: Thomas Böllinghaus, Horst Herold, Carl E. Cross, John C. Lippold
: Thomas Boellinghaus, Horst Herold, Carl E. Cross, J C Lippold
: Hot Cracking Phenomena in Welds II
: Springer-Verlag
: 9783540786283
: 1
: CHF 133.60
:
: Maschinenbau, Fertigungstechnik
: English
: 467
: Wasserzeichen/DRM
: PC/MAC/eReader/Tablet
: PDF
Failure of welded components can occur during service as well as during fabrication. Most common, analyses of the resistance of welded components against failure are targeted at crack avoidance. Such evaluations are increasingly carried out by modern weldability studies, i. e. considering interactions between the selected base and filler materials, structural design and welding process. Such weldability investigations are particularly targeted to prevent hot cracking, as one of the most common cracking phenomena occurring during weld fabrication. To provide an international information and discussion platform to combat hot cracking, an international workshop on Hot Cracking Phenomena in Welds has been created, based on an initiative of the Institute for Materials and Joining Technology at the Otto-von-Guericke University in Magdeburg and the Division V. 5 - Safety of Joined Components at the Federal Institute for Materials Research and Testing (BAM) in Berlin, Germany. The first workshop was organized in Berlin under the topics mechanisms and phenomena, metallurgy and materials, modelling and simulations as well as testing and standardization. It consisted of 20 individual contributions from eight countries, which were compiled in a book that found a very ready market, not only in the welding community. As a consequence of increasing interest, it has been decided to establish the Workshop on Hot Cracking Phenomena in Welds as a regular event every three years embedded in the International Institute of Welding (IIW). Attached to the IIW Commission IX and II Spring intermediate meetings, the second workshop was organized in March 2007.
Preface5
Contents7
Part I Solidification Cracking Theory11
In Search of the Prediction of Hot Cracking in Aluminium Alloys12
Application of the Rappaz-Drezet-Gremaud Hot Tearing Criterion to Welding of Aluminium Alloys28
Weld Solidification Cracking: Critical Conditions for Crack Initiation and Growth48
Consideration of the Welding Process as a Thermo-Physical Mechanism to Control Cracking in Weldments68
Determination of Critical Strain Rate for Solidification Cracking by Numerical Simulation86
Part II Solidification Cracking of Ferrous and Nickel-Base Alloys103
Classification and Mechanisms of Cracking in Welding High-Alloy Steels and Nickel Alloys in Brittle Temperature Ranges104
Submerged Arc Welding – A Test for Centreline Cracking124
Influence of Local Weld Deformation on the Solidification Cracking Susceptibility of a Fully Austenitic Stainless Steel136
Weld Solidification Cracking in Solid-Solution Strengthened Ni-Base Filler Metals156
Hot Cracking Susceptibility of Ni-Base Alloy Dissimilar Metal Welds180
Evaluation of Weld Solidification Cracking in Ni-Base Superalloys Using the Cast Pin Tear Test202
SAW Cold Wire Technology – Economic Alternative for Joining Hot Crack Sensitive Nickel-Base Alloys224
Part III Solidification Cracking of Aluminium Alloys248
Hot Tearing During Laser Butt Welding of 6xxx Aluminium Alloys: Process Optimisation and 2D/3D Characterisation of Hot Tears250
The Integral Approach – a Tailored Method to Optimize Structural Behavior and Weldability 266
Weld Parameter and Minor Element Effects on Solidification Crack Initiation in Aluminium286
Using Simulation for Investigations of Hot Cracking Phenomena in Resistance Spot Welding of 6xxx Aluminum Alloys (AA6016 and AA6181)320
Part IV Liquation Cracking336
Evaluating Hot Cracking Susceptibility of Ni-Base SAW Consumables for Welding of 9% Ni Steel338
Assessment of HAZ Hot Cracking in a High Nitrogen Stainless Steel358
Crack Appearance in Hot Rolled Billets380
Part V Ductility-Dip Cracking397
Effect of Filler Metal La Additions on Micro-Cracking in Multi-Pass Laser Overlay Weld Metal of Alloy 690398
Ductility-Dip Cracking in High Chromium, Ni-Base Filler Metals418
Thermodynamic and Kinetic Approach to Ductility-Dip Cracking Resistance Improvement of Ni-base Alloy ERNiCrFe-7: Effect of Ti and Nb Additions436
Index464