ti555211 Titanium Alloy Subjected to Plastic Deformation in the Different Phase Regions

Gao

Xue

Gao

et al. 2022

Metals

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Ti555211 titanium alloy is subjected to plastic deformation in the dual-phase (α + β phase) zone and single-phase (β phase) zone at various deformation temperatures and strain rates. High-temperature constitutive equations of the alloy in the dual-phase zone and single-phase zone are established in order to describe deformation behavior of the alloy in the different phase zones. By comparing the constitutive equation of the alloy in the dual-phase zone with that of the alloy in the single-phase zone, the deformation activation energy of the former was found to be higher than that of the latter. It is obvious that the deformation activation energy of α phase is obviously greater than that of β phase. Furthermore, the microstructural evolution of the alloy is different in the dual-phase zone and single-phase zone. When the alloy was subjected to plastic deformation in the dual-phase zone, the size of the grains in the β phase increased with the decreasing strain rate. When the alloy was subjected to plastic deformation in the single-phase zone, the size of the grains in the β phase considerably increased with the increasing deformation temperature. In particular, in the microstructures of the alloy subjected to plastic deformation in the single-phase region, the elongated grains can be observed at higher strain rates. Furthermore, it is more difficult for the alloy to induce plastic deformation in the dual-phase region than in the single-phase region.

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