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Article
Open AccessUnderstanding the Subsurface Microstructure and Thermal Behavior of Model Oxide Dispersion Strengthened Alloys Through FIB_SEM and TEM
A potential but an underexplored application of FIB_SEM is its ability to image the subsurface microstructure and capability for an associated chemical analysis. In this article, agglomerated microstructures o...
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Chapter and Conference Paper
A Study on Effects of Synthetic Data for Predicting the Remaining Useful Life of Aluminium Electrolytic Capacitors Using Bagging-Based Ensemble Learning
Aluminium electrolytic capacitors (AECs) are crucial components used in power supplies, computer motherboards, and variable frequency drives for ripple filtering and energy storage. Their performance is affect...
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Article
A Better Understanding of Solidification of Alloys Through Study of Glass/Crystal Composites
Metallic glasses are non-crystalline solids which form when crystal nucleation and growth is precluded either fully or partly. In the event of a partial suppression of crystal formation, a solid result which h...
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Article
Open AccessMicrostructural Characterization of Novel ZrO2 Dispersion-Strengthened 9Cr Steel by Spark Plasma Sintering
Technologically important Oxide Dispersion-Strengthened steels are synthesized using ZrO2 as a dispersion strengthener instead of conventionally used Y2O3. Powder metallurgical route followed by spark plasma sint...
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Article
Quantification of Shear Strain Development in the Through-Thickness Direction During Sliding Wear
Quantifying strain in a deformation mechanism like wear can be critical to enhancing knowledge on structure–property correlation, especially for systems that show strain-induced phase transformations. In this ...
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Article
The Defining Role of Micro-fissures on the Mechanical Behavior of Laser-Welded Fully Austenitic Stainless Steel
Laser-welded fully austenitic stainless steel (AISI 316LN) weldments revealed the presence of micro-fissures. They appeared at the grain boundaries, near the center of the welds. The grain boundaries, however,...
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Article
Contiguous hetero-structures and co-existing morphological derivatives of preferentially grown carbo-nitrides in long-term aged SS 316LN with varying nitrogen concentration
SS 316LN with varying nitrogen content is subjected to thermal aging for 20,000 h at 650 °C to assess long-term structural integrity under operational conditions in nuclear reactors. While the annealing twins ...
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Article
Comparison of Microstructure and Microtexture Evolution in 9Cr and 18Cr Oxide Dispersion-Strengthened Steels during Fuel Clad Tube Fabrication
Oxide dispersion-strengthened (ODS) ferritic steels are being considered as a potential candidate for core structural application in future fast reactors. The 9Cr ODS steel being ferritic–martensitic in the st...
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Article
Structure and Texture of Oxide Dispersion Strengthened Alloy 617 for Very High Temperature Applications
High energy mechanically milled Alloy 617 ODS powder was consolidated by Spark Plasma Sintering (SPS) technique and subsequently annealed at 650 °C and 1050 °C (923 K and 1323 K). Microstructure and microtextu...
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Article
Controlling the morphology of nanocrystalline Y(OH)3 powders synthesized by microwave-hydrothermal route and effect of annealing
Y(OH)3 is the main precursor material to inherit desirable morphologies for Y2O3. The Y(OH)3 and Y2O3 are an important substitution for luminescent matrix and useful in temperature sensing applications. Nanostruc...
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Chapter and Conference Paper
Imaging Dislocation Cores in Severe Plastically Deformed Nanocrystalline CP-Ti Alloy Through Geometrical Phase Analysis of Spherical Aberration-Corrected HRTEM Images
An attempt has been made here to map localized strain (lattice distortion) by means of interpretation of direct contrast of high-resolution aberration-corrected TEM images. The technique is intriguing since th...
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Article
Influence of Texture on Deformation Mechanism of Hot Extruded Oxide Dispersion Strengthened 18Cr Ferritic Steel
This paper focuses on studying the influence of texture on the deformation mechanism of oxide dispersion strengthened (ODS) 18Cr ferritic steel subjected to high-temperature tensile testing after consolidation...
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Article
Application of 3D EBSD Technique to Study Crystallographic Texture in Heavily Cold-Rolled and Recrystallized Modified 9Cr–1Mo Steel
Automated electron backscatter diffraction (EBSD) technique in a dual-beam field emission gun scanning electron microscope has been successfully used to obtain three-dimensional (3D) orientation map** of gra...
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Article
EBSD Study on Processing Domain Parameters of Oxide Dispersion Strengthened 18Cr Ferritic Steel
This paper presents the results of an experimental study aimed to identify hot working domains in oxide dispersion strengthened (ODS) 18Cr ferritic steel over a wide range of temperatures (1323-1473 K) and str...
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Article
Direct structure imaging of partially collapsed omega domains in phase-separated V–Ti alloy through atom column contrast interpretation
The metastable ω phase stabilizes either in hexagonal (P6/mmm) or trigonal ( \( P\overline{3} m1 \) ...
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Article
Microstructural Evolution of Nanocrystalline ZrO2 in a Fe Matrix During High-Temperature Exposure
The current study examines the evolution of nanocrystallites of ZrO2 with time and temperature in a Fe-ZrO2 composite. The crystallite sizes were determined through X-ray peak broadening analysis by the Williamso...
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Article
A Study of Tensile Flow and Work-Hardening Behavior of Alloy 617
The simple power relationship σ = Κε p n satisfactorily expresses the tensile flow behavior of many metals and alloys in ...
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Article
Effect of Annealing Treatment on Σ3-Type CSL Boundaries and Its Interactions in 304HCu Grade Austenitic Stainless Steel
This paper presents the results of a study on grain boundary characteristics in cold deformed and annealed 304HCu grade austenitic stainless steel (SS 304HCu) using electron backscatter diffraction. The micros...
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Article
Effect of Laser Surface Melting on the Microstructure and Pitting Corrosion Resistance of 304L SS Weldment
The manuscript presents the effect of laser surface melting (LSM) on the microstructural variations and pitting corrosion resistance of 304L SS weldment fabricated by gas tungsten arc welding of 304L SS plates...
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Article
Structural Studies of Dispersoids in Fe–15 wt% Y2O3–5 wt% Ti Model ODS Alloys During Milling and Subsequent Annealing
Oxide dispersion strengthened (ODS) steels have very high thermal stability and creep resistance due to reinforcement of hard and stable nano-sized ceramic dispersoids in metallic matrix which act as barriers ...
