| Titre : |
Effect of a Prior Plastic Deformation during Heat Treatments on the Mechanical Properties of Ni-Based Superalloys for Turbine Blade Application |
| Titre original : |
Effet d'une pré-déformation plastique au cours des traitements thermiques sur les propriétés mécaniques des superalliages base Ni pour l'application d'aubes de turbine |
| Type de document : |
thèse |
| Auteurs : |
Satoshi UTADA, Auteur ; Patrick VILLECHAISE, Directeur de thèse ; Jonathan CORMIER, Directeur de thèse ; Jérémy RAME, Directeur de thèse ; Institut PPRIME UPR CNRS 3346 - PMM, Commanditaire ; Bernard VIGUIER, Rapporteur ; Roger C. REED, Rapporteur ; Pedro PORTELLA, Examinateur ; Florence PETTINARI-STURMEL, Examinateur |
| Importance : |
192 p. |
| Note générale : |
NNT 2020ESMA0019
Table of Contents
General Introduction
Abstract
Keywords |
| Catégories : |
Alliages réfractaires
Déformations (mécanique)
Durée de vie (ingénierie)
Matériaux:Détérioration
Matériaux:Effets des hautes températures
Matériaux:Fluage
Métaux:Traitement thermique
Microstructure (physique)
Nickel:Alliages
Plasticité
|
| Résumé : |
LITERATURE REVIEW AND RESEARCH BACKGROUND
Cast Ni-Based Superalloys for Turbine Blade Application
High-Temperature Deformation and Durability of Superalloys
Pre-Straining Effect
Previous Experimental Results
Research Objectives
EXPERIMENTAL PROCEDURES
Materials
Specimen Preparation
Tensile Plastic Deformation (Pre-Deformation)
Heat Treatment
Creep Tests
Very High Cycle Fatigue Tests
Microstructure Characterizations
MICROSTRUCTURE EVOLUTION AFTER PRE-DEFORMATION AND REJUVENATION TREATMENT
Introduction
Tensile Pre-Deformation of Experimental Materials
Microstructure Evolution during Aging Treatments of AM1 after Pre-Deformation
Microstructures of AM1 after High-Temperatures Pre-Deformation
Effect of Chemical Compositions on the Microstructure Evolution Behavior
Rejuvenation Treatment on the Pre-Deformed Materials
Summary
CREEP DAMAGING MECHANISMS OF PRE-DEFORMED NI-BASED SINGLE CRYSTAL SUPPERALLOYS
Introduction
Creep Damaging Mechanisms of SX Superalloys with Pre-Deformation at RT
Examination of Damage Localization using Different Materials Histories and Test Conditions
Summary
VHCF PROPERTIES OF PRE-DEFORMED AM1 SX SUPERALLOY
Introduction
Fractographic Observations
Microstructure Characterization of Specimen's Longitudinal Section
Effect of Pre-Deformation in Fully Reversed Condition R=-1
Enhanced Shearing and Recrystallization at Positive Stress Ratio Condition, R=0.5
VHCF Life Restoration by Rejuvenation Heat Treatment
Summary
GENERAL CONCLUSIONS AND PERSPECTIVES |
| En ligne : |
https://tel.archives-ouvertes.fr/tel-03166502 |
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