研究目的
To find a relationship between the AM process parameters and the MTS parameters, the effect of process parameters on the mechanical properties of selective laser-melted (SLM) Ti-6Al-4V samples was studied.
研究成果
The study successfully introduced a new way to predict the deformation behavior of additively manufactured materials using the MTS model. The model showed great validity with relatively low errors in the cross-validation technique, remaining computationally efficient. This approach can be updated by adding more data and including more process parameters in the training section.
研究不足
The model only works for samples tested in the building direction and uses only two main process parameters (laser power and scan speed) due to the shortage in the data. The study was limited to 10 samples, and the model's accuracy could be improved with more data.
1：Experimental Design and Method Selection:
The study utilized the mechanical threshold stress (MTS) model to predict the flow stress behavior of SLM Ti-6Al-4V samples. The MTS model parameters were adjusted based on the microstructure changes due to different AM process parameters.
2：Sample Selection and Data Sources:
Near fully dense (around 99%) SLM Ti-6Al-4V samples built using different processing parameters were studied. Tensile test samples tested in the building direction were used for consistency.
3：List of Experimental Equipment and Materials:
Selective laser melting (SLM) was used to fabricate the Ti-6Al-4V samples. The process parameters included laser power, scan speed, layer thickness, and hatch space.
4：Experimental Procedures and Operational Workflow:
The deformation behavior of the samples was extracted from the literature. A least-squares fit was used to find the MTS parameters for each sample.
5：Data Analysis Methods:
The relationship between AM process parameters and MTS parameters was studied using linear regression models. The model's validity was tested using a cross-validation method.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
