Data for In Situ TEM Mechanical Testing in Irradiated Oxide Dispersion Strengthened Alloys - v1.0. This is a dataset comprised of videos and raw load-displacement text files of experiments run to demonstrate the use of in situ TEM mechanical testing to find meaningful mechanical properties of as received, self-ion, and proton irradiated Fe-9%Cr ODS. The desire to work at small scale in characterization of irradiated materials to reduce costs and improve throughput, require the development of novel methods to assess mechanical properties in volume-limited irradiation damage layers. 

In this work micropillar compression (archived separately), cantilever bending, lamellae indentation, and clamped beam fracture testing is conducted on ion-irradiated Fe-9%Cr ODS to find yield stress, elastic modulus, flow stress, and fracture toughness. Micropillars in compression allow us to define a minimum sample dimension, which approaches the obstacle spacing of the material, at which size effects are observed. This relationship between sample dimension and obstacle spacing defined through micropillar compression is extended to a new testing geometry, cantilever bending, and material property, flow stress. Lessons learned during the cantilever bending informed the clamped beam design for conducting fracture testing on a ductile engineering alloy at micrometer scales. Finally, lamellae indentation was conducted to link qualitative observations of the microstructure under load with literature strength of obstacle values. By combining an understanding of the microstructure of irradiated Fe-9%Cr ODS and the in situ TEM technique, one can find the bulk-like mechanical properties of ion irradiated Fe-9%Cr ODS.

Micropillar Videos

As Received: https://doi.org/10.18122/B2VM5G

Fe²⁺ 3 dpa 500°C: https://doi.org/10.18122/B2QX4Z

Fe²⁺ 100 dpa 500°C: https://doi.org/10.18122/B2M41Z 

• In situ TEM cantilever bend testing of Fe-9%Cr ODS videos and load-displacement text files (v1.0)

  This dataset includes all original bright field transmission electron microscopic videos of each Fe-9%Cr ODS cantilever bend test conducted. It also includes the corresponding raw load-displacement data in text file format.

• In situ TEM clamped beam fracture of Fe-9%Cr ODS videos and load-displacement text files (v1.0)

  This dataset includes all original bright field transmission electron microscopic videos of each clamped beam test conducted on a model Fe-9%Cr ODS alloy. It also includes the corresponding raw load-displacement data in text file format.

• In situ TEM lamellae indentation of Fe-9%Cr ODS videos and corresponding MicroViBe videos (v1.0)

  These videos demonstrate the use of lamellae indentation for qualitative analysis and the use of the MicroViBe algorithm to better visualize and understand obstacles in Fe-9%Cr ODS.

• Text files for parts and assembly of clamped beam geometry ABAQUS finite element model (v1.0)

  These files are text format files for the ABAQUS extended finite element modeling (XFEM) as part of my dissertation.

Researchers should cite this work as follows:

• Yano, K. H.; Wharry, J. P. (2019). In Situ TEM Mechanical Testing of Irradiated Oxide Dispersion Strengthened Alloys. Purdue University Research Repository. doi:10.4231/100X-1R88

  BibTex | EndNote

1. Cantilever
2. Clamped Beam
3. Dissertation
4. Fe-9%Cr
5. In Situ
6. Lamellae Indentation
7. Materials Engineering
8. Materials Engineering (Dept)
9. Mechanical Testing
10. Micropillar
11. MicroViBe
12. Oxide Dispersion Strengthened
13. Size Effect
14. TEM