Refractory metals such as W, Mo, Ta, Nb, and Re have immense potential for application in plasma-facing materials in nuclear reactors, defense materials, aviation counterweights, heating elements in furnaces, and so forth. This book presents a wide perspective of oxide dispersion strengthened refractory alloys fabrication and critical properties. It provides a comprehensive road map for an appropriate basis for alloy design, process parameter selection, fabrication route, and deformation behavior for oxide dispersion strengthened refractory alloys. It further covers achievement of application-oriented properties and critical process-regulating parameters for development of sustainable materials.
Features:
- Covers development of oxide dispersion strengthened sustainable material to withstand high-temperature environments
- Describes stimulating application-oriented final mechanical properties
- Illustrates fabrication of alloys through effective route to achieve desired properties
- Presents in-depth explanation of deformation behavior at ambient and high temperatures
- Explores critical applications of the alloys in nuclear reactors, defense, and aviation sectors
Oxide Dispersion Strengthened Refractory Alloys will be of interest to graduate students and researchers in high-temperature materials, mechanics, metallurgy, powder metallurgy, and physical metallurgy.
Chapter 1 Refractory Metals: Fundamentals and Applications
1.1 Definition
1.2 Structure
1.3 Properties at a glance
1.4 Applications
1.5 Major shortcoming properties with respect to applications
1.6 Basics of nano-structured materials: Experimental and thermodynamic modelling based evidences
1.7 Inferences
References
Chapter 2 Principles of Oxide Dispersion Strengthening
2.1 Characteristics of oxides
2.2 Criteria of selection of oxides
2.3 Dispersion strengthening
2.4 Mechanism of oxide dispersion strengthening
2.5 Suitability of nano-oxide over micron size oxide dispersion
2.6 Effectiveness of dispersion strengthening by oxides
2.7 Inferences
References
Chapter 3 Processing Fundamentals
3.1 Conventional Melting-Casting
3.2 Limitations of Melting-Casting route
3.3 Mechanical Alloying
3.4 Rapid Solidification
3.5 Severe Plastic Deformation
3.6 Sol-Gel method
3.7 Chemical Vapor Deposition
3.8 Physical Vapor Deposition
3.9 Laser Ablation
3.10 Inferences
References
Chapter 4 Synthesis of Oxides Dispersion Strengthened Refractory Alloys
4.1 Effects of oxide dispersion on processing of refractory alloys
4.2 Phase evolution in oxide dispersion strengthened alloys
4.3 Microstructural characterization
4.4 Effect of process parameters on microstructural development
4.5 Inferences
References
Chapter 5 Consolidation Methods
5.1 Conventional Pressureless Sintering
5.2 Spark Plasma Sintering
5.3 Microwave Sintering
5.4 Hot Isostatic Pressing
5.5 Hydrostatic Extrusion
5.6 Powder Forging
5.7 Sinter Forging
5.8 Shock based Consolidation
5.9 High pressure Sintering
5.10 Inferences
References
Chapter 6 Densification of Consolidated Products
6.1 Mechanism of densification
6.2 Strategy to enhance densification
6.3 Role of densification on final applications
6.4 Inferences
References
Chapter 7 Mechanical Behavior
7.1 Hardness
7.2 Strength and Toughness
7.3 Mechanism of deformation at ambient and elevated temperature
7.4 Approach to improve Fracture Toughness
7.5 Wear properties
7.6 Inferences
References
Chapter 8 High Temperature Oxidation Characteristics
8.1 Oxidation of refractory alloys
8.2 Effect of oxide dispersion on oxidation of refractory alloys
8.3 Influencing factors on oxidation of oxide dispersion strengthened alloys
8.4 Methods to enhance oxidation resistance
8.5 Inferences
References
Chapter 9 Application Oriented Strategy
9.1 Application based influencing properties
9.2 Improvement of applicability
References
Chapter 10 Future Potential
10.1 Trend towards improvement of sustainability
10.2 Focus to extend application areas
References
Biography
Anshuman Patra is an assistant professor in the Department of Metallurgical and Materials Engineering, National Institute of Technology Rourkela, Odisha, India. He has 5 years industrial experience in the ferrous and aluminum industries. He has won several awards and accolades, including a university medal for 1st position in the Department of Metallurgical and Materials Engineering during his undergraduate study, the Indranil Award from the Mining, Geological & Metallurgical Institute of India, and Zero Abnormality monitoring and Kaizen awards during his tenure in the aluminum industry. He has published more than 20 research publications in international journals, has been the author and co-author of two books and has also delivered several invited talks. He is on the review board of several reputed journals and has also been certified as an outstanding reviewer by several Elsevier journals. He is also a life member of the Indian Science Congress Association, the Powder Metallurgy Association of India, and the Indian Institute of Metals. His research interests include high temperature metals and alloys, sintering, powder metallurgical processing, oxide dispersion and strengthened refractory alloys.
