READ ME File

Dataset DOI: 10.5258/SOTON/PG/D128

ReadMe Author: Joseph Doyle, University of Southampton ORCID ID 0009-0005-5685-6435 

This dataset supports the thesis entitled: Study of fatigue crack propagation in single crystal nickel-based superalloys at an intermediate service temperature: effects of crystallographic orientation, oxidation and dwell times

AWARDED BY: University of Southampton
DATE OF AWARD: [2026]

Date of data collection: from October 2021 to October 2025

Information about geographic location of data collection: University of Southampton, U.K.

Date that the file was created: May, 2026

This dataset contains:

Data supporting the aforementioned thesis in excel files.

The figures are as follows:

Figure 4.10 - Average percentage volume increase of carbides on the surface of SRR-99 oxidised at 550 °C
Figure 4.13 - a) External oxidation thickness measured through 3D imaging reconstruction, b) oxidation kinetics of SRR-99, CMSX-4 and CMSX-10 at 550 °C as a function of internal scale thickness 
Figure 5.5 – Crack length against time of CMSX-4 under constant ΔK=20MPa√m at 450 °C alternating between high and low frequencies 
Figure 5.7 – Effect of frequency on the crack growth rate of CMSX-4 at 450 °C (at constant ΔK=20MPa√m) on basis of a) cycles and b) time
Figure 6.2 – Fatigue crack propagation rates for CMSX-4 at 550 °C under constant load using a 1-1-1-1 loading waveform comparing OA and OB 
Figure 6.3 – Fatigue crack propagation rates for CMSX-10 at 550 °C under constant load using a 1-1-1-1 loading waveform comparing OA and OB
Figure 6.24 – The effect of crack deflection on the ΔK for a given crack depth in CMSX-4 OB
Figure 7.1 – Fatigue crack propagation rates comparing 1-90-1-1 dwell tests with the baseline 1-1-1-1 tests in air and inert gas (IG) for CMSX-10 at 550 °C 
Figure 7.2 – Fatigue crack propagation rates comparing 1-90-1-1 dwell tests with the baseline 1-1-1-1 tests in air and inert gas (IG) for SRR-99 at 550 °C 
Figure 7.31 – FCP rates comparing 1-90-1-1 dwell tests with the baseline 1-1-1-1 tests in air and inert gas (IG) for CMSX-10, including FCP rate of 1-90-1-1 IG with recalculated ΔKeff  values