Thermodynamic characterization of solidification and defects that occur in Mg-alloy AM60

  • Maja Vončina University of Ljubljana Faculty of natural sciences and engineering Department for materials and metallurgy

Abstract


The AM60 alloy was thermodynamically examined using chemical analysis, thermodynamic calculation made by ThermoCalc program, “in situ” thermal analysis and differential scanning calorimetry (DSC), whereas the microstructure constituents were confirmed using optical and scanning electron microscopy (SEM).

The equilibrium solubility of Al in Mg at the eutectic temperature 437 °C is 12.6 wt. % Al. According to the solvus line of the Mg-Al phase diagram the intermetallic compound of Al12Mg17 is precipitating on the boundaries of the primary Mg grains after the completed solidification. Solidification of the AM60 alloy has been investigated using “in situ” simple thermal analysis. The investigation of solidification has been taking place by evaluation of the cooling curves in connection with metallographic examinations, differential scanning calorimetry and thermodynamic calculations. All defects, nonmetallic inclusions and intermetallic compounds that occur in investigated AM60 alloy were identified.

References

Kainer, K. U.: Magnesium Alloys and Technology. Weinheim: WILLEY – VCH, 2003, p. 254-272.

Dorsam, Horst A.: Magnesium melting/casting and remelting in foundries. EFM Magnesium Seminar. Aalen, 2000

Bartłomiej Dybowski and Andrzej Kielbus, Non-Metallic Inclusions in Mg-RE-Zr Casting Alloys, Materials Science Forum Vol. 782 (2014) pp 398-403

K. Vanna Yang, M.A. Easton, C.H. Caceres, The development of the skin in HPDC Mg-Al alloys, Mater. Sci. Eng. A, 580 (2013), pp. 191–195

S.G. Lee, A.M. Gokhale, Formation of gas induced shrinkage porosity in Mg-alloy high-pressure die-castings, Scr. Mater., 55 (4) (2006), pp. 387–390

J. López, F. Faura, J. Hernández, P. Gómez, On the critical plunger speed and three-dimensional effects in high-pressure die casting injection chambers, J. Manuf. Sci. Eng., 125 (3) (2003), p. 529

Zhuofei Yang, Alexandre Maurey, Jidong Kang, David S. Wilkinson, Materials Characterization,Volume 114, April 2016, Pages 254–262

W. Wang, G.H. Wu, Q.D. Wang, Y.G. Huang, M. Sun, W.J. Ding, Trans. Nonferrous Met. Soc. China, 18 (S1) (2008), pp. s292–s298

G.H. Wu, W. Wang, M. Sun, Q.D. Wang, W.J. Ding, Trans. Nonferrous Met. Soc. China, 20 (2010), pp. 1177–1183

W. Jie, J.X. Zhou, W.H. Tong, Y.S. Yang, Trans. Nonferrous Met. Soc. China, 20 (2010), pp. 1235–1239

O. Lunder, T.K. Aune, K. Nisancioglu, Corros. Sci, 43 (1987), pp. 291–295

Mrvar, P., Medved, J., Trbižan, M., Papež, A., Ramovš, J.: Nekovinski vključki in intermetalne spojine v zlitini AM60, Zbornik referatov na 44. livarskem posvetovanju v Portorožu 2004

Mrvar, P., Medved, J., Trbižan, M., Papež, A., Ramovš, J.: Nonmetallic inclusions and intermetalic compounds in alloy AM60. Livar. vestn., 2005, 52, No. 4, p. 146-159

Published
2017/03/08
How to Cite
Vončina, M. (2017). Thermodynamic characterization of solidification and defects that occur in Mg-alloy AM60. Journal of Mining and Metallurgy, Section B: Metallurgy, 53(2), 107-114. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/11101
Issue
Vol. 53 No. 2 (2017)
Section
Original Scientific Paper

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