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Published in: Journal of Materials Engineering and Performance 11/2014

01-11-2014

Effects of Solution Heat Treatment on Microstructure and Mechanical Properties of the Mg-4.5Zn-4.5Sn-2Al-0.6Sr Alloy

Authors: Guanghao Zhang, Jihua Chen, Hongge Yan, Bin Su

Published in: Journal of Materials Engineering and Performance | Issue 11/2014

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Abstract

Microstructure and mechanical properties of the Mg-4.5Zn-4.5Sn-2Al-0.6Sr alloy are investigated both in the as-cast condition and after the different three-step solution heat treatments (a solution heat treatment of 310 °C × 4 h + 340 °C × 28 h followed by a high-temperature solution treatment) to explore the optimal solution treatment cycle. The as-cast alloy contains a microstructure consisting of the α-Mg matrix, Mg2Sn, Mg51Zn20, Mg32(Al, Zn)49, and MgSnSr phases. After the solution heat treatment, all the Mg51Zn20, the Mg32(Al, Zn)49 phases, and most of the Mg2Sn phase are dissolved into the matrix, only the MgSnSr phase and a minority of the Mg2Sn phase are remained in the granular form or the fine dot-like. The volume fraction of the residual second phases decreases from 5.61 to 1.84% with the increasing solution time from 0 to 4 h at 420 °C and it decreases from 2.9 to 0.4% with the increasing solution temperature from 420 to 480 °C for 2 h. The alloy that experiences the solution treatment of 310 °C × 4 h + 340 °C × 28 h + 460 °C × 2 h exhibits the highest strength and the best plasticity among all the solution-treated alloys. Therefore, the optimal solution treatment is 310 °C × 4 h + 340 °C × 28 h + 460 °C × 2 h. The residual second phases in the alloy that experiences the optimal solution treatment are confirmed to be the Mg2Sn phase and the MgSnSr phase which are related to their relatively high thermal stability. The ultimate tensile strength and the elongation to rupture of the as-solutionized alloy are 238 MPa and 12%, respectively, about 25 MPa and 2.4% higher than the counterparts of the as-cast alloy.

