HRDIC Strain Localization in Shot Peened Nickel Superalloy at 450°C

Alberto Orozco‐Caballero from the University of Manchester created a dataset of high-resolution digital image correlation (HRDIC) measurements on a nickel superalloy. It contains full-field in-plane displacement and shear strain maps from 7 image mosaics, covering a 950x420 micron area before and after 6 tensile deformation steps at 450°C. The data was generated using a FEI Magellan HR 400L FE-SEM and correlated with LaVision's DaVis 8.3 software.

Use Cases

• Analyze strain distribution evolution based on the 6 deformation steps described.
• Study the effect of shot peening on strain localization based on the surface preparation method.
• Validate computational models of high-temperature deformation based on the full-field displacement maps.
• Investigate speckle pattern stability for DIC at elevated temperatures based on the described gold remodelling and stabilization process.

Strengths

• High spatial resolution of approximately 335 nm for strain measurement, as derived from the DIC sub-window size.
• Large field of view covering 950x420 microns, composed of mosaics of 30x15 individual images.
• Includes data from multiple deformation states (1 undeformed and 6 deformed), enabling temporal analysis.
• Detailed documentation of the sample preparation, imaging, and correlation methodology is provided.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and overall dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Manchester

Collection Method

High-resolution digital image correlation (HRDIC) on a shot peened nickel superalloy sample deformed in tension at 450°C.