Eigenspannungsabbau in zügig und zyklisch beanspruchten Schweißverbindungen
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Th. Nitschke-Pagel
Abstract
An Schweißsimulationsproben eines vergüteten Feinkornbaustahls S960QL wurde der Abbau von Eigenspannungen unter zügiger und kombiniert zügiger und zyklischer Belastung bei unterschiedlichen Beanspruchungshöhen untersucht. Die Untersuchungsergebnisse zeigen einen vorwiegend durch Streckgrenzenüberschreitung gekennzeichneten quasistatischen Abbau der Makroeigenspannungen, der sich weitgehend proportional zur Beanspruchungshöhe bzw. zur Oberspannung verhält. Signifikante Veränderungen der Mikroeigenspannungen treten dabei nur auf, wenn die Lastspannungen die Streckgrenze überschreiten. Ein Nachweis eines zyklischen Eigenspannungsabbau ist nur unter Rückgriff auf die aus den verschiedenen Eigenspan-nungskomponenten und den Lastspannungen berechneten Vergleichsspannungen möglich.
Abstract
Investigations on welded joints of a high strength structural steel were carried out to observe the relaxation of residual stresses and microstructural changes under quasistatic loading as well as during fatigue loading. The results of residual stress measurements after several load cycles reveal that tensile residual stresses with high initial magnitudes are reduced in first order due to quasistatic yielding during the first load cycle. Then the relaxation of the residual stresses increases linearily with the load stress. Under cyclic loading the relaxation of the residual stresses depends on the magnitude of the upper stress. An additional cyclic yielding leads to equivalent stresses calculated with the load stress and the two-dimensional residual stresses after higher number of load cycles, which are uniformly close to the cyclic yield strength of the base material.
References
1 Gurney, T.R.: Fatigue of Welded Structures, University Press, Cambridge (1979)Search in Google Scholar
2 Vöhringer, O., in: A. Niku-Lari (ed.), Advances in Surface Treatments, Pergamon Press (1987) 367.Search in Google Scholar
3 Wohlfahrt, H., in: V. Hauk (ed.), Eigenspannungen: Entstehung – Messung – Bewertung, Band 2, DGM Informationsgesellschaft, Oberursel (1983) 85.Search in Google Scholar
4 Hirsch, T.: Dissertation, TH Karlsruhe (1983).Search in Google Scholar
5 Vöhringer, O., in: V. Hauk (ed.), Eigenspannungen: Entstehung – Messung – Bewertung, Band 1, DGM Informationsgesellschaft, Oberursel (1983) 49.Search in Google Scholar
6 Burgahn, F.: Dissertation, TH Karlsruhe (1994).Search in Google Scholar
7 Bergström, J. et al., in: H. Wohlfahrt (ed.), Shot Peening, Proc. 3rd Int. Conf. on Shot Peening, DGM-Informationsgesellschaft, Oberursel (1987) 221Search in Google Scholar
8 Lu, J.; Flavenot, J.F., in: G. Beck, S. Denis, A. Simon (eds.), Proc. 2nd Int. Conf. on Residual Stress, Elsevier, London (1989) 784.10.1007/978-94-009-1143-7_131Search in Google Scholar
9 Bäumel, A: Dissertation, TH Darmstadt (1991).Search in Google Scholar
10 James, M.R.; Morris, W.L.: Scripta Metall. 17(1983) 1101.10.1016/0036-9748(83)90462-3Search in Google Scholar
11 Nitschke, Th.: Dissertation, TU Braunschweig (1994).Search in Google Scholar
12 Schulze, V.: Dissertation, TH Karlsruhe (1993).Search in Google Scholar
13 Wick, A.: Dissertation, TH Karlsruhe (1999).Search in Google Scholar
14 Macherauch, E.; Wohlfahrt, H., in: D. Munz (ed.), Ermüdungsverhalten metallischer Werkstoffe, DGM Informationsgesellschaft, Oberursel (1985) 237.Search in Google Scholar
© 2001 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Editorial
- Günter Lange 65 Years
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- Deformation and Microstructure of Titanium Chips and Workpiece
- Eigenspannungsabbau in zügig und zyklisch beanspruchten Schweißverbindungen
- Bruchmechanische Nachweise zur Stahlgütewahl für moderne Feinkornbaustähle
- Experimental Analysis of the Interaction of “Hot” and “Cold” Volume Elements during Thermal Fatigue of a Cooled Component Made from AISI 3161 Steel
- Microstructure and Cyclic Deformation Behavior of Wheel and Tire Steels in Technically Relevant Heat Treatments
- Dehnratenabhängige Beschreibung der Fließkurven für erhoöhte Temperaturen
- Ein einfaches Modell für die Kinetik der Rekristallisation
