Skip to main content
SpringerLink
Log in
Book cover

Essential Readings in Magnesium Technology pp 217–222Cite as

The Role of Microstructure and Porosity in Ductility of Die Cast AM50 and AM60 Magnesium Alloys

  • Chapter

  • 5070 Accesses

Abstract

The deformation and fracture behavior of die-cast AM50 and AM60 magnesium alloys have been examined to determine the processes leading to fracture in bending and tension and to elucidate the influences of microstructure and porosity on ductility. Damage accumulation in terms of crack initiation, growth, linking and eventual failure was quantified as a function of strain for as-cast plates with section thicknesses of 2, 6 and 10 mm. Microstructure and porosity distribution are dependent on section thickness, with bands of high porosity resulting from the nature of the die filling process. In both tensile and three-point bend studies, damage accumulation and subsequent ductility at fracture are strongly influenced by the heterogeneous porosity distribution, with early crack formation occurring in regions of highest porosity. A model is presented that relates the observed ductility of these alloys with porosity distribution, crack size, crack tip radius, and elastic modulus.

This is a preview of subscription content, log in via an institution.

Chapter
USD   29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD   189.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book
USD   169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Learn about institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Reference

  1. D. J. Sakkinen, “Physical Metallurgy of Magnesium Die Cast Alloys”, SAE Technical Paper, 940779, SAE, Detroit, MI, (1994).

    Google Scholar 

  2. B.L. Mordike and T. Ebert, “Magnesium: Properties-applications-potential”, Materials Science and Engineering, A302 (2001), 37–45.

    Google Scholar 

  3. H. Mao et.al., “Microstructural Characteristics of Die Cast AZ91D and AM60 Magnesium Alloys”, SAE Technical Paper, 1999-01-0928, SAE, Detroit, MI, (1999).

    Google Scholar 

  4. T.Kr. Aune et.al., “Properties of Die Cast Magnesium Alloys of varying Aluminum Content”, SAE Technical Paper, 900792, SAE, Detroit, MI, (1990).

    Google Scholar 

  5. C.D. Lee, “Effect of Microporosity on Tensile Properties of As-Cast AZ91D Magnesium Alloy”, Metals and Materials International, 8(3) (2002), 283–288.

    Article  Google Scholar 

  6. A.L. Bowles et.al., “Ductility and the Skin Effect in High Pressure Die Cast Mg-Al Alloy”, Magnesium Technology 2001, ed. J. Hryn (New Orleans, LA: The Minerals, Metals and Materials Society TMS, 2001), 161–168.

    Google Scholar 

  7. Z. Liu et.al., “The Influence of Porosity of Magnesium Die Casting Alloys on its Mechanical Properties”, Metall, (54) (2000), 122–125.

    Google Scholar 

  8. T. Abott, M. Easton, and W. Song, “Mechanical Behavior of Cast Magnesium Alloys”, Materials Science Forum, 419–422 (2003), 141–146.

    Article  Google Scholar 

  9. A. Stich, “Dimensions Strategy for High Stress Cast Magnesium Components”, Magnesium 2000, ed. E. Aghion and D. Eliezer (Dead Sea, Israel: Proceedings of the Second Israeli International Conference on Magnesium Science and Technology, 2000), 27–34.

    Google Scholar 

  10. D. Rodrigo et.al., “Effects of Section Size and Microstructural Features on the Mechanical Properties of Die Cast AZ91D and AM60B Magnesium Alloy Test Bars”, SAE Technical Paper, 1999-01-0927, SAE, Detroit, MI, (1999).

    Google Scholar 

  11. G. Schindelbacher and R. Rosch, “Mechanical Properties of Magnesium Die Casting Alloys at Elevated Temperatures and Microstructures in Dependence of Wall Thickness”, Werkstoff-Informationsgesellschaft, ed. B.L. Mordike and K.U. Kainer (Wolfsburg, Germany; Magnesium Alloys and their Applications, 1998), 247–252.

    Google Scholar 

  12. S. Sannes et.al., “Die Casting of Magnesium Alloys- The Importance of Controlling Die Filling and Solidification”, SAE Technical Paper, 2003-01-0183, SAE, Detroit, MI, 2003.

    Google Scholar 

  13. A.K. Dahle et.al., “Formation of Defect Bands in High Pressure Die Cast Magnesium Alloys”, Journal of Light Metals, 1 (2001), 99–103.

    Article  Google Scholar 

  14. P.D.D. Rodrigo and V. Ahuja, “Effect of Casting Parameters on the Formation of Pore/Segregation Bands in Magnesium Die Castings”, Magnesium 2000, ed. E. Aghion and D. Eliezer (Dead Sea, Israel: Proceedings of the Second Israeli International Conference on Magnesium Science and Technology, 2000), 97–104.

    Google Scholar 

  15. B.J. Coultes et.al., “Mechanical Properties and Microstructure of Magnesium High Pressure Die Castings”, Magnesium Technology 2003, ed. H.I. Kaplan (San Diego, CA: The Minerals, Metals and Materials Society TMS, 2003),45–50.

    Google Scholar 

  16. J.Y. Jung, “Prediction of tensile ductility in porous solids”, Philosophical Magazine A, 82(11) (2002), 2263–2268.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Materials Science and Engineering, University of Michigan, 2300 Hayward St., Ann Arbor, MI, 48105, USA

    Gurjeev Chadha & J. Wayne Jones

  2. Materials Research Laboratory, Ford Motor Company, 20000 Rotunda Drive, Dearborn, MI, 48124, USA

    John E. Allison

Authors
  1. Gurjeev Chadha
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. John E. Allison
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. Wayne Jones
    View author publications

    You can also search for this author in PubMed Google Scholar

Editor information

Editors and Affiliations

  1. Materials Science Division, U.S. Army Research Office (ARO), USA

    Suveen N. Mathaudhu B.S.E., Ph.D. (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor) (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor)

  2. Department of Materials Science and Engineering, North Carolina State University, USA

    Suveen N. Mathaudhu B.S.E., Ph.D. (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor) (Program Manager for Synthesis and Processing of Materials, Adjunct Assistant Professor)

  3. The Ohio State University (OSU), Columbus, Ohio, USA

    Alan A. Luo (Professor of Materials Science and Engineering and Professor of Integrated Systems Engineering, Vice Chair of TMS Light Metals Division and SAE Materials Division and the Chair of SAE Non-Ferrous Metals Committee) (Professor of Materials Science and Engineering and Professor of Integrated Systems Engineering, Vice Chair of TMS Light Metals Division and SAE Materials Division and the Chair of SAE Non-Ferrous Metals Committee)

  4. IND LLC, Canada

    Neale R. Neelameggham (Guru) (Guru)

  5. Pacific Northwest National Laboratory (PNNL), Washington, USA

    Eric A. Nyberg B.S., M.S. (Chief Engineer) (Chief Engineer)

  6. New Materials & Energy Unit at the research and technology center, European Space Agency (ESA-ESTEC), Netherlands

    Wim H. Sillekens Ph.D. (project manager) (project manager)

Rights and permissions

Reprints and permissions

Copyright information

© 2016 The Minerals, Metals & Materials Society

About this chapter

Cite this chapter

Chadha, G., Allison, J.E., Jones, J.W. (2016). The Role of Microstructure and Porosity in Ductility of Die Cast AM50 and AM60 Magnesium Alloys. In: Mathaudhu, S.N., Luo, A.A., Neelameggham, N.R., Nyberg, E.A., Sillekens, W.H. (eds) Essential Readings in Magnesium Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-48099-2_36

Download citation

Publish with us

Policies and ethics

Search

Navigation