Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-26T03:13:27.010Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of Sm on microstructure and corrosion resistance of hot-extruded AZ61 magnesium alloys

Published online by Cambridge University Press:  09 December 2015

Zhi Hu ,
Xiao Li ,
Qun Hua ,
Hong Yan ,
Hong Xv Qiu ,
Xian Ming Ruan  and
Zheng Hua Li
Zhi Hu*
Affiliation:
Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China
Xiao Li
Affiliation:
Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China
Qun Hua
Affiliation:
Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China
Hong Yan
Affiliation:
Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China
Hong Xv Qiu
Affiliation:
Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China
Xian Ming Ruan
Affiliation:
Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China
Zheng Hua Li
Affiliation:
Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

In this study, the effects of Sm on the microstructure and corrosion resistance of hot-extruded AZ61 magnesium alloys were investigated by optical microscopy, scanning electron microscopy, and transmission electron microscopy. The results showed that uniformly dispersed Al2Sm particles with size of ∼2 μm were discovered in the hot-extruded AZ61 magnesium alloy sample modified with 1.0 wt% Sm, which promoted dynamic recrystallization grain growth during the hot-extruded process, gradually increasing the grain of the alloy as Sm content increased. The morphology of the corroded surface and the corrosion rate of the hot-extruded AZ61 magnesium alloy both were significantly improved after Sm addition. The alloy sample modified with 2.0 wt% Sm after immersion in 3.5 wt% NaCl solution for 12 h showed minimum corrosion rate value, 3.1 mg/cm2 day, which is only 3.7% of the corrosion rate of unmodified alloy (82 mg/cm2 day).

