NPTEL : NOC:Welding Metallurgy (Metallurgy and Material Science)

Co-ordinators : Dr. Pradeep K. Jha


Lecture 1 - Introduction to welding metallurgy

Lecture 2 - Overview of Welding Processes

Lecture 3 - Introduction to phase diagrams

Lecture 4 - Phase diagram of Iron Carbon system

Lecture 5 - Phase diagram of non ferrous metals and alloys

Lecture 6 - Phase Transformations

Lecture 7 - Time Temperature Transformation Diagrams

Lecture 8 - Continuous Cooling Transformation Diagrams

Lecture 9 - Carbon Equivalent, Schaeffler Diagrams

Lecture 10 - Problem solving on Phase Diagrams

Lecture 11 - Introduction to strengthening mechanism in metals

Lecture 12 - Solid solution strengthening and grain refinement

Lecture 13 - Precipitation Hardening and Martensite Strengthening

Lecture 14 - Strain Hardening and Strain Ageing

Lecture 15 - Problem solving on strengthening mechanism in metals

Lecture 16 - Introduction to Heat treatment Processes in Welding

Lecture 17 - Hardening and Hardenability

Lecture 18 - Martempering and Austempering

Lecture 19 - Case Hardening methods

Lecture 20 - Heat treatment of Non-Ferrous metals and alloys

Lecture 21 - Heat Sources in Welding

Lecture 22 - Heat Flow in Welding

Lecture 23 - Temperature Distribution in Welding

Lecture 24 - Effect of Welding Parameters

Lecture 25 - Metallurgical effect of Heat Flow on Welding

Lecture 26 - Principles of Solidification in Welding

Lecture 27 - Solute redistribution during Solidification

Lecture 28 - Constitutional Supercooling

Lecture 29 - Microsegregation and Banding

Lecture 30 - Grain Structure during Solidification in Welding

Lecture 31 - Distinct Zones in Fusion Welded Specimen

Lecture 32 - Heat Affected Zone

Lecture 33 - Properties of Heat Affect Zone

Lecture 34 - Microstructural Products in Weldments

Lecture 35 - Introduction to Preheat and Postweld Heat Treatment

Lecture 36 - Preheat and Postweld Heat Treatment of Different Materials

Lecture 37 - Residual Stresses in Welding

Lecture 38 - Causes of Residual Stress Development in Welding

Lecture 39 - Measurement of Residual Stresses in Weldments

Lecture 40 - Controlling Residual Stresses in Weldments

Lecture 41 - Introduction to Welding Distortion

Lecture 42 - Types of Welding Distortions

Lecture 43 - Angular Distortions in Welds

Lecture 44 - Bowing, Buckling and Twisting in Welds

Lecture 45 - Control of Distortion in Welds

Lecture 46 - Introduction to Cracks in Welds

Lecture 47 - Types of Weld Cracks

Lecture 48 - Specific Weld Cracks

Lecture 49 - Chevron Cracks and Reheat Cracks

Lecture 50 - Lamellar Cracks and Stress Corrosion Cracking

Lecture 51 - Introduction to Weldability of Metals

Lecture 52 - Weldability of Carbon Steels

Lecture 53 - Weldability of Alloy Steels

Lecture 54 - Weldability of Cast Iron

Lecture 55 - Weldability of Non Ferrous Metals and Alloys

Lecture 56 - Introduction to Welding Defects

Lecture 57 - Surface and Subsurface Welding Defects

Lecture 58 - Issues in Welding: Design for Static Loading

Lecture 59 - Considerations for Fatigue Loading in Welding

Lecture 60 - Design Features for Fatigue and Static Loading in Welding