Abstract
In this work a thermodynamic peculiarities of fatigue crack propagation at titanium alloy Ti64 after laser shock peening were studied. The plane samples were weakened by notch to initiate fatigue crack. An area around notch was processed by laser shock peening. This made it possible to create a compress residual stress up to 1 mm depth. The infrared thermography method was used to analyze a temperature field at crack tip. An increase in heat dissipation during fatigue crack propagation after laser shock peening was found.
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