Abstract
The solidification characterization of Mg–xZn–0.5Zr (x = 0, 1, 3, 4, 5 wt%) alloys has been extensively investigated through thermal analysis, microstructure characterization and thermodynamic calculations. The impact of Zn content on the grain growth restriction, dendrite coherency and thus the final grain size has been investigated and discussed. Increasing Zn content, the grain size of Mg–xZn–0.5Zr alloy was firstly refined and then coarsened with the finest grain size of ~ 50 μm for the Mg–3Zn–0.5Zr (ZK31) alloy. Significant effects of the grain size on the mechanical properties were observed in the investigated alloys. The combination of growth restriction factor theory and dendrite coherency point provides a reasonable explanation of the grain size results. It helps to further understand the mechanisms of grain refinement and grain coarsening related to solute content, providing reference for alloy design and grain size prediction.
Similar content being viewed by others
References
K.N. Solanki, D. Orlov, A. Singh, N.R. Neelameggham (eds.), Magnesium Technology 2017 (Springer, Cham, 2017)
P.L. Zhang, Y.H. Zhao, R.P. Lu, Z.B. Ding, H. Hou, Acta Metall. Sin. -Engl. Lett. 32, 550 (2018)
H. Zengin, Y. Turen, M.E. Turan, F. Aydın, Acta Metall. Sin. -Engl. Lett. 32, 1309 (2019)
S.Q. Yin, Z.Q. Zhang, X. Liu, Q.C. Le, Q. Lan, L. Bao, J.Z. Cui, Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. 695, 135 (2017)
R.G. Guan, I. Johnson, T. Cui, T. Zhao, Z.Y. Zhao, X. Li, H.N. Liu, J. Biomed. Mater. Res. Part A 100, 999 (2012)
Y. Ali, D. Qiu, B. Jiang, F. Pan, M.X. Zhang, J. Alloys Compd. 619, 639 (2015)
M. Qian, L. Zheng, D. Graham, M.T. Frost, J. Light Met 1, 157 (2001)
M. Qian, D.H. StJohn, M.T. Frost, Scr. Mater. 46, 649 (2002)
M. Qian, D.H. StJohn, M.T. Frost, Scr. Mater. 50, 1115 (2004)
M. Easton, D. StJohn, Metall. Mater. Trans. A 36, 1911 (2005)
D.H. StJohn, M. Qian, M.A. Easton, P. Cao, Acta Mater. 59, 4907 (2011)
M. Qian, P. Cao, M.A. Easton, S.D. McDonald, D.H. StJohn, Acta Mater. 58, 3262 (2010)
D.H. Stjohn, M.A. Easton, P. Cao, M. Qian, Int. J. Cast. Met. Res. 20, 131 (2007)
I. Maxwell, A. Hellawell, Acta Metall. 23, 229 (1975)
T. Quested, A. Dinsdale, A. Greer, Acta Mater. 53, 1323 (2005)
H. Xu, L.D. Xu, S.J. Zhang, Q. Han, Scr. Mater. 54, 2191 (2006)
Y.C. Lee, A.K. Dahle, D.H. StJohn, Metall. Mater. Trans. A 31, 2895 (2000)
J. Gu, Y. Huang, M. Zhang, K.U. Kainer, N. Hort, Effects of Mn and Zn solutes on grain refinement of commercial pure magnesium, in Magnesium Technology 2017, ed. by K.N. Solanki, D. Orlov, A. Singh, N.R. Neelameggham (Springer, Cham, 2017), pp. 191–198
S. Liang, Dissertation, Institute of Metal Research, Chinese Academy of Sciences (2010)
X. Yao, A.K. Dahle, C.J. Davidson, D.H. StJohn, J. Mater. Sci. 42, 9756 (2007)
M. Malekan, S.G. Shabestari, Metall. Mater. Trans. A 40, 3196 (2009)
G.C. Chai, L. Backerud, T. Rolland, L. Arnberg, Metall. Mater. Trans. A 26, 965 (1995)
Z. Hildebrand, M. Qian, D. StJohn, M. Frost, Influence of zinc on the soluble zirconium content in magnesium and the subsequent grain refinement by zirconium, in Magnesium Technology 2004, ed. by A.A. Luo (Springer, Cham, 2004), pp. 241–245
C.H. Cáceres, A. Blake, Phys. Status Solidi A 194, 147 (2002)
S.M. Liang, R.S. Chen, J.J. Blandin, M. Suery, E.H. Han, Mater. Sci. Eng. A 480, 365 (2008)
Z.H. Huang, S.M. Liang, R.S. Chen, E.H. Han, J. Alloys Compd. 468, 170 (2009)
W. Cao, S.L. Chen, F. Zhang, K. Wu, Y. Yang, Y.A. Chang, R. Schmid-Fetzer, W.A. Oates, Calphad 33, 328 (2009)
R. Schmid-Fetzer, J. Gröbner, Metals 2, 377 (2012)
R. Schmid-Fetzer, A. Kozlov, Acta Mater. 59, 6133 (2011)
M. Qian, Z.C.G. Hildebrand, D.H. StJohn, Metall. Mater. Trans. A 40, 2470 (2009)
M.A. Easton, D.H. StJohn, Acta Mater. 49, 1867 (2001)
Y.P. Xie, Z.Y. Wang, Z.F. Hou, Scr. Mater. 68, 495 (2013)
R.W. Armstrong, Mater. Trans. 55, 2 (2014)
J.D. Robson, C. Paa-Rai, Acta Mater. 95, 10 (2015)
K. Kurz, D.J. Fisher, Fundamentals of Solidification, 4th edn. (Trans Tech Publications, 1984)
J.D. Hunt, Mater. Sci. Eng. 65, 75 (1984)
Acknowledgements
Z.W. Shan and his students acknowledge the supports by the National Key Research and Development Program of China (No. 2017YFB0702001) and the Natrual Science Foundation of China (No. 51621063). They also appreciate the support from the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies, the Collaborative Innovation Center of High-End Manufacturing Equipment and the Science and Technology Department of Shaanxi Province (Nos. 2016KTZDGY-04-03 and 2016KTZDGY-04-04). R.S. Chen and his students acknowledge the National Natural Science Foundation for Young Scholars (No. 51701218) and the National Science and Technology Major Project of China through Project No. 2017ZX04014001.
Author information
Authors and Affiliations
Corresponding authors
Additional information
Available online at http://link.springer.com/journal/40195.
Rights and permissions
About this article
Cite this article
Li, P., Hou, D., Han, EH. et al. Solidification of Mg–Zn–Zr Alloys: Grain Growth Restriction, Dendrite Coherency and Grain Size. Acta Metall. Sin. (Engl. Lett.) 33, 1477–1486 (2020). https://doi.org/10.1007/s40195-020-01069-1
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40195-020-01069-1