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Literature
1.
go back to reference G.Y. Yuan, M.P. Liu, W.J. Ding et al., Microstructure and Mechanical Properties of Mg-Zn-Si Based Alloys, Mater. Sci. Eng. A, 2003, 357, p 314–320CrossRef G.Y. Yuan, M.P. Liu, W.J. Ding et al., Microstructure and Mechanical Properties of Mg-Zn-Si Based Alloys, Mater. Sci. Eng. A, 2003, 357, p 314–320CrossRef
2.
go back to reference T.T. Sasaki, J.D. Ju, K. Hono et al., Heat-Treatable Mg-Sn-Zn Wrought Alloy, Scripta Mater., 2009, 61, p 80–83CrossRef T.T. Sasaki, J.D. Ju, K. Hono et al., Heat-Treatable Mg-Sn-Zn Wrought Alloy, Scripta Mater., 2009, 61, p 80–83CrossRef
3.
go back to reference S. Harosh, L. Miller, G. Levi et al., Microstructure and Properties of Mg-5.6%Sn-4.4%Zn-2.1%Al Alloy, J. Mater. Sci., 2007, 42, p 9983–9989CrossRef S. Harosh, L. Miller, G. Levi et al., Microstructure and Properties of Mg-5.6%Sn-4.4%Zn-2.1%Al Alloy, J. Mater. Sci., 2007, 42, p 9983–9989CrossRef
4.
go back to reference T.T. Sasaki, K. Yamamoto, T. Honma, S. Kamado, and K. Hono, A High-Strength Mg-Sn-Zn-Al Alloy Extruded at Low Temperature, Scripta Mater., 2008, 59, p 1111–1114CrossRef T.T. Sasaki, K. Yamamoto, T. Honma, S. Kamado, and K. Hono, A High-Strength Mg-Sn-Zn-Al Alloy Extruded at Low Temperature, Scripta Mater., 2008, 59, p 1111–1114CrossRef
5.
go back to reference W.L. Xiao, S.S. Jia, J.L. Wang et al., The Influence of Mischmetal and Tin on the Microstructure and Mechanical Properties of Mg-6Zn-5Al-Based Alloys, Acta Mater., 2008, 56(5), p 934–941CrossRef W.L. Xiao, S.S. Jia, J.L. Wang et al., The Influence of Mischmetal and Tin on the Microstructure and Mechanical Properties of Mg-6Zn-5Al-Based Alloys, Acta Mater., 2008, 56(5), p 934–941CrossRef
6.
go back to reference M.B. Yang and F.S. Pang, Effects of Sn Addition on As-Cast Microstructure, Mechanical Properties and Casting Fluidity of ZA84 Magnesium Alloy, Mater. Des., 2010, 31(1), p 68–75CrossRef M.B. Yang and F.S. Pang, Effects of Sn Addition on As-Cast Microstructure, Mechanical Properties and Casting Fluidity of ZA84 Magnesium Alloy, Mater. Des., 2010, 31(1), p 68–75CrossRef
7.
go back to reference J.H. Chen, Z.H. Chen, H.G. Yan et al., Effects of Sn Addition on Microstructure and Mechanical Properties of Mg-Zn-Al Alloys, J. Alloy Compd., 2008, 461(1–2), p 209–215 J.H. Chen, Z.H. Chen, H.G. Yan et al., Effects of Sn Addition on Microstructure and Mechanical Properties of Mg-Zn-Al Alloys, J. Alloy Compd., 2008, 461(1–2), p 209–215
8.
go back to reference M.B. Yang, L. Cheng, and F.S. Pan, Effects of Calcium Addition on As-Cast Microstructure and Mechanical Properties of Mg-5Zn-5Sn Alloy, Trans. Nonferr. Met. Soc. China, 2010, 20, p 769–775CrossRef M.B. Yang, L. Cheng, and F.S. Pan, Effects of Calcium Addition on As-Cast Microstructure and Mechanical Properties of Mg-5Zn-5Sn Alloy, Trans. Nonferr. Met. Soc. China, 2010, 20, p 769–775CrossRef
9.
go back to reference S. Cohen, G.R. Goren-Muginstein, S. Avraham et al., Phase Formation, Precipitation and Strengthening Mechanisms in Mg-Zn-Sn and Mg-Zn-Sn-Ca Alloys, Magnesium Technology, A.A. Luo, Ed., TMS, Warrendale, PA, 2004, p 301–305 S. Cohen, G.R. Goren-Muginstein, S. Avraham et al., Phase Formation, Precipitation and Strengthening Mechanisms in Mg-Zn-Sn and Mg-Zn-Sn-Ca Alloys, Magnesium Technology, A.A. Luo, Ed., TMS, Warrendale, PA, 2004, p 301–305
10.
go back to reference A. Gorny, M. Bamberger, and A. Katsman, High Temperature Phase Stabilized Microstructure in Mg-Zn-Sn Alloys with Y and Sb Additions, J. Mater. Sci., 2007, 42, p 10014–10022CrossRef A. Gorny, M. Bamberger, and A. Katsman, High Temperature Phase Stabilized Microstructure in Mg-Zn-Sn Alloys with Y and Sb Additions, J. Mater. Sci., 2007, 42, p 10014–10022CrossRef
11.
