Comparison of microstructure and mechanical properties between laser additive manufacturing and sand casting of AlSi10Mg alloy
Microstructure and mechanical properties of AlSi10Mg alloy test bars were studied with two proven processes in the additive manufacturing(AM)industry,i.e.selec-tive laser melting(SLM)and sand casting.The test results show that the performance of supported test bars are different when placed in different directions.SLMed test bars placed at 0°,45°,90° have significant directional difference,a progressive increase of 20 MPa at 90°,45°,0°.It can be eliminated with 300 ℃2 h stress relieving annealing.AlSi10Mg alloy was also studied when formed by SLM and 3 DP processes.The mechanical properties and stability of the SLMed one are significantly better than those of the 3DPed one.
万方数据
维普
