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The effect of exposure to elevated temperatures on the microstructure and hardness of Mg–Ca–Zn alloy

  • Amir Finkel , Ludmila Shepeleva , Menachem Bamberger EMAIL logo and Eugen Rabkin
Published/Copyright: January 7, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 97 Issue 1

Abstract

The die cast Mg-5 wt.% Ca-6 wt.% Zn ternary alloy was exposed to 160 °C for different times of up to 40 days. Microstructural analysis and microhardness and hardness measurements of the samples after different exposure times enabled the thermal stability of the cast alloy to be monitored. The as-cast structure is composed mainly of α-Mg solid solution, elliptical grain boundary particles of CaMg2, and an intergranular eutectics of Mg and Ca2Mg6Zn3. The grain size of α-Mg and the structure of the alloy did not change during the treatment, but the amount of the intergranular phases increased slightly. Exposure to 160 °C resulted in a decrease in micro-hardness of the α-Mg grains, but no change in the overall hardness of the samples was observed. Microstructural analyses indicated diffusion of the solute elements from the α-Mg grains to the grain boundaries, resulting in a decrease in hardness of the α-Mg which is, however, compensated by an increase in hardness related to intergranular precipitates. Using a simple diffusion model, the diffusion coefficient of Ca atoms in Mg at 160 °C was estimated to be 2.1 · 10 –17 m2 s– 1, which is greater than that of Zn by two orders of magnitude.

Keywords: Mg alloys; Microstructure; Microstructural stability; Diffusion
Prof. Menachem Bamberger Dept. of Mat. Engineering Technion – Israel Institute of Technology, 32000 Haifa, Israel Tel.: +972 4 829 4587 Fax: +972 4 829 5677

References

[1] A. Finkel, M. Regev, E. Aghion, M. Bamberger, A. Rosen, in: Proc. of the First Israeli Int. Conf. on Mg Sci. and Tech., E. Aghion and D. Eliezer (Eds.), Mg Research Inst., Dead Sea, Israel (1997) 121.Search in Google Scholar

[2] M. Bamberger: Mater. Sci. Tech. 17 (2001) 15.10.1179/026708301101509061Search in Google Scholar

[3] T. Miyazaki, J. Kaneco, M. Sugamata: Mater. Sci. Eng. A 181 (1994) 1410.10.1016/0921-5093(94)90874-5Search in Google Scholar

[4] Y.C. Lee, A.K. Dahle, D.H. StJohn, in: Mg Tech. 2000, H.I. Kaplan, J. Hryn, B. Clow (Eds.), TMS, Nashville, Tennessee (2000) 211.10.1002/9781118808962.ch30Search in Google Scholar

[5] T. Horie, H. Iwahori, Y. Seno, Y. Awano, in: Mg Tech. 2000, H.I. Kaplan, J. Hryn, B. Clow (Eds.), TMS, Nashville, Tennessee (2000) 261.10.1002/9781118808962.ch36Search in Google Scholar

[6] J.F. Nie, B.C. Muddle: Scripta Mater. 37 (1997) 1475.10.1016/S1359-6462(97)00294-7Search in Google Scholar

[7] H. Alves, U. Köster, D. Eliezer, in: Proc. of the Second Israeli Int. Conf. on Mg Sci. and Tech., E. Aghion, D. Eliezer (Eds.), Mg Research. Inst., Dead Sea, Israel (2000) 347.Search in Google Scholar

[8] B.S. You, W.W. Park, I.S. Chung, in: Proc. of the Second Israeli Int. Conf. on Mg Sci. and Tech., E. Aghion, D. Eliezer (Eds.), Mg Research. Inst., Dead Sea, Israel (2000) 377.Search in Google Scholar

[9] P. Vostry´, I. Stulíková, B. Smola, W. Riehemann, B.L. Mordike: Mater. Sci. Eng. A 137 (1991) 87.10.1016/0921-5093(91)90321-DSearch in Google Scholar

[10] P.M. Jardim, I.G. Solorzano, J.B. Van der Sande: Mater. Sci. Eng. A 381 (2004) 196.10.1016/j.msea.2004.04.043Search in Google Scholar

[11] T. Larionova, W.W. Park, B.S. You: Scripta Mater. 45 (2001) 7.10.1016/S1359-6462(01)00982-4Search in Google Scholar

[12] JCPDS cards number 12-0266, 13-0450 and 35-821.Search in Google Scholar

[13] P. Villars, A. Prince, H. Okamoto: Handbook of Ternary Alloy Phase Diagrams, ASM Int. (1995) 7522.Search in Google Scholar

[14] T.B. Massalski, H. Okamoto, P.R. Subramanian, L. Kacprzaks (Eds.): Binary Alloy Phase Diagrams, ASM Int., Materials Park, OH (1992) 2571.Search in Google Scholar

[15] Landolt-Börnstein, Diffusion in Solid Metals and Alloys, Vol. III/ 26, 93 (Electronic Text).Search in Google Scholar

[16] T.B. Massalski, H. Okamoto, P.R. Subramanian, L. Kacprzaks (Eds.): Binary Alloy Phase Diagrams, ASM Int., Materials Park, OH (1992) 925.Search in Google Scholar
Received: 2005-03-22
Accepted: 2005-08-21
Published Online: 2022-01-07