Keywords

magnesiumhot-extrudedrare earthmicrostructurecorrosion resistance
Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 23 , 14 December 2015 , pp. 3671 - 3681
Copyright
Copyright © Materials Research Society 2015 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Olguín-González, M.L., Hernández-Silva, D., García-Berna, M.A., and Sauce-Range, V.M.: Hot deformation behavior of hot-rolled AZ31 and AZ61 magnesium alloys. Mater. Sci. Eng., A 82, 597 (2014).Google Scholar
Krishna, L.R., Poshal, G., Jyothirmayi, A., and Sundararajan, G.: Relative hardness and corrosion behavior of micro arc oxidation coatings deposited on binary and ternary magnesium alloys. Mater. Des. 77, 6–14 (2015).Google Scholar
Atrens, A., Song, G.L., Liu, M., Shi, Z., Cao, F., and Dargusch, M.S.: Review of recent developments in the field of magnesium corrosion. Adv. Eng. Mater. 17, 400 (2015).Google Scholar
Atrens, A., Song, G.L., Cao, F., Shi, Z., and Bowen, P.K.: Advances in Mg corrosion and research suggestions. J. Magnesium Alloys 1, 177 (2013).Google Scholar
Jo, S.M., Park, K.C., Kim, H.B., Kimura, H., Park, S.K., and Park, Y.H.: Investigation on the microstructure and mechanical properties of Mg-Al-Yb alloys. Mater. Trans. 52, 1088 (2011).Google Scholar
Ohhashi, S., Suzuki, K., Kato, A., and Tsai, A.P.: Phase formation and stability of quasicrystal/α-Mg interfaces in the Mg-Cd-Yb system. Acta Mater. 68, 116 (2014).CrossRefGoogle Scholar
Li, Q.A., Li, X.F., Zhang, Q., and Chen, J.: Effect of rare-earth element Sm on the corrosion behavior of Mg-6Al-1.2Y-0.9Nd alloy. Rare Met. 6, 557 (2010).Google Scholar
Huang, W.X. and Yan, H.: Preparation and theoretic study of semi-solid Al2Y/AZ91 magnesium matrix composites slurry by ultrasonic vibration source. J. Rare Earths 32, 573 (2014).Google Scholar
Zhang, J.L., Liu, Y.L., Zhou, J., Feng, Z.Y., and Wang, S.B.: Kinetic study on the corrosion behavior of AM60 magnesium alloy with different Nd contents. J. Alloys Compd. 629, 290 (2015).Google Scholar
Sankaranarayanan, S., Carsten, B., Baoshu, M.N., Wai, L.E.W., Chwee, S.G., Norbert, H., and Manoj, G.: Effect of erbium modification on the microstructure, mechanical and corrosion characteristics of binary Mg-Al alloys. J. Alloys Compd. 648, 759 (2015).Google Scholar
Cui, X.M., Bai, P.C., Hou, X.H., Liu, W., and Wang, L.Y.: Effect of erbium addition on microstructure and corrosion resistance of AZ91 magnesium alloy. Chin. Rare Earths 36, 110 (2015).Google Scholar
Jia, R.L., Zhang, M., Zhang, L.N., Zhang, W., and Guo, F.: Correlative change of corrosion behavior with the microstructure of AZ91 Mg alloy modified with Y additions. J. Alloys Compd. 634, 263 (2015).Google Scholar
Jin, W.H., Guo, G.S., Feng, H.Q., Wang, W.H., Zhang, X.M., and Chu, P.K.: Improvement of corrosion resistance and biocompatibility of rare-earth WE43 magnesium alloy by neodymium self-ion implantation. Corros. Sci. 94, 142 (2015).Google Scholar
Zhang, A.M., Hao, H., Liu, X.T., and Zhang, X.G.: Effects of precipitates on grain size and mechanical properties of AZ31-x%Nd magnesium alloy. J. Rare Earths 32, 451 (2014).Google Scholar
Liu, W.J., Cao, F.H., Chang, L.R., Zhang, Z., and Zhang, J.Q.: Effect of rare earth element Ce and La on corrosion behavior of AM60 magnesium alloy. Corros. Sci. 51, 1334 (2009).Google Scholar
Jain, C.C. and Koo, C.H.: Creep and corrosion properties of the extruded magnesium alloy containing rare earth. Mater. Trans. 48, 265 (2007).Google Scholar
Wu, D.G., Yan, S.H., Wang, Z.Q., Zhang, Z.Q., Miao, R.Y., Zhang, X.W., and Chen, D.H.: Effect of samarium on microstructure and corrosion resistance of aged as-cast AZ92 magnesium alloy. J. Rare Earths 32, 663 (2014).Google Scholar
Huang, Z.H., Qi, W.J., Xu, J., and Cai, C.: Microstructures and mechanical properties of Mg-Al-Sm series heat-resistant magnesium alloys. Trans. Nonferrous Met. Soc. China 25, 22 (2015).Google Scholar
Sun, M., Hu, X.Y., Peng, L.M., Fu, P.H., and Peng, Y.H.: Effects of Sm on the grain refinement, microstructures and mechanical properties of AZ31 magnesium alloy. Mater. Sci. Eng., A 620, 89 (2014).Google Scholar
Wang, C.L., Dai, J.C., Liu, W.C., Zhang, L., and Wu, G.H.: Effect of Al additions on grain refinement and mechanical properties of Mg-Sm alloys. J. Alloys Compd. 620, 172 (2015).Google Scholar
Hou, S.H. and Napolitano, R.E.: Modeling of thermodynamic properties and phase equilibria for the Al-Sm binary system. Metall. Mater. Trans. A 39, 502 (2008).Google Scholar
Wang, C.P., Zhang, H.L., Wang, S.L., Lin, Z., Liu, X.J., Tang, A.T., and Pan, F.S.: Thermodynamic assessments of the Mn-Sm and Mn-Ho systems. J. Alloys Compd. 481, 291 (2009).Google Scholar
Kim, J. and Jung, I.H.: Critical systematic evaluation and thermodynamic optimization of the Mn-RE system: RE = La, Ce, Pr, Nd and Sm. J. Alloys Compd. 525, 191 (2012).Google Scholar
Son, H.T., Lee, J.S., Kim, D.G., Yoshimi, K., and Maruyama, K.: Microstructure and dynamic ultra-micro hardness of the as-cast and extruded Mg-Al-Ca-Sm alloys. Adv. Mater. Res. 24–25, 153 (2007).Google Scholar
Saccone, A., Cacciamani, G., Maccio, D., Borzone, G., and Ferro, R.: Contribution to the study of the alloys and intermetallic compounds of aluminium with the rare-earth metals. Intermetallics 6, 201 (1998).Google Scholar
Son, H.T., Lee, J.S., and Kim, D.G.: Effects of samarium (Sm) additions on the microstructure and mechanical properties of as-cast and hot-extruded Mg-5 wt%Al-3 wt%Ca-based alloys. J. Alloys Compd. 473, 446 (2009).Google Scholar
Wang, J.L., Wang, L.D., Wu, Y.M., and Wang, L.M.: Effects of samarium on microstructures and tensile properties of Mg-5Al-0.3Mn alloy. Mater. Sci. Eng., A 528, 4115 (2011).Google Scholar
Wu, H.Y., Yang, J.C., Liao, J.H., and Zhu, F.J.: Dynamic behavior of extruded AZ61 Mg alloy during hot compression. Mater. Sci. Eng., A 535, 68 (2012).Google Scholar
Zhang, T., Meng, G.Z., Shao, Y.W., Cui, Z.Y., and Wang, F.H.: Corrosion of hot extrusion AZ91 magnesium alloy. Part II: Effect of rare earth element neodymium (Nd) on the corrosion behavior of extruded alloy. Corros. Sci. 53, 2934 (2011).Google Scholar
Zhu, S.J., Liu, Z.D., Qu, R.X., Wang, L.G., Li, Q.K., and Guan, S.K.: Effect of rare earth and Mn elements on the corrosion behavior of extruded AZ61 system in 3.5 wt% NaCl solution and salt spray test. J. Magnesium Alloys 1, 249 (2013).Google Scholar
Li, K.J., Li, Q.A., Jing, X.T., Chen, J., Zhang, X.Y., and Zhang, Q.: Effects of Sm addition on microstructure and mechanical properties of Mg-6Al-0.6Zn alloy. Scr. Mater. 60, 1101 (2009).Google Scholar
Blaz, L., Sakai, T., and Jonas, J.J.: Effect of initial grain size on dynamic recrystallization of copper. Met. Sci. 17, 609 (1983).Google Scholar
Cao, F.Y., Shi, Z.M., Song, G.L., Liu, M., and Atrens, A.: Corrosion behaviour in salt spray and in 3.5% NaCl solution saturated with Mg(OH)2 of as-cast and solution heat-treated binary Mg-X alloys: X = Mn, Sn, Ca, Zn, Al, Zr, Si, Sr. Corros. Sci. 76, 60 (2013).Google Scholar
Niu, J.X., Chen, Q.R., Xu, N.X., and Wei, Z.L.: Effect of combinative addition of strontium and rare earth elements on corrosion resistance of AZ91D magnesium alloy. Trans. Nonferrous Met. Soc. China 18, 1058 (2008).Google Scholar
Yang, J., Yi, D.Q., and Deng, S.H.: Effect of trace Nd on microstructure and corrosion resistance of AZ91 magnesium alloy. J. Mater. Sci. Eng. 26. 251 (2008).Google Scholar
Liu, W.J., Cao, F.H., Chen, A.N., Chang, L.R., Zhang, J.Q., and Cao, C.N.: Corrosion behaviour of AM60 magnesium alloys containing Ce or La