About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation and Damage Mechanisms of High Temperature Alloys
|
Presentation Title |
Creep Behavior and Durability of Laser Metal Deposited Waspaloy |
Author(s) |
Romain Bordas, Roland Fortunier, Patrick Villechaise, Jonathan Cormier, Azdine Nait-Ali, Sébastien Rix, Lucie Rat |
On-Site Speaker (Planned) |
Romain Bordas |
Abstract Scope |
Creep tests have been performed using LMD-p processed Waspaloy. Different loadings were applied at 700 °C and 850 °C and along different directions. A significant morphological and cristallographic texture was identified as well as porosity. For each condition, a better creep life, a higher ductility and a longer tertiary creep were obtained along lasing direction compared to building direction. Despite similar primary and secondary creep stages, early onset of tertiary creep was systematically observed during creep along building direction. Interrupted tests were conducted to analyze damage mechanisms. Damage starts along specific grain boundaries and is controlled by the morphological texture. High pores density zones and large pores do not control cracks initiation but may contribute to crack (micro-)propagation. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Mechanical Properties, Additive Manufacturing |