Slip localization in Inconel 718: A three-dimensional and statistical perspective

Charpagne, Marie-Agathe; Hestroffer, Jonathan M.; Polonsky, Andrew; Echlin, McLean P.; Texier, Damien; Valle, Valéry; Beyerlein, Irene J.; Pollock, Tresa M.; Stinville, J.C.

doi:10.1016/j.actamat.2021.117037

Cited by 49 publications

(18 citation statements)

References 53 publications

(80 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conversely, the distribution of the m factor between bulk grains indicates that it may not be as relevant for the description of slip activity in the bulk. Direct transmission may not be of significant importance within the bulk, in agreement with the recent observation of the importance of the triple junction within the bulk [56]. In this work, it was observed in a deformed metallic material that a large amount of the slip events that develop originate from triple junction lines that have significant stresses.…”

Section: Slip Transmission In the Bulksupporting

confidence: 89%

“…However, very little experimental data is available on the localization and transmission of plasticity in the material bulk as a function of the 3D grain structure. For example, it has recently been observed that the 3D grain structure is especially critical to understanding the origin of incipient localization in nickel-based superalloys [56]. The combination of DCT and topotomography [28,36] provides the unique capability to detect slip events as a function of the grain structure.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Observation of Bulk Plasticity in a Polycrystalline Titanium Alloy by Diffraction Contrast Tomography and Topotomography

Stinville,

Ludwig,

Callahan

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The mechanical properties of polycrystalline metals are governed by the interaction of defects that are generated by deformation within the 3D microstructure. In materials that deform by slip, the plasticity is usually highly heterogeneous within the microstructure. Many experimental tools can be used to observe the results of slip events at the free surface of a sample; however, there are only a few methods for imaging these events in the bulk. In this article, the imaging of bulk slip events within the 3D microstructure are enabled by the combined use of X-ray diffraction contrast tomography and topotomography. Correlative measurements between high-resolution digital image correlation, X-ray diffraction contrast tomography, topotomography and phase contrast tomography are performed during deformation of Ti-7Al to investigate the sensitivity of the X-ray topotomography method for the observation of slip events in the bulk. Much larger neighborhoods of grains were able to be mapped than in previous studies, enabling quantitative measurements of slip transmission. Significant differences were observed between surface and bulk grains, indicating the need for 3D observations of plasticity to better understand deformation in polycrystalline materials.

show abstract

Section: Slip Transmission In the Bulksupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Observation of Bulk Plasticity in a Polycrystalline Titanium Alloy by Diffraction Contrast Tomography and Topotomography

Stinville,

Ludwig,

Callahan

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…For example, in a highstrain-rate shock-loaded tantalum sample (gas-gun experiment), large misorientation gradients are observed within grains near the spallation front where significant voiding has occurred. 85 Furthermore, micron-scale annealing twins are resolved in the nickel-base superalloys Inconel 718 86 and Rene 65 87 by direct EBSD mapping of laser-ablated surfaces. Alnico magnets manufactured by AM using selective laser melting were also EBSD mapped directly from laser-ablated surfaces, despite the misorientation gradients, porosity, and range of grain sizes that exist as a result of the AM process.…”

Section: Direct Ebsd Imaging From Laser-ablated Surfacesmentioning

confidence: 99%

“…(a) EBSD grain maps collected directly from femtosecond laser-ablated surfaces from an Alnico magnet, 88 shock-loaded tantalum, 85 Inconel 718 and Rene 65 nickel-base superalloys. 86,87 (b) EBSD grain maps collected from femtosecond laser-ablated surfaces of Ti-6Al-4V, 90 a Heusler NiTiSn alloy, 91 Ti-Al and a spot weld on a single-crystal NiAlMo alloy that were all polished with a< 10 glancing-angle FIB beam (30 kV, 65 nA). All data collected with UCSB TriBeam prototype system.…”

Section: Combined Laser Ablation and Glancing-angle Fib Millingmentioning

confidence: 99%

“…[105][106][107] Nevertheless, a number of algorithms have been developed to solve the data fusion problem. For example, TriBeam data and synchrotron x-ray DCT data have been fused to study grain growth evolution in strontium titanate, 68,108 mechanical serial sectioning and nearfield x-ray HEDM information in a superalloy, 23 strain measurements by SEM-based digital image correlation (DIC) have been fused with TriBeam data to understand slip in superalloys, 86 and pore locations have been fused with TriBeam grain orientation information in tantalum 85 and an AM superalloy 70 to understand the processing routes and damage accumulation.…”

Section: Data Challenges and Opportunitiesmentioning

confidence: 99%

See 1 more Smart Citation

Recent Developments in Femtosecond Laser-Enabled TriBeam Systems

Echlin

Polonsky

Lamb

et al. 2021

JOM

Self Cite

View full text Add to dashboard Cite

Creep–Fatigue Interaction of Inconel 718 Manufactured by Electron Beam Melting

et al. 2023

View full text Add to dashboard Cite

Electron beam melting of Ni‐base superalloy Inconel 718 allows producing a columnar‐grained microstructure with a pronounced texture, which offers exceptional resistance against high‐temperature loading with severe creep–fatigue interaction arising in components of aircraft jet engines. This study considers the deformation, damage, and lifetime behavior of electron‐beam‐melted Inconel 718 under in‐phase thermomechanical fatigue loading with varying amounts of creep–fatigue interaction. Strain‐controlled thermomechanical fatigue tests with equal‐ramp cycles, slow–fast cycles, and dwell time cycles are conducted in the temperature range from 300 to 650 °C. Results show that both dwell time and slow–fast cycles promote intergranular cracking, gradual tensile stress relaxation, as well as precipitate dissolution and coarsening giving rise to cyclic softening. The interplay of these mechanisms leads to increased lifetimes in both dwell time and slow–fast tests compared to equal ramp tests at higher strain amplitudes. Conversely, at lower mechanical strain amplitudes, the opposite is observed. A comparison with results of conventional Inconel 718 indicates that the electron‐beam‐melted material exhibits superior resistance against strain‐controlled loading at elevated temperatures such as thermomechanical fatigue.

show abstract

Slip localization in Inconel 718: A three-dimensional and statistical perspective

Cited by 49 publications

References 53 publications

Observation of Bulk Plasticity in a Polycrystalline Titanium Alloy by Diffraction Contrast Tomography and Topotomography

Observation of Bulk Plasticity in a Polycrystalline Titanium Alloy by Diffraction Contrast Tomography and Topotomography

Recent Developments in Femtosecond Laser-Enabled TriBeam Systems

Creep–Fatigue Interaction of Inconel 718 Manufactured by Electron Beam Melting

Contact Info

Product

Resources

About