Extended Data Fig. 7: FEM simulation of the stress concentration caused by the internal pores in the AMAlSi10Mg alloy and AM NTD-Al alloy.
From: Achieving ultrahigh fatigue resistance in AlSi10Mg alloy by additive manufacturing
(a) An example of the FEM model with an irregular LOF defect inside the AM AlSi10Mg alloy matrix. (b) Stress distribution near the typical LOF defect surface in the AM AlSi10Mg alloy under a nominal strain of 0.05%. (c) Stress distribution of a typical spherical pore in the AM NTD-Al alloy under a nominal strain of 0.05%. (d) Stress distribution of the typical spherical pore under a nominal strain of 0.31% when the stress of the matrix is close to the fatigue strength (~260 MPa). € Stress concentration factors of nine large irregular LOF defects in the AM AlSi10Mg sample and nine typical pores in the AM NTD-Al sample.
