Fig. 6: Results of Charpy V-notch impact and fatigue tests for the ultrastrong and ductile steel welds. | Nature Communications

Fig. 6: Results of Charpy V-notch impact and fatigue tests for the ultrastrong and ductile steel welds.

From: Ultrastrong and ductile steel welds achieved by fine interlocking microstructures with film-like retained austenite

Fig. 6

a Absorbed energy values after impact tests. b SEM micrographs showing the fractured surface in the 1.0 GPa steel welds after the impact test at −40 °C. c Fatigue strength curves. All the error bars in a represent the standard deviation (n = 5 independent experiments).

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