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Chapter and Conference Paper
Tensile Properties of Inconel 718 Produced by LMD-Wire
The in of Wire Laser Metal Deposited has been investigated from room temperature up to 750 °C at a strain rate of 5.0 10–4 s−1. These properties have been investigated along, at 45° and perpendicular to t...
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Article
The Constant-Stress, Constant-Heating-Rate Test: A Novel Method for Characterizing Transient Mechanical Behavior of Metallic Materials
A novel mechanical test for characterizing the transient, on-heating mechanical behavior of metallic structural materials was developed. It comprises the continuous heating of a specimen at a constant rate whi...
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Article
Influence of Joule Effect Heating on Recrystallization Phenomena in Inconel 718
In this article, the Joule effect heating influence on recrystallization phenomena in the Inconel 718 nickel-based superalloy is investigated in details. On the one hand, static recrystallization kinetic studi...
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Article
The Application of Differential Scanning Calorimetry to Investigate Precipitation Behavior in Nickel-Base Superalloys Under Continuous Cooling and Heating Conditions
A suite of experimental tools and fast-acting, numerical-simulation techniques was used to quantify the precipitation behavior of three nickel-base superalloys: IN-100, LSHR, and 718. Experimental methods comp...
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Article
High Temperature Oxidation Behavior of Conventional and Nb-Modified MAR-M246 Ni-Based Superalloy
The present investigations focused on the thermal oxidation of two variants of MAR-M246 alloy having the same contents of Ta and Nb in at. pct, considering the effects of total replacement of Ta by Nb. The all...
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Article
In-Situ Determination of Precipitation Kinetics During Heat Treatment of Superalloy 718
Two in-situ test techniques were used to obtain insight into the isothermal precipitation kinetics of γ″ and γ′ in superalloy 718. The first method consisted of measurements of Young’s modulus using a dynamic-res...
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Article
A Fast-Acting Method for Simulating Precipitation During Heat Treatment of Superalloy 718
A fast-acting, mean-field method for simulating precipitation of the γ′′ and γ′ phases during aging of superalloy 718 following super-delta-solvus solution treatment was formulated and validated using observation...
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Chapter and Conference Paper
Strain Monitoring During Laser Metal Deposition of Inconel 718 by Neutron Diffraction
In this study, we provide novel in situ of during laser metal deposition of by . Thermal, phase and stress-related contributions to the lattice parameter evolution are addressed for the representative r...
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Chapter and Conference Paper
Creep, Fatigue, and Oxidation Interactions During High and Very High Cycle Fatigue at Elevated Temperature of Nickel-Based Single Crystal Superalloys
High-temperature of Ni-based single crystal is studied at 1000 °C in a wide range of loading conditions (−1 ≤ R ≤ 0.8) and number of cycles (103 − 109). Under fully reversed conditions, a competition between ...
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Chapter and Conference Paper
Tuning Strain Localization in Polycrystalline Nickel-Based Superalloys by Thermomechanical Processing
processing routes used to produce that minimize plastic strain localization at the sub-grain scale in polycrystalline \(\gamma -\gamma \) γ - γ ’ nickel- superalloy. This novel is made possible ...
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Article
Foreword
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Article
Mechanical Properties Evolution of γ′/γ″ Nickel-Base Superalloys During Long-Term Thermal Over-Aging
The long-term stability of Inconel 718 and Waspaloy forgings in the 600 °C to 850 °C temperature range and up to 10,000 hours was studied by means of mechanical tests and microstructural analyses. Hardness and...
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Article
Open AccessInvestigating the Dislocation-Driven Micro-mechanical Response Under Non-isothermal Creep Conditions in Single-Crystal Superalloys
The creep responses of the superalloy CMSX-4 under thermal cycling conditions (900 °C to 1050 °C) and constant load ( $$ \sigma_{0} = 200 MPa $...
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Article
Very High Cycle Fatigue of Ni-Based Single-Crystal Superalloys at High Temperature
Very high cycle fatigue (VHCF) properties at high temperature of Ni-based single-crystal (SX) superalloys and of a directionally solidified (DS) superalloy have been investigated at 20 kHz and a temperature of...
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Article
On the Occurrence of Liquation During Linear Friction Welding of Ni-Based Superalloys
A combination of experimental and analytical methods was used to study the possible occurrence of liquation during LFW of the newly developed AD730TM Ni-based superalloy. LFWed joints were produced using a semi-i...
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Article
Open AccessKinetics and Mechanisms of γ′ Reprecipitation in a Ni-based Superalloy
The reprecipitation mechanisms and kinetics of γ′ particles during cooling from supersolvus and subsolvus temperatures were studied in AD730TM Ni-based superalloy using Differential Thermal Analysis (DTA). The ev...
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Article
Role of Powder Granulometry and Substrate Topography in Adhesion Strength of Thermal Spray Coatings
APS coating is deposited with different treated surfaces to understand the effects of surface topography and particle sizes on adhesion bond strength. Grit blasting and laser surface texturing have been used t...
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Chapter
Microstructure Evolution during Thermal Aging of Inconel 718
The Inconel 718 superalloy was subjected to isothermal and cyclic thermal annealing at 750°C to assess its expected use at higher temperatures. Mcrostructure evaluation during isothermal annealing and thermal ...
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Article
Foreword
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Article
Plasma nitriding response at 400 °C of the single crystalline Ni-based superalloy MC2
Plasma nitriding of MC2, a single crystalline (γ/γ′) Ni-based superalloy, was performed at 400 °C for 1 and 4 h. Owing to its monomodal γ′ particle size distribution, MC2 was used as a model material in an att...
