Effect of ultrasonic treatment on the microstructure and mechanical properties of a new ni-base superalloy 4716MA0

Wen, Pengcheng; Wang, Chang; Zhou, Peishan; Yang, Mei; Wang, Liang; Wang, Bin; Wang, Haiyang

doi:10.1016/j.jallcom.2022.166278

Cited by 3 publications

(2 citation statements)

References 53 publications

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“…In addition, according to the statistics of the misorientation angle in Figure 4b,e, compared with the untreated specimen, the small-angle grain boundary (<10°) of the specimen decreased after the solution and aging treatment, while the large-angle grain boundary (>10°) increased. The large-angle grain boundary mainly makes crack propagation difficult, which is conducive to improving the toughness of the alloy [22]. Figure 5 shows the TEM images of the SLM as-built TA15 and TA15-HT2 alloys.…”

Section: Influence Of Heat Treatment Parameters On Microstructure Of ...mentioning

confidence: 99%

Microstructural Evolution and Mechanical Behavior of TA15 Titanium Alloy Fabricated by Selective Laser Melting: Influence of Solution Treatment and Aging

Wang,

Jin,

Zhao

et al. 2023

Metals

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In this study, TA15 titanium alloys were successfully prepared using selective laser melting (SLM). The results show that the microstructure of each TA15 specimen is composed of a large number of acicular α’ martensite crystals accompanied by a lot of dislocations and twin structures in the martensite due to non-equilibrium heating and cooling via SLM. After solution treatment and aging treatment, the martensite structure is successfully transformed into a typical duplex structure and an equiaxial structure. When there is an increase in the solution temperature, the size of the equiaxed primary α phase and the elongation of the specimen gradually increases, while the thickness of the layered secondary α phase and the tensile strength of the specimen decreases accordingly. After solution treatment at 1000 °C, the specimens show the best comprehensive mechanical properties, i.e., a high-temperature tensile strength of 715 MPa and a corresponding elongation of 24.5%. Subsequently, an appropriate solution–aging treatment is proposed to improve the high-temperature mechanical properties of SLMed TA15 titanium alloys in aerospace.

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Section: Influence Of Heat Treatment Parameters On Microstructure Of ...mentioning

confidence: 99%

Microstructural Evolution and Mechanical Behavior of TA15 Titanium Alloy Fabricated by Selective Laser Melting: Influence of Solution Treatment and Aging

Wang,

Jin,

Zhao

et al. 2023

Metals

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“…However, the effects of Co on other precipitates, such as carbides and the σ phase, have not yet been studied. Actually, except for γ′ precipitates, factors originating from other precipitates, i.e., their morphology, size, distribution, and stability in superalloys, also have an important influence on the mechanical properties [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Co on the Microstructure and Mechanical Properties of Ni-Based Superalloys Prepared via Selective Laser Melting

et al. 2023

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In this work, two Ni-based superalloys with 13 wt.% and 35 wt.% Co were prepared via selective laser melting (SLM), and the effects of Co on the microstructure and mechanical properties of the additively manufactured superalloys were investigated. As the Co fraction increased from 13 wt.% to 35 wt.%, the average grain size decreased from 25.69 μm to 17.57 μm, and the size of the nano-phases significantly increased from 80.54 nm to 230 nm. Moreover, the morphology of the γ′ phase changed from that of a cuboid to a sphere, since Co decreased the γ/γ′ lattice mismatch from 0.64% to 0.19%. At room temperature, the yield strength and ultimate tensile strength of the 13Co alloy reached 1379 MPa and 1487.34 MPa, and those of the 35Co alloy were reduced to 1231 MPa and 1350 MPa, while the elongation increased by 52%. The theoretical calculation indicated that the precipitation strengthening derived from the γ′ precipitates made the greatest contribution to the strength.

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Effect of Electromagnetic Oscillation on Grain Structure of K477 Superalloy Turbine Guide Castings

Xie,

Hao,

Liu

et al. 2023

Inter Metalcast

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Effect of ultrasonic treatment on the microstructure and mechanical properties of a new ni-base superalloy 4716MA0

Cited by 3 publications

References 53 publications

Microstructural Evolution and Mechanical Behavior of TA15 Titanium Alloy Fabricated by Selective Laser Melting: Influence of Solution Treatment and Aging

Microstructural Evolution and Mechanical Behavior of TA15 Titanium Alloy Fabricated by Selective Laser Melting: Influence of Solution Treatment and Aging

The Effects of Co on the Microstructure and Mechanical Properties of Ni-Based Superalloys Prepared via Selective Laser Melting

Effect of Electromagnetic Oscillation on Grain Structure of K477 Superalloy Turbine Guide Castings

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