Dynamic mechanical behaviour and dislocation substructure evolution of Inconel 718 over wide temperature range

Lee, Woei Shyan; Lin, Chi Feng; Chen, Tao Hsing; Chen, Hong Wei

doi:10.1016/j.msea.2011.04.079

Cited by 75 publications

(22 citation statements)

References 31 publications

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“…9 alloy was similar to SS 304 and Inconel 718, the work hardening behavior of the HEA alloy was different, as SS304 and Inconel 718 did not show the presence of region II [27,28]. Note that the SF energy of SS 304 is ~ 25 mJ/m 2 [14].…”

Section: Accepted Manuscriptmentioning

confidence: 84%

“…Such a high level of work hardening has been demonstrated by SS304 and Inconel 718 [27,28]. However, note that although the alloys such as SS304 and Inconel 718 are compositionally complex, they possess many phases which assist in work hardening.…”

Section: Accepted Manuscriptmentioning

confidence: 96%

“…A careful comparison revealed that all alloys which showed strong dependence of YS on strain-rate had low SF energy[27,28,30]. A study carried out on Cu-x…”

mentioning

confidence: 99%

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High strain-rate compressive deformation behavior of the Al0.1CrFeCoNi high entropy alloy

et al. 2015

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Section: Accepted Manuscriptmentioning

confidence: 84%

Section: Accepted Manuscriptmentioning

confidence: 96%

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High strain-rate compressive deformation behavior of the Al0.1CrFeCoNi high entropy alloy

et al. 2015

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“…The dynamic compression mechanical properties of Inconel 718 at high strain rates and over wide temperature ranges were also investigated extensively. Lee et al [12][13][14] evaluated the dynamic impact behaviors of Inconel 718 by SHPB tests at temperatures ranging from −150 to 550°C, and observed the microstructure evolution of Inconel 718 by using OM and transmission electron microscopy (TEM). The results demonstrate that the dislocation multiplication led to a strengthening effect in the plastic deformed Inconel 718, and both the flow stress and strain rate sensitivity increased with increasing the strain rate, but decreased with increasing the temperature.…”

Section: Introductionmentioning

confidence: 99%

Effects of different heat treatments on the dynamic shear response and shear localization in Inconel 718 alloy

Song¹,

Hu²,

Zhang³

et al. 2018

Materials Science and Engineering: A

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The effects of different heat treatments on the dynamic shear response and the adiabatic shear localization characteristic of Inconel 718 alloy (Inconel 718) are studied by the flat hat-shaped sample subjected to the Split Hopkinson Pressure Bar (SHPB) loading. The microstructures of the concentrated shear zone are examined by optical microscopy (OM), scanning electron microscopy (SEM), electron backscattered diffraction (EBSD), and Vickers micro-hardness tests, respectively. The results indicate that the aged Inconel 718 with higher yield strength and lower strain hardening rate is easier to form an adiabatic shear band (ASB) than that of the solution treated Inconel 718 under dynamic shear loadings. Meanwhile, it has been found that the δ phase plays an important role in inhibiting the shear localization of the solution treated Inconel 718. Little plastic deformation occurs in the region adjacent to the ASB in the aged Inconel 718, whereas significant plastic deformation occurs in a certain width area around the ASB in the solution treated Inconel 718.

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“…In addition, some nickel-based superalloys, such as Inconel 718 [6][7][8][9], Inconel X-750 [10][11][12], and Hastelly C276 [13], which are frequently employed at elevated temperatures, also become a promising candidate for manufacturing a workpiece at cryogenic temperatures because of their high structure stability, excellent ductility, high toughness, high corrosion resistance, and especially high elastic limit under cryogenic environments. Heat treatment significantly influences the microstructures of nickel-based superalloys, which further affect the corresponding mechanical properties [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Influence of Heat Treatment on Microstructures and Mechanical Properties of NiCuCrMoTiAlNb Nickel-Based Alloy

Jiang

Sun

Zhang

et al. 2018

Metals

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Abstract:As-cast NiCuCrMoTiAlNb nickel-based alloys were subjected to two-stage heat treatment, including solution treatment and subsequent aging treatment. Furthermore, the influence of heat treatment on microstructures and mechanical properties of NiCuCrMoTiAlNb nickel-based alloys was further investigated. The as-cast NiCuCrMoTiAlNb Ni-based alloys are able to experience large plastic deformation at room temperature, where nanocrystalline phases are induced. In the case of heat-treated NiCuCrMoTiAlNb nickel-based alloys, with increasing Nb content, plenty of Ni 3 (Al, Ti) precipitates (γ phases) are distributed in the γ matrix and they are able to become the obstacles to impede the movement of dislocations, which is responsible for increasing the yield strength of NiCuCrMoTiAlNb nickel-based alloys. Pile-up of dislocations in the vicinity of γ precipitates adversely influences plasticity of NiCuCrMoTiAlNb nickel-based alloys.

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Dynamic mechanical behaviour and dislocation substructure evolution of Inconel 718 over wide temperature range

Cited by 75 publications

References 31 publications

High strain-rate compressive deformation behavior of the Al0.1CrFeCoNi high entropy alloy

High strain-rate compressive deformation behavior of the Al0.1CrFeCoNi high entropy alloy

Effects of different heat treatments on the dynamic shear response and shear localization in Inconel 718 alloy

Influence of Heat Treatment on Microstructures and Mechanical Properties of NiCuCrMoTiAlNb Nickel-Based Alloy

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