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Indexed by:会议论文

Date of Publication:2022-06-09

Volume:675-677

Page Number:803-806

ISSN No.:0255-5476

Key Words:LENS; FGM; SS316L; Ni25; Microstructure

Abstract:Functionally gradient materials(FGMs) were successfully fabricated with compositions gradually changed from 100% stainless steel 316L to 100% Ni25 alloy using laser engineered net shaping(LENS) technology. The microstructure characterization, composition analysis and microhardness along the gradient direction are investigated. Meanwhile, the defects in the sample such as cracks and pores are analyzed. The results indicated that the microstructure evolves from columnar dendrite to cellular-crystal or equiaxed dendrite.