The effect of rare earth addition on the microstructure and mechanical performances of as-cast and wrought Al alloys has been attracting increasing attention recently.Rare earth addition has great potential in modifyi...The effect of rare earth addition on the microstructure and mechanical performances of as-cast and wrought Al alloys has been attracting increasing attention recently.Rare earth addition has great potential in modifying the structure and improving the properties of materials.However,there are currently few reports about the effect of rare earth addition on the microstructure and performances of Al alloys prepared via selective laser melting.Here,AlSi10Mg alloys were manufactured using selective laser melting,and the effect of Er addition was investigated.The results indicate that Er addition leads toα-Al refinement and modifies the minority Si phase.The formation of the Al_(3)Er phase induced by Er addition enhances the stren gth of the material.Modification of the Si phase also increases ductility.This strategy can help improve the mechanical performance of alum inum alloys prepared via selective laser melting.展开更多
基金Project supported by the National Natural Science Foundation of China(51974092,U21A2043)Guangdong Basic and Applied Basic Research Foundation(2020A1515110136,2020B1515120065,2022B1515120066)Dongguan Science and Technology Special Agent Project(20221800500212)。
文摘The effect of rare earth addition on the microstructure and mechanical performances of as-cast and wrought Al alloys has been attracting increasing attention recently.Rare earth addition has great potential in modifying the structure and improving the properties of materials.However,there are currently few reports about the effect of rare earth addition on the microstructure and performances of Al alloys prepared via selective laser melting.Here,AlSi10Mg alloys were manufactured using selective laser melting,and the effect of Er addition was investigated.The results indicate that Er addition leads toα-Al refinement and modifies the minority Si phase.The formation of the Al_(3)Er phase induced by Er addition enhances the stren gth of the material.Modification of the Si phase also increases ductility.This strategy can help improve the mechanical performance of alum inum alloys prepared via selective laser melting.
