Investigation of minimum creep rates and stress exponents calculated from tensile and compressive creep data of magnesium alloy AE42

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

Creep specimens prepared of magnesium alloy AE42 were investigated under constant load in compressive and in tensile creep. Material was cast via the squeeze casting process in order to obtain a dense microstructure without pores. Creep tests were performed at constant temperatures between 150 °C and 240 °C and constant applied stresses between 40 MPa and 120 MPa until a minimum creep rate was reached. It could be seen that the minimum creep rates in compressive creep tests were smaller than in tensile creep tests, and the difference increased with increasing applied stress. Stress exponents were determined according to the Norton equation and it was found that a threshold stress had to be introduced into the analysis. The threshold stress is based on strengthening by aluminum-rare earths precipitates. Calculating the true stress exponent, deformation mechanisms during creep could be clarified.

OriginalspracheEnglisch
ZeitschriftMaterials Science and Engineering A
Jahrgang510-511
AusgabenummerC
Seiten (von - bis)382-386
Anzahl der Seiten5
ISSN0921-5093
DOIs
PublikationsstatusErschienen - 15.06.2009
Extern publiziertJa

DOI

Zuletzt angesehen

Publikationen

  1. Instruments for comprehensive land use planning and river basin management
  2. Swarm Robotics, or: The Smartness of 'a bunch of cheap dumb things'
  3. Effectiveness and Moderators of an Internet-Based Mobile-Supported Stress Management Intervention as a Universal Prevention Approach
  4. Vorräte - Schätzung des Fertigstellungsgrades bei der Percentage of Completion Methode
  5. Does problem complexity matter for environmental policy delivery?
  6. The Use of Media in Intercultural Dialogue "dialogo_dialog"!
  7. UE4SD - University Educators for Sustainable Development
  8. Crown size-growth relationships of European beech (Fagus sylvatica L.) are driven by the interplay of disturbance intensity and inter-specific competition
  9. Voluntary carbon offsetting schemes for aviation
  10. Battery as a mediating technology of organization
  11. Fines for Absuse of Dominance in "High tech" Markets
  12. Connected process design for hot working of a creep-resistant Mg–4Al–2Ba–2Ca alloy (ABaX422)
  13. α- and β-diversity in moth communities in salt marshes is driven by grazing management
  14. All Along the Data Watch Tower.
  15. Life satisfaction and the consumption values of partners and friends: Empirical evidence from German panel survey data
  16. Unveiling the Bounty
  17. Valuing changes in ecosystem services: scenario analysis
  18. How perfect is (too) perfect? Illuminating why the perfectionism-performance-relationship is (non-)linear
  19. Quantification of sources of PCBs to the atmosphere in urban areas
  20. Politische Strategie
  21. Durch Benchmarking lernen
  22. Effective working hours and wages
  23. Pastorale Agonalität
  24. A company's capacity and related matters
  25. Understanding the bright side and the dark side of telework
  26. Differential predictors of post-retirement life and work satisfaction
  27. The Interplay Between Supply Chain Transparency and NGO Pressure
  28. Vier Variationen
  29. Aktienanleihen
  30. Doppelstrategie für die Schweiz
  31. Temporal variations of perfluoroalkyl substances and polybrominated diphenyl ethers in alpine snow
  32. Evaluating the success of public participation in water resources management: five key constituents
  33. Reversible hydrogen storage in Ti–Zr-codoped NaAlH4 under realistic operation conditions: Part 2