Figure 9: Secondary electron scanning electron micrographs (SE/SEM) of Ti-6Al-4V high cycle fatigue fracture surfaces. | Scientific Reports

Figure 9: Secondary electron scanning electron micrographs (SE/SEM) of Ti-6Al-4V high cycle fatigue fracture surfaces.

From: Hydrogen-enabled microstructure and fatigue strength engineering of titanium alloys

Figure 9

(a) HSPT as-aged bi-modal microstructure that failed at 11.5 million cycles at 625 MPa, (b) HSPT as-aged globularized microstructure that failed at 16.4 million cycles at 575 MPa, and (c) vacuum-sintered coarse lamellar microstructure that failed at 3.4 million cycles at 400 MPa. It should be noted that the micron bar in (c) has a value approximately twice that of the other two.

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