go back to reference W.N. Tang, S.S. Park, and B.S. You, Effect of the Zn Content on the Microstructure and Mechanical Properties of Indirect-Extruded Mg-5Sn-xZn Alloys, Mater. Des., 2011, 32, p 3537–3543CrossRef W.N. Tang, S.S. Park, and B.S. You, Effect of the Zn Content on the Microstructure and Mechanical Properties of Indirect-Extruded Mg-5Sn-xZn Alloys, Mater. Des., 2011, 32, p 3537–3543CrossRef
12.
go back to reference H.-T. Son, D.-G. Kim, and J.S. Park, Effects of Ag Addition on Microstructures and Mechanical Properties of Mg-6Zn-2Sn-0.4Mn-Based Alloy System, Mater. Lett., 2011, 65, p 3150–3153CrossRef H.-T. Son, D.-G. Kim, and J.S. Park, Effects of Ag Addition on Microstructures and Mechanical Properties of Mg-6Zn-2Sn-0.4Mn-Based Alloy System, Mater. Lett., 2011, 65, p 3150–3153CrossRef
13.
go back to reference X.Q. Pan, J.H. Chen, H.G. Yan, B. Su, J.Y. Wei, and C. Fan, Effects of the Zn/Sn Mass Ratio on Microstructure and Mechanical Properties of the Mg-Zn-Sn-Al-Ca Alloys, Mater. Sci. Technol. Lond., 2013, 29(2), p 169–176CrossRef X.Q. Pan, J.H. Chen, H.G. Yan, B. Su, J.Y. Wei, and C. Fan, Effects of the Zn/Sn Mass Ratio on Microstructure and Mechanical Properties of the Mg-Zn-Sn-Al-Ca Alloys, Mater. Sci. Technol. Lond., 2013, 29(2), p 169–176CrossRef
14.
go back to reference X. He, J.H. Chen, H.G. Yan, B. Su, G.H. Zhang, and C.M. Miao, Effects of Minor Sr Addition on Microstructure and Mechanical Properties of the As-Cast Mg-4.5Zn-4.5Sn-2Al-Based Alloy System, J. Alloy Compd., 2013, 579, p 39–44CrossRef X. He, J.H. Chen, H.G. Yan, B. Su, G.H. Zhang, and C.M. Miao, Effects of Minor Sr Addition on Microstructure and Mechanical Properties of the As-Cast Mg-4.5Zn-4.5Sn-2Al-Based Alloy System, J. Alloy Compd., 2013, 579, p 39–44CrossRef
15.
go back to reference P. Ghosh, M. Mezbahul-Islam, and M. Medraj, Critical Assessment and Thermodynamic Modeling of Mg-Zn, Mg-Sn, Sn-Zn and Mg-Sn-Zn Systems, Calphad, 2012, 36, p 28–43CrossRef P. Ghosh, M. Mezbahul-Islam, and M. Medraj, Critical Assessment and Thermodynamic Modeling of Mg-Zn, Mg-Sn, Sn-Zn and Mg-Sn-Zn Systems, Calphad, 2012, 36, p 28–43CrossRef
16.
go back to reference J. Gröner, A. Janz, A. Kozlov, D. Mirković, and R. Schmid-Fetzer, Phase Diagrams of Advanced Magnesium Alloys Containing Al, Ca, Sn, Sr and Mn, JOM, 2008, 60(12), p 32–38CrossRef J. Gröner, A. Janz, A. Kozlov, D. Mirković, and R. Schmid-Fetzer, Phase Diagrams of Advanced Magnesium Alloys Containing Al, Ca, Sn, Sr and Mn, JOM, 2008, 60(12), p 32–38CrossRef
17.
go back to reference Z.H. Chen, Creep Resistant Magnesium Alloy, Chemical Industry Press, Beijing, 2007, p 431–459 Z.H. Chen, Creep Resistant Magnesium Alloy, Chemical Industry Press, Beijing, 2007, p 431–459
18.
go back to reference H.M. Liu, Y.G. Chen, H.F. Zhao, S.H. Wei, and W. Gao, Effects of Strontium on Microstructure and Mechanical Properties of As-Cast Mg-5 wt.%Sn alloy, J. Alloy Compd., 2010, 504(2), p 345–350CrossRef H.M. Liu, Y.G. Chen, H.F. Zhao, S.H. Wei, and W. Gao, Effects of Strontium on Microstructure and Mechanical Properties of As-Cast Mg-5 wt.%Sn alloy, J. Alloy Compd., 2010, 504(2), p 345–350CrossRef
19.
go back to reference Y. Wang, G. Liu, and Z. Fan, A New Heat Treatment Procedure for Rheo-Diecast AZ91D Magnesium Alloy, Scripta Mater., 2006, 54, p 903–908CrossRef Y. Wang, G. Liu, and Z. Fan, A New Heat Treatment Procedure for Rheo-Diecast AZ91D Magnesium Alloy, Scripta Mater., 2006, 54, p 903–908CrossRef
Metadata
Title
Effects of Solution Heat Treatment on Microstructure and Mechanical Properties of the Mg-4.5Zn-4.5Sn-2Al-0.6Sr Alloy
Authors
Guanghao Zhang
Jihua Chen
Hongge Yan
Bin Su
Publication date
01-11-2014
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 11/2014
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-014-1193-3

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