About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
Electron Beam Selective Melting of IN738LC Alloy; Defects Control, Microstructural Characterization and Mechanical Properties |
Author(s) |
Yang Li, Feng Lin |
On-Site Speaker (Planned) |
Yang Li |
Abstract Scope |
Non-weldable nickel-base superalloys, are irreplaceable materials for producing the aircraft turbine blades, which is usually produced by casting. But the mechanical properties are limited by defects such as cold shut, porosity and shrinkage. In this study,a non-weldable nickel-base superalloys, IN738LC superalloy specimens are succesfully prepared by Electron Beam Selective Melting. A new defect-free criterion is established and the processing window is determined in the defect-free specimens. The columnar crystal and single crystal are controllable to be prepared. The tensile tests at different temperature are conducted on the parallel to building direction (PBD) specimens and the orthogonal to building direction (OBD) specimens respectively. Different fracture mechanisms in PBD specimens and OBD specimens are identified by the fractographical analyses. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |