Welding Metallurgy, 2ed

Sindo Kou

ISBN: 9788126560325

480 pages

Exclusively distributed by CBS Publishers & Distributors 


Welding Metallurgy by Sindo Kou has been used worldwide as a reference book for welding practitioners and researchers since it was published in 1987. It has also been used for teachingc welding in universities in more than ten different countries. Significant progress has been made in the field of welding metallurgy in the past 13 years and a second edition of the book is therefore badly needed.

I Introduction

1 Fusion Welding Processes


2 Heat Flow in Welding


3 Chemical Reactions in Welding


4 Fluid Flow and Metal Evaporation in Welding

4.1 Fluid Flow in Arcs

4.2 Fluid Flow in Weld Pools

4.3 Metal Evaporation

4.4 Active Flux GTAW


5 Residual Stresses, Distortion and Fatigue

5.1 Residual Stresses

5.2 Distortion

5.3 Fatigue

5.4 Case Studies


II The Fusion Zone

6 Basic Solidification Concepts

6.1 Solute Redistribution during Solidification

6.2 Solidification Modes and Constitutional Supercooling

6.3 Microsegregation and Banding

6.4 Effect of Cooling Rate

6.5 Solidification Path


7 Weld Metal Solidification I: Grain Structure

7.1 Epitaxial Growth at Fusion Boundary

7.2 Nonepitaxial Growth at Fusion Boundary

7.3 Competitive Growth in Bulk Fusion Zone

7.4 Effect of Welding Parameters on Grain Structure

7.5 Weld Metal Nucleation Mechanisms

7.6 Grain Structure Control


8 Weld Metal Solidification II: Microstructure within Grains

8.1 Solidification Modes

8.2 Dendrite and Cell Spacing

8.3 Effect of Welding Parameters

8.4 Refining Microstructure within Grains


9 Post-Solidification Phase Transformations

9.1 Ferrite-to-Austenite Transformation in Austenitic Stainless Steel Welds

9.2 Austenite-to-Ferrite Transformation in Low-Carbon, Low-Alloy Steel Welds


10 Weld Metal Chemical Inhomogeneities

10.1 Microsegregation

10.2 Banding

10.3 Inclusions and Gas Porosity

10.4 Inhomogeneities Near Fusion Boundary

10.5 Macrosegregation in Bulk Weld Metal


11 Weld Metal Solidification Cracking

11.1 Characteristics, Cause and Testing

11.2 Metallurgical Factors

11.3 Mechanical Factors

11.4 Reducing Solidification Cracking

11.5 Case Study: Failure of a Large Exhaust Fan


III The Partially Melted Zone

12 Formation of the Partially Melted Zone

12.1 Evidence of Liquation

12.2 Liquation Mechanisms

12.3 Directional Solidification of Liquated Material

12.4 Grain Boundary Segregation

12.5 Grain Boundary Solidification Modes

12.6 Partially Melted Zone in Cast Irons


13 Difficulties Associated with the Partially Melted Zone

13.1 Liquation Cracking

13.2 Loss of Strength and Ductility

13.3 Hydrogen Cracking

13.4 Remedies


IV The Heat-Affected Zone

14 Work-Hardened Materials

14.1 Background

14.2 Recrystallization and Grain Growth in Welding

14.3 Effect of Welding Parameters and Process


15 Precipitation-Hardening Materials I: Aluminum Alloys

15.1 Background

15.2 Al--Cu--Mg and Al--Mg--Si Alloys

15.3 Al--Zn--Mg Alloys

15.4 Friction Stir Welding of Aluminum Alloys


16 Precipitation-Hardening Materials II: Nickel-Base Alloys

16.1 Background

16.2 Reversion of Precipitate and Loss of Strength

16.3 Postweld Heat Treatment Cracking


17 Transformation-Hardening Materials: Carbon and Alloy Steels

17.1 Phase Diagram and CCT Diagrams

17.2 Carbon Steels

17.3 Low-Alloy Steels

17.4 Hydrogen Cracking

17.5 Reheat Cracking

17.6 Lamellar Tearing

17.7 Case Studies


18 Corrosion-Resistant Materials: Stainless Steels

18.1 Classification of Stainless Steels

18.2 Austenitic Stainless Steels

18.3 Ferritic Stainless Steels

18.4 Martensitic Stainless Steels

18.5 Case Study: Failure of a Pipe



Further Reading