研究目的
Investigating the effect of part orientation on stress distribution in AlSi10Mg specimens fabricated by laser powder bed fusion (L-PBF).
研究成果
The study demonstrated that part orientation significantly affects the residual stress distribution in AlSi10Mg specimens fabricated by L-PBF. The findings can be used to optimize part orientation and minimize support structures in AM design.
研究不足
The study is limited to AlSi10Mg alloy and flat specimens. The effect of more complex geometries and other materials was not investigated.
1：Experimental Design and Method Selection:
The study evaluates the effect of part orientation on stress distribution in AlSi10Mg specimens using the L-PBF process and the hole-drilling method for residual stress measurement.
2：Sample Selection and Data Sources:
Nine flat specimens of AlSi10Mg alloy were built along different orientations.
3：List of Experimental Equipment and Materials:
An EOSINT M 270 Dual Mode machine was used for specimen fabrication, and an MTS3000 RESTAN system by SINT Technology was used for residual stress measurement.
4：Experimental Procedures and Operational Workflow:
Specimens were fabricated, subjected to a stress relieving thermal treatment, and then measured for residual stresses using the hole-drilling method.
5：Data Analysis Methods:
The residual stresses were calculated according to the ASTM E837-13a standard using MATLAB R2009a.
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