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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium High Temperature Creep Properties of Advanced Structural Materials
Presentation Title Creep Behavior at Elevated Temperatures of Several Polycristalline Ni-based Superalloys Strengthened by MC-carbides
Author(s) Patrice Berthod, Safa Tlili, Dame Assane Kane
On-Site Speaker (Planned) Patrice Berthod
Abstract Scope Conventional casting allows producing components with complex geometries and coarse grains favorable for good creep resistance at high temperatures. Their weak points are generally their intergrains and interdendrites boundaries. Introducing carbon and MC-former metals can achieve the development of an intergranular and interdendritic network of eutectic carbides bringing the double benefit of a script-like geometry for the interdendrites cohesion, and of a good morphological and volume fraction stability on long times at high temperature. In this work two kinds of superalloys were obtained by high frequency induction foundry under inert atmosphere. The first ones are nickel-based superalloys and reinforced by ZrC carbides. The second ones are also nickel-based alloys but strengthened by (Ta,Hf)C carbides. All were subjected to 3-points bending creep tests at 1100°C for a maximal induced tensile stress equal to 20 MPa. They demonstrated high resistance despite the test temperature particularly high for superalloys produced by classical foundry.
Proceedings Inclusion? Planned:
Keywords High-Temperature Materials, Mechanical Properties, Sustainability

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Microstructure Sensitive Model to Account for the Non-isothermal Creep Behavior of Ni-based Single Crystal Superalloys
CALPHAD Alloy Design for Diffusion-mediated Plasticity-Induced Phase Transformations for Creep Resistant Multicomponent Principal Elemental Alloy
Creep and Creep-ratcheting Behaviour of Selective Laser Melted (SLM) Additively Manufactured (AM) Inconel 718
Creep and Tensile Properties of Five Novel, Computationally Designed Ni-based SX Superalloys
Creep Behavior at Elevated Temperatures of Several Polycristalline Ni-based Superalloys Strengthened by MC-carbides
Creep Behaviors of High-entropy Alloys
Creep Ratcheting of a HP+NbW (MA) Steam Methane Reformer Tube Alloy
Creep Simulations of Refractory High Entropy Alloys
Crystal Plasticity Creep Modeling in Cobalt Based Superalloys
Effect of Alloying Additions on Twinning in Ni-based Superalloys
Effect of the Casting Process on the Microstructure and Creep Properties of a Cast Ni-Based Alloy
F-1: A Study on Microstructure and Mechanical Properties of Fe-Cr-Ni-Al-V Alloys
F-2: Effects of Controlling Ti and Al on Microstructure and Mechanical Properties of Fe-Cr-Co-Al-Ti Ferritic Alloys
F-3: Strengthening Against Creep at Elevated Temperature of HEA Alloys of the CoNiFeMnCr Type Using MC-carbides
Induction of Alternative Shearing Pathways during Creep Deformation of Nickel Based Superalloys via Local Phase Transformation Strengthening
Mechanisms of Creep in Additively Manufactured NiCoCr and ODS-NiCoCr Multi-principal Element Alloys
Role of Cr Content on Creep-rupture Performance in Alumina-forming Austenitic Alloys
The Elevated Temperature Creep, Fatigue, and Fracture Behavior of Nickel-based Superalloys Manufactured by Direct Metal Laser Sintering
Thermal Creep Models Derived from a Comprehensive Multiple Heat 9Cr Tempered Martensitic Steels Database
Threshold Creep Behaviour of Ni-based Superalloy IN740H

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