PSI - Issue 60

Gopal Sanyal et al. / Procedia Structural Integrity 60 (2024) 311–323 Author name / Structural Integrity Procedia 00 (2019) 000–000

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up to the maximum load. After testing the samples were cleaned and subjected to observation under stereomicroscope and scanning electron microscope (SEM) for fractographic examination. Duplicate tests were caried out on all the tensile and fracture toughness experiments.

3. Results and Discussion Representative engineering stress-strain plot for tensile tests carried out at air and using in-situ charging with a current density of 40 mA/cm 2 has been shown in Fig.4. It is observable that the application of in-situ charging, results in a significant reduction in tensile ductility.

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Figure 4. Stress-strain plot comparing the tensile behavior of Cr-Mo-V-Ni steel in air and in-situ experiment at room temperature.

The loss of tensile ductility is more dramatic in terms of reduction of area that is shown as a bar chart in Fig5. The reduction of areafor the sample tested in air is ~85% and after testing in the in-situ bath is in the range 6 – 10%. This represents a reduction of over 90%.