High temperature deformation mechanisms and processing map for hot working of cast-homogenized Mg-3Sn-2Ca alloy

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschungbegutachtet

Authors

  • K. P. Rao
  • Y. V.R.K. Prasad
  • N. Hort
  • K. U. Kainer

The hot working behavior of Mg-3Sn-2Ca alloy has been investigated in the temperature range 300-500 °C and strain rate range 0.0003-10 s-1, with a view to evaluate the mechanisms and optimum parameters of hot working. For this purpose, a processing map has been developed on the basis of the flow stress data obtained from compression tests. The stress-strain curves exhibited steady state behavior at strain rates lower than 0.01 s-1 and at temperatures higher than 350 °C and flow softening occurred at higher strain rates. The processing map exhibited two dynamic recrystallization domains in the temperature and strain rate ranges: (1) 300-420 °C and 0.0003-0.003 s-1, and (2) 420-500 °C and 0.003-1.0 s-1, the latter one being useful for commercial hot working. Kinetic analysis yielded apparent activation energy values of 161 and 175 kJ/mole in domains (1) and (2) respectively. These values are higher than that for self-diffusion in magnesium suggesting that the large volume fraction of intermetallic particles CaMgSn present in the matrix generates considerable back stress. The processing map reveals a wide regime of flow instability which gets reduced with increase in temperature or decrease in strain rate.

OriginalspracheEnglisch
TitelTHERMEC 2009
HerausgeberTara Chandra, N. Wanderka, Walter Reimers, M. Ionescu
Anzahl der Seiten6
VerlagTrans Tech Publications Ltd
Erscheinungsdatum2010
Seiten3616-3621
ISBN (Print)0878492941, 9780878492947
DOIs
PublikationsstatusErschienen - 2010
Extern publiziertJa
Veranstaltung6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 - Berlin, Deutschland
Dauer: 25.08.200929.08.2009
Konferenznummer: 6

Zuletzt angesehen

Publikationen

  1. Introduction
  2. Criticality and Values in Digital Transformation Research: Insights from a Workshop
  3. Endemic predators, invasive prey and native diversity
  4. Impacts of offshore wind farms on sediment structure and the water column during construction, and changes in bottom topography during the operation phase
  5. Techno-economic assessment of non-sterile batch and continuous production of lactic acid from food waste
  6. To Row Together or Paddle One's Own Canoe? Simulating Strategies to Spur Digital Platform Growth
  7. Influence of One Hour versus Two Hours of Daily Static Stretching for Six Weeks Using a Calf-Muscle-Stretching Orthosis on Maximal Strength
  8. Technical Note—The Joint Impact of F-Divergences and Reference Models on the Contents of Uncertainty Sets
  9. Risky Business
  10. Investigation of the deformation behavior of Fe-3%Si sheet metal with large grains via crystal plasticity and finite-element modeling
  11. Social identity and place-based dynamics in community resilience building for natural disasters
  12. Inner transformation to sustainability as a deep leverage point
  13. Rational Design of Molecules by Life Cycle Engineering
  14. Maize rhizosphere priming: field estimates using 13C natural abundance
  15. C.S.ルイス 「ライオンと魔女」の謎を解く―ナルニアガイド
  16. C.S.ルイス 「ライオンと魔女」の謎を解く―ナルニアガイド
  17. Convergence or mediation? Experts of vulnerability and the vulnerability of experts' discourses on nanotechnologies
  18. Multiscale material modeling
  19. Digitalization
  20. Experimental and numerical analysis of material flow in porthole die extrusion
  21. Organizing Half-Things: Knowing, Theorizing and Studying Atmospheres
  22. The shadow of the family
  23. Qualitative and Quantitative Human Error Analysis in Hazardous Industries
  24. The hidden hand that shapes conceptual understanding: Choosing effective representations for teaching cell division and climate change
  25. Histological Comparison of New Biodegradable Magnesium-Based Implants for Maxillofacial Applications
  26. The first observation of honeydew foraging in army ants since 1933
  27. Decline of an endangered amphibian during an extreme climatic event
  28. Proving the world more imaginary?
  29. The effect of complacency potential on human operators’ monitoring behavior in aviation