Weldability of Ferritic Steels

by Bailey

• ISBN13: 9781855730922
• ISBN10: 1855730928
• Format: Hardcover
• Copyright: 1994-05-31
• Publisher: Elsevier Science

Summary

This book is chiefly concerned with the conventional fusion welding processes and their problems and will be of value to practical welding engineers, inspectors and metallurgists. The author also has in mind the needs of those concerned with design and specification, recognizing the importance of dealing with problems at the design stage.

Table of Contents

Introduction
Acknowledgements
Factors influencing weldability	p. 1
The welding process	p. 1
Steel types	p. 3
Weld cooling cycle	p. 9
The heat-affected zone	p. 14
The weld metal	p. 18
Cutting and gouging	p. 28
Residual stresses	p. 29
Post-weld heat treatment	p. 32
Weldability formulae	p. 35
Potential welding problem areas	p. 45
Cracking	p. 45
Welding faults	p. 45
Inspection for defects	p. 46
Joint integrity	p. 46
Problems associated with PWHT	p. 46
Service problems	p. 47
Repair	p. 47
Joining dissimilar steels	p. 47
Joining dissimilar metals	p. 50
Solidification cracking	p. 54
Role of composition	p. 66
Solidification cracking and the welding process	p. 74
Control and avoidance of cracking	p. 80
Liquation cracking	p. 86
Copper pick-up	p. 91
Ductility dip cracking	p. 93
Detection and identification	p. 93
Lamellar tearing	p. 102
Role of inclusions	p. 104
Susceptible joint types	p. 109
Other factors	p. 115
Control and avoidance of cracking	p. 118
Control tests	p. 119
Detection and identification	p. 128
Hydrogen cracking	p. 133
Hydrogen	p. 134
Susceptibility to embrittlement	p. 140
Stress to give cracking	p. 144
Temperature of embrittlement	p. 145
Techniques for avoiding cracking	p. 146
Weld metal hydrogen cracking	p. 155
Detection and identification	p. 159
Other aspects of hydrogen in ferritic steels	p. 162
Reheat cracking	p. 170
Role of composition	p. 172
Other influences	p. 173
Control techniques	p. 174
Detection and identification	p. 178
Faults of welding	p. 180
Faults of shape	p. 180
Inclusions	p. 183
Cavities	p. 185
Inspection for defects	p. 187
Inspection techniques	p. 188
Inspectability	p. 188
Consequences of metallurgical features	p. 189
Joint integrity	p. 191
Strength and ductility	p. 191
Toughness	p. 193
Hardness	p. 204
Creep resistance	p. 204
Corrosion resistance	p. 205
Service problems	p. 210
Fatigue and corrosion fatigue	p. 210
Corrosion	p. 211
Stress corrosion	p. 211
Loss of toughness in service	p. 212
High temperature service problems	p. 218
Graphitisation	p. 220
Repair	p. 224
Analysis prior to repair	p. 224
Limitation of preheat	p. 228
Need for post-weld heat treatment	p. 228
Special circumstances	p. 230
Further reading	p. 236
Glossary	p. 238
Index	p. 271
Table of Contents provided by Blackwell. All Rights Reserved.