研究目的
Investigating the effects of two-sided and simultaneous laser shock peening (TSLSP) on the fatigue properties and foreign object damage resistance of Ti-6Al-4V titanium alloy.
研究成果
TSLSP can significantly improve the fatigue properties of Ti-6Al-4V titanium alloy by producing high magnitude compressive residual stress. TSLSP-I achieves superior foreign object damage resistance and fatigue performance compared to TSLSP-D.
研究不足
The study focuses on Ti-6Al-4V titanium alloy and the effects of TSLSP on its fatigue properties and foreign object damage resistance. The findings may not be directly applicable to other materials or under different conditions.
1：Experimental Design and Method Selection:
TSLSP was used to strengthen the Ti-6Al-4V titanium alloy. The fatigue crack growth rate was investigated by fatigue test.
2：Sample Selection and Data Sources:
Dual phase Ti-6Al-4V titanium alloy with a thickness of 3 mm was selected.
3：List of Experimental Equipment and Materials:
A Q-switched Nd:YAG laser operating with a wavelength of 1064 nm and a pulse duration of 10 ns was used. Aluminum foils with a thickness of
4：1 mm were used as the absorbing layer. Experimental Procedures and Operational Workflow:
The laser spot diameter and overlap ratio were 3 mm and 50%, respectively. The laser treated area was a rectangle with dimensions of 18 ×
5：5 mmData Analysis Methods:
Residual stress measurements were performed by LXRD X-ray diffraction meter with sin2Ψ method.
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