- Determination of the Elastic Modulus of Wear Resistant Coatings by Quantitative Acoustic Microscopy
- Processing, Microstructure and Properties of Nb–TiO2 ODS Materials for Surgical Implants
- Influence of Surface Treatment on the Pitting Corrosion Behaviour of High Alloyed Stainless Steels in a Chloride Solution
- Unfall durch Drahtseilriss in einer Tunnelbaustelle
- Synthesis of Nanocrystalline B2 Structured (Ru, Ir) Al in the Ternary Ru–Al–Ir System by Mechanical Alloying and its Thermal Stability
- Preparation of Ca-α-sialon Ceramics with Compositions along the Si3N4-1/2 Ca3N2:3AIN Line
- SiC–Si3N4 Nanocomposite Prepared by the Addition of SiO2 + C
- Ceramics in the Si3N4–ZrO2–CeO2 System: Phase Composition Changes and Properties
- The Al–Ca System, Part 1: Experimental Investigation of Phase Equilibria and Crystal Structures
- The Al–Ca System, Part 2: Calorimetrie Measurements and Thermodynamic Assessment
- Phase Relationships of the Gd-Zn System
- Ableitung des Kristallisationspfades in ternären Gusslegierungen
- Bildanalyse komplexer Werkstoffgefüge durch Texturanalyse und Korrelation mit den Eigenschaften durch neuronale Netze
- Grain Growth in the Nanocrystalline W–Cu and Cu–Pb Composite Powders Prepared by Mechanical Alloying
- Toughening and Strengthening Response in Ni3Al-Bonded Titanium Carbide Cermets
- Creep Behavior of γ-TiAl-Based Alloys with Fully Lamellar Microstore
- Elevated Temperature Deformation of P/M Dispersion - Strengthened Copper and Aluminium
- Evolution of the Microstructure during Hot Working of Gamma-Based TiAl Alloys
- Interface Motion of β-Silicon Nitride in a Liquid Phase
- Internal Friction and Creep of Titanium Aluminides with Different Microstructure
- Mitteilungen/Notifications
- Personen
- Conferences
Articles in the same Issue
- Frontmatter
- Editorial
- Günter Lange 65 Years
- Aufsätze/Articles
- Deformation and Microstructure of Titanium Chips and Workpiece
- Eigenspannungsabbau in zügig und zyklisch beanspruchten Schweißverbindungen
- Bruchmechanische Nachweise zur Stahlgütewahl für moderne Feinkornbaustähle
- Experimental Analysis of the Interaction of “Hot” and “Cold” Volume Elements during Thermal Fatigue of a Cooled Component Made from AISI 3161 Steel
- Microstructure and Cyclic Deformation Behavior of Wheel and Tire Steels in Technically Relevant Heat Treatments
- Dehnratenabhängige Beschreibung der Fließkurven für erhoöhte Temperaturen
- Ein einfaches Modell für die Kinetik der Rekristallisation
- Determination of the Elastic Modulus of Wear Resistant Coatings by Quantitative Acoustic Microscopy
- Processing, Microstructure and Properties of Nb–TiO2 ODS Materials for Surgical Implants
- Influence of Surface Treatment on the Pitting Corrosion Behaviour of High Alloyed Stainless Steels in a Chloride Solution
- Unfall durch Drahtseilriss in einer Tunnelbaustelle
- Synthesis of Nanocrystalline B2 Structured (Ru, Ir) Al in the Ternary Ru–Al–Ir System by Mechanical Alloying and its Thermal Stability
- Preparation of Ca-α-sialon Ceramics with Compositions along the Si3N4-1/2 Ca3N2:3AIN Line
- SiC–Si3N4 Nanocomposite Prepared by the Addition of SiO2 + C
- Ceramics in the Si3N4–ZrO2–CeO2 System: Phase Composition Changes and Properties
- The Al–Ca System, Part 1: Experimental Investigation of Phase Equilibria and Crystal Structures
- The Al–Ca System, Part 2: Calorimetrie Measurements and Thermodynamic Assessment
- Phase Relationships of the Gd-Zn System
- Ableitung des Kristallisationspfades in ternären Gusslegierungen
- Bildanalyse komplexer Werkstoffgefüge durch Texturanalyse und Korrelation mit den Eigenschaften durch neuronale Netze
- Grain Growth in the Nanocrystalline W–Cu and Cu–Pb Composite Powders Prepared by Mechanical Alloying
- Toughening and Strengthening Response in Ni3Al-Bonded Titanium Carbide Cermets
- Creep Behavior of γ-TiAl-Based Alloys with Fully Lamellar Microstore
- Elevated Temperature Deformation of P/M Dispersion - Strengthened Copper and Aluminium
- Evolution of the Microstructure during Hot Working of Gamma-Based TiAl Alloys
- Interface Motion of β-Silicon Nitride in a Liquid Phase
- Internal Friction and Creep of Titanium Aluminides with Different Microstructure
- Mitteilungen/Notifications
- Personen
- Conferences