© 2006 Carl Hanser Verlag, München

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. The Pd-rich part of the Pd–B phase diagram
  4. Thermodynamic optimizing of the Li–Sn system
  5. Thermodynamic analysis of high-temperature heazlewoodite
  6. Diffusion of chromium in β-Ti under high pressure
  7. Density and surface tension of liquid ternary Ni–Cu–Fe alloys
  8. Influence of electric field strength applied during the solution heat treatment of the Al–Mg–Si–Cu Alloy AA6111
  9. Development of cube recrystallization textures in high-purity Al
  10. Formation of cube recrystallized grains in high-purity Al
  11. Effect of various niobium additions on microstructure and mechanical behavior of a NiAl–Cr–Mo eutectic alloy
  12. The effect of exposure to elevated temperatures on the microstructure and hardness of Mg–Ca–Zn alloy
  13. Kinetics studies of hydrogen reduction of Cu2O
  14. Decomposition kinetics of expanded austenite with high nitrogen contents
  15. Estimation of the viscosity for Ag–In and In–Sb liquid alloys using different models
  16. Elevated temperature tensile properties of an extruded aluminium alloy reinforced with SiCp
  17. Richtlinien für Autoren
  18. Instructions for authors
  19. Personal/ personelles
  20. Press/ Presse
  21. Conferences /Konferenzen
  22. Frontmatter
  23. Editorial
  24. Editorial
  25. Articles Basic
  26. The Pd-rich part of the Pd–B phase diagram
  27. Thermodynamic optimizing of the Li–Sn system
  28. Thermodynamic analysis of high-temperature heazlewoodite
  29. Diffusion of chromium in β-Ti under high pressure
  30. Density and surface tension of liquid ternary Ni–Cu–Fe alloys
  31. Influence of electric field strength applied during the solution heat treatment of the Al–Mg–Si–Cu Alloy AA6111
  32. Articles Applied
  33. Development of cube recrystallization textures in high-purity Al
  34. Formation of cube recrystallized grains in high-purity Al
  35. Effect of various niobium additions on microstructure and mechanical behavior of a NiAl–Cr–Mo eutectic alloy
  36. The effect of exposure to elevated temperatures on the microstructure and hardness of Mg–Ca–Zn alloy
  37. Kinetics studies of hydrogen reduction of Cu2O
  38. Decomposition kinetics of expanded austenite with high nitrogen contents
  39. Estimation of the viscosity for Ag–In and In–Sb liquid alloys using different models
  40. Elevated temperature tensile properties of an extruded aluminium alloy reinforced with SiCp
  41. Notifications/Mitteilungen
  42. Richtlinien für Autoren
  43. Instructions for authors
  44. Personal/ personelles
  45. Press/ Presse
  46. Conferences /Konferenzen
https://doi.org/10.1515/ijmr-2006-0010
Keywords for this article
Mg alloys; Microstructure; Microstructural stability; Diffusion

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. The Pd-rich part of the Pd–B phase diagram
  4. Thermodynamic optimizing of the Li–Sn system
  5. Thermodynamic analysis of high-temperature heazlewoodite
  6. Diffusion of chromium in β-Ti under high pressure
  7. Density and surface tension of liquid ternary Ni–Cu–Fe alloys
  8. Influence of electric field strength applied during the solution heat treatment of the Al–Mg–Si–Cu Alloy AA6111
  9. Development of cube recrystallization textures in high-purity Al
  10. Formation of cube recrystallized grains in high-purity Al
  11. Effect of various niobium additions on microstructure and mechanical behavior of a NiAl–Cr–Mo eutectic alloy
  12. The effect of exposure to elevated temperatures on the microstructure and hardness of Mg–Ca–Zn alloy
  13. Kinetics studies of hydrogen reduction of Cu2O
  14. Decomposition kinetics of expanded austenite with high nitrogen contents
  15. Estimation of the viscosity for Ag–In and In–Sb liquid alloys using different models
  16. Elevated temperature tensile properties of an extruded aluminium alloy reinforced with SiCp
  17. Richtlinien für Autoren
  18. Instructions for authors
  19. Personal/ personelles
  20. Press/ Presse
  21. Conferences /Konferenzen
  22. Frontmatter
  23. Editorial
  24. Editorial
  25. Articles Basic
  26. The Pd-rich part of the Pd–B phase diagram
  27. Thermodynamic optimizing of the Li–Sn system
  28. Thermodynamic analysis of high-temperature heazlewoodite
  29. Diffusion of chromium in β-Ti under high pressure
  30. Density and surface tension of liquid ternary Ni–Cu–Fe alloys
  31. Influence of electric field strength applied during the solution heat treatment of the Al–Mg–Si–Cu Alloy AA6111
  32. Articles Applied
  33. Development of cube recrystallization textures in high-purity Al
  34. Formation of cube recrystallized grains in high-purity Al
  35. Effect of various niobium additions on microstructure and mechanical behavior of a NiAl–Cr–Mo eutectic alloy
  36. The effect of exposure to elevated temperatures on the microstructure and hardness of Mg–Ca–Zn alloy
  37. Kinetics studies of hydrogen reduction of Cu2O
  38. Decomposition kinetics of expanded austenite with high nitrogen contents
  39. Estimation of the viscosity for Ag–In and In–Sb liquid alloys using different models
  40. Elevated temperature tensile properties of an extruded aluminium alloy reinforced with SiCp
  41. Notifications/Mitteilungen
  42. Richtlinien für Autoren
  43. Instructions for authors
  44. Personal/ personelles
  45. Press/ Presse
  46. Conferences /Konferenzen
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