Title：Residual stress analysis on samples obtained byadditive fabrication: Cases of Nimonic C263 alloy & TiAl

Time:Dec 09,2020 16:30-17:30

Location: https://meeting.tencent.com/s/6WHejhkbPtUp

Meeting ID: 642 747 534

Speaker：Vincent JI

Abstract:

Residual stress can be generated duesto additive fabrication process. They can influence components’ utilisationproperties and their durability. It is important to determine the level and thedistribution of residual stress on samples obtained by additive fabrication.

Nimonic C263 powders (Ni-based alloy) have been used tofabricate samples by SLM (Selective Laser Melting) and DMD (Direct MetalDeposition) techniques. TiAl samples have been obtained by DMD technique.

The residual stresses have beenanalysis by X-ray diffraction method on Nimonic C263 samples and on TiAl samples after additive fabrication and after heat treatments.

Mechanical properties (tensile testsand hardness) have been studied on Nimonic C263 samples and the associatedmicrostructure has been observed.