Marion Coffigniez
Post-doctoral researcher
Dr. at INSA Lyon in 2021

Main project: Additive manufacturing of beta-metastable titanium alloys
Funding: FNRS
Supervisor(s): Pascal Jacques

High resistance to both damage nucleation and void coalescence has been observed in beta-metastable titanium alloys presenting both transformation-induced plasticity and twinning-induced plasticity effects. These alloys could therefore be particularly suitable for additive manufacturing since their extremely high ductility is not impacted by the presence of defects induced by the Selective Laser Melting (SLM) process. However, in the case of the Ti12Mo previously studied at IMAP, the SLM process induces the formation of omega precipitates that embrittle the as-built samples. The idea of this project is thus to work on alloy design to keep the TRIP/TWIP effects but to avoid the precipitation of the omega phase during the SLM process.

IMMC main research direction(s):
Processing and characterisation of materials

additive manufacturing
metallic alloys
selective laser melting (slm)

Research group(s): IMAP