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Journal of Materials Science

, Volume 44, Issue 12, pp 3049–3056 | Cite as

Effects of samarium on microstructure and mechanical properties of Mg–Y–Sm–Zr alloys during thermo-mechanical treatments

  • Daquan LiEmail author
  • Qudong Wang
  • Wenjiang Ding
Article

Abstract

Microstructure and mechanical properties of Mg–4Y–xSm–0.5Zr (x = 1, 4, 8) alloys during thermo-mechanical treatments were investigated in this study. Mg–4Y–4Sm–0.5Zr alloy exhibits higher tensile strength but lower elongation than Mg–4Y–1Sm–0.5Zr alloy during the thermo-mechanical treatments. Large amount of intermetallic phases still remained at grain boundaries in Mg–4Y–8Sm–0.5Zr alloy after solution. These undissolved phases can strengthen the grain boundaries at temperatures higher than 573 K. But the room temperature mechanical properties of Mg–4Y–8Sm–0.5Zr alloy during the thermo-mechanical treatments were greatly weakened for the brittleness of these undissolved intermetallic phases.

Keywords

Yield Strength Ultimate Tensile Strength Samarium Extrusion Process Eutectic Phasis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was supported by International Cooperation Fond of Shanghai Science and Technology Committee, Shanghai/Rhone-Alpes Science and Technology cooperation fund (No. 06SR07104).

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.National Engineering Research Center for Nonferrous Metals CompositionsGeneral Research Institute for Nonferrous Metals (GRINM)BeijingPeople’s Republic of China
  2. 2.National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and EngineeringShanghai Jiaotong UniversityShanghaiPeople’s Republic of China

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