Course11310709140 lectures
Thermo-Mechanical and Thermo-Chemical Processes
Prof. Vivek Pancholi and Prof. S. R. Meka · IIT Roorkee
About
Microstructural features like grain size, phase fraction and size distribution can be tailored by understanding and optimizing thermo-mechanical and thermo-chemical processes i.e. coupling the heat treatment either by introduction of mechanical energy into solids or by altering the chemistry of solids. Accordingly, several Thermo-Mechanical and Thermo-Chemical processes/treatments have been developed by the researchers. This course is designed to provide the fundamental science behind these processes so that optimal utilization of these processes is possible. Course will cover the utilization of flow stress data from hot deformation experiments to develop constitutive equations and processing maps, the interrelationship between microstructure and deformation features with the thermo-mechanical deformation processes. Important thermo-chemical processes such as nitriding, carburizing, carbonitriding, nitrocarburizing and boriding will be covered.
Intended audience: Final year B.Tech., M.Tech. and PhD scholars in Metallurgical Engineering or Materials Engineering. Practicing engineers in steel and aluminum industries.
Prerequisites: Mechanical Metallurgy, Physical Metallurgy, Basic Thermodynamics.
Lectures
Week 1
- Introduction to Thermomechanical Processes
- Conventional Thermomechanical Processes
- Non-conventional Thermomechanical Processes
- Stress and Strain
- Effect of Strain Rate and Temperature
Week 2
- Microstructure Evolution
- Dynamic Recovery
- Discontinuous Dynamic Recrystallization
- Dynamic Recrystallization : Critical Stress and Strain
- Continuous Dynamic Recrystallization (CDRX) and Geometrical Dynamic Recrystallization (GDRX)
Week 3
- Stereographic Projection
- Using Stereographic Projection
- Crystallographic Texture
- Crystallographic Texture:Texture Components
- Crystallographic Texture: Application
Week 4
- Constitutive Analysis
- Constitutive Analysis: Low Strain Rate
- Higher Strain Rate: Hot Working
- Constitutive Based Model : Physical Based Model
- Constitutive analysis : Case Study
Week 5
- Processing Maps : Deformation Mechanism maps
- Processing Maps : Dynamic Material Model
- Microstructure and Application
- Processing Maps : Different Models
- Processing Maps : Case Study
Week 6
- Equal Channel Angular Pressing (ECAP)
- Friction Stir Processing (FSP)
- Accumulative Roll Bonding (ARB)
- Multi Axial Forging (MAF)
- Severe Plastic Deformation : Case Study
Week 7
- Overview on Thermo-Chemical treatments
- Overview on Thermo-Chemical treatments (Contd.)
- Thermodynamic aspects of thermo-chemical treatments: Preliminaries
- Thermodynamics of Gaseous Nitriding - I
- Thermodynamics of Gaseous Nitriding - II
Week 8
Syllabus and materials
At NPTEL, as the course publishes them.
Credits and licence
- Institution
- IIT Roorkee
- Department
- Metallurgy and Material Science
- Taught by
- Prof. Vivek Pancholi, Prof. S. R. Meka
- Level
- Undergraduate
- Language
- English
- Subjects
- Engineering
- Source
- NPTEL
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
- Who can watch
- NPTEL gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed