Study of pre-precipitated δ phase promoting deformation twinning and recrystallization behavior of Inconel 718 superalloy during hot compression

Jiang, Wen-Jr; Lü, Junxia; Guan, Hao; Wang, Mingming; Cheng, Xiaopeng; Liu, Linlin; Liu, Xianqiang; Wang, Jin; Zhang, Yuefei; Zhang, Ze; Lin, Weitong; Hu, Jing

doi:10.1016/j.matdes.2023.111693

Cited by 27 publications

(2 citation statements)

References 67 publications

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“…In coatings, Al exists in three ways: (1) solid solution into the Fe-Cr phase; (2) formation of small-sized precipitation phase Al 5 Y 3 O 12 ; and (3) formation of small-sized second-phase Al 2 O 3 . When the content of the Al element is higher, both smallsized precipitation phase Al 5 Y 3 O 12 and small-sized Al 2 O 3 of the coating are increased accordingly, which enhances the strength of dispersion strengthening and second-phase strengthening [53][54][55][56][57]. The Cr element mainly plays the role of solid solution strengthening, and the precipitated phase is mainly Y-Al-O rather than Cr-rich oxides, so the Cr content has less influence on the density of the precipitated phase [58,59].…”

Section: Mechanical Properties Of Fecraly-al 2 O 3 Composite Coatingsmentioning

confidence: 99%

Microstructure, Mechanical Properties, and Lead–Bismuth Eutectic Corrosion Behaviors of FeCrAlY-Al2O3 Nanoceramic Composite Coatings

Li,

Zhong,

Zhang

et al. 2024

Coatings

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Seven FeCrAlY-Al2O3 nanoceramic composite coatings are deposited on F/M steel via plasma spraying and laser remelting. A systematic investigation is conducted to examine the dependence of microstructure, mechanical properties, and lead–bismuth eutectic (LBE) corrosion resistance on the nano-Al2O3 addition and different Cr and Al contents. With the increase in Al content in FeCrAlY, gradual refinement of the coating grains occurs. The addition of nano-Al2O3 promotes the elemental segregation and precipitation of the second phase. The nano-Al2O3 notably enhances the mechanical properties of the coatings that are primarily attributed to second-phase and fine-grain strengthening. After LBE corrosion tests, intergranular corrosion morphology could be observed, where the contents of Cr and Al significantly influence the corrosion behavior of the coatings at varying temperatures.

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Section: Mechanical Properties Of Fecraly-al 2 O 3 Composite Coatingsmentioning

confidence: 99%

Microstructure, Mechanical Properties, and Lead–Bismuth Eutectic Corrosion Behaviors of FeCrAlY-Al2O3 Nanoceramic Composite Coatings

Li,

Zhong,

Zhang

et al. 2024

Coatings

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“…From the literature, these processing parameters have considerable influences on the microstructural evolution and flow stress of the alloys. The DRX behavior is dependent on the dwell time between the two passes of the processes, and meta-DRX occurs with an increasing dwell time [21][22][23][24]. In addition, the strain rate was important for hot compression microstructure.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution in a β-γ TiAl Alloy during Hot Deformation under Variable Conditions

Chen

Wang

et al. 2023

Crystals

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In contrast to practical hot compression processes, the testing of the hot workability of TiAl alloys is usually conducted under the conditions of constant strain rates and constant temperatures. This work aims at investigating the microstructural evolution of TiAl alloys on a Gleeble-3800 thermomechanical simulator under a variable strain rate (0.1, 0.01 and 0.001 s−1) at 1200 °C. The results show that, after a holding time of 30 s, the abrupt change in the strain rate at ε = 0.3 (engineering strain) has a remarkable influence on the flow stress and dynamic recrystallization (DRX) behavior of the β-γ Ti-44Al-6Nb-1Mo-0.3 (B, Y, La, Ce) (at.%) alloy. The flow stress demonstrates a rapid decrease with a sudden reduction in the strain rate. A duplex microstructure of γ + B2/β can be obtained under a high strain rate or continuous medium strain rate. During the two-step deformation, however, both γ→α phase transformation and DRX exist, and the content of the α phase demonstrates a significant increase when the strain rate becomes lower. Finally, a fine-grained structure of γ + B2/β + α2 phases with low residual stresses can be obtained via the two-step heat treatment processes. This provides a promising approach to significantly improve the hot workability of β-γ TiAl alloys.

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In situ EBSD study of formation and propagation of deformation bands in a single-crystal superalloy during tensile deformation

Jiang

Lü

et al. 2023

J Mater Sci

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Study of pre-precipitated δ phase promoting deformation twinning and recrystallization behavior of Inconel 718 superalloy during hot compression

Cited by 27 publications

References 67 publications

Microstructure, Mechanical Properties, and Lead–Bismuth Eutectic Corrosion Behaviors of FeCrAlY-Al2O3 Nanoceramic Composite Coatings

Microstructure, Mechanical Properties, and Lead–Bismuth Eutectic Corrosion Behaviors of FeCrAlY-Al2O3 Nanoceramic Composite Coatings

Microstructure Evolution in a β-γ TiAl Alloy during Hot Deformation under Variable Conditions

In situ EBSD study of formation and propagation of deformation bands in a single-crystal superalloy during tensile deformation

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