研究目的
Investigating the influence of laser drilled recast layer thickness on the fatigue performance of CMSX-4.
研究成果
The proposed model provides satisfactory prediction responses based on laboratory testing and type of cooling hole shape investigated. It can be applied for understanding of the correlation between the laser drilling parameters, recast layer thickness, and fatigue performance. Also, the proposed model could be applied for parameters optimisation where an increase in productivity demands an increase in the drilling time.
研究不足
The model is suitable for laser trepan drilling of CMSX-4 acute angled cooling holes. Other effusion-shaped cooling holes, such as fan shaped, need further investigation because the laser parameters and hole geometry influence on the recast layer thickness might be different.