General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-24-0598
Thesis topic details
Category
Technological challenges
Thesis topics
A better understanding of diffusion welding in a+ß titanium alloy
Contract
Thèse
Job description
As part of a short-term nuclear project, the CEA/LITEN is supporting the manufacturing activities of a titanium alloy steam generator by HIP (Hot Isostatic Pressing). Depending on its thermal and/or thermomechanical history, the alloy Ti64 presents phases in different proportions, chemical compositions and crystallographic structures.
How does diffusion welding take place between two different phases? Is there one that cross the interface preferentially and if yes, why? Which HIP parameters have a real influence? What starting microstructure allows optimal diffusion welding?
These are the questions that the thesis should answer.
University / doctoral school
Sciences de la Matière (ED482)
INP Toulouse
Thesis topic location
Site
Grenoble
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
PIOZIN Emma 
emma.piozin@cea.fr
CEA
DRT/DTCH//LCA
17 avenue des Martyrs
38054 Grenoble Cedex
04 38 78 96 26
Tutor / Responsible thesis director
VIGUIER Bernard Bernard.Viguier@ensiacet.fr
ENSIACET
CIRIMAT/MEMO, UMR CNRS 5085
ENSIACET
4 allée Emile Monso - BP44362
31030 Toulouse cedex 4
05 34 32 34 31
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