Matches in SemOpenAlex for { <https://semopenalex.org/work/W4320180493> ?p ?o ?g. }
- W4320180493 endingPage "169215" @default.
- W4320180493 startingPage "169215" @default.
- W4320180493 abstract "Laser powder bed fusion (LPBF) additive manufacturing (AM) technology has been applied to manufacture complex components which have already been used in aerospace, biomedical, and many other fields. However, the LPBF-ed parts still suffer from porosity defects due to the rapid cooling solidification and complex molten pool flow during fabrication. These defects will affect the mechanical properties of the fabricated parts. Therefore, it is necessary to study LPBF pore defects and their formation mechanism, for further improving the development of LPBF technology. This paper carries out a systematic review on this topic. Firstly, the formation mechanisms are summarized based on the current in-situ imaging and modeling research. Secondly, the effects of porosity and pore characteristics (such as size, distribution, and shape) on tensile and fatigue properties are clarified based on the literature of defect characterization and mechanical properties testing. Thirdly, the control methods of the pore defects are characterized, including the laser energy distribution characteristics, processing parameters, powder feedstock, and in-situ laser remelting (ILR). Fourthly, the strategies to reduce pore defects are discussed, including process, laser post-processing remelting, and hot isostatic pressing (HIP). Finally, current research gaps and future directions are given in four aspects." @default.
- W4320180493 created "2023-02-13" @default.
- W4320180493 creator A5006951691 @default.
- W4320180493 creator A5007080908 @default.
- W4320180493 creator A5015105154 @default.
- W4320180493 creator A5018096955 @default.
- W4320180493 creator A5034843347 @default.
- W4320180493 creator A5035906229 @default.
- W4320180493 creator A5046225712 @default.
- W4320180493 date "2023-05-01" @default.
- W4320180493 modified "2023-10-14" @default.
- W4320180493 title "Pore defects in Laser Powder Bed Fusion: Formation mechanism, control method, and perspectives" @default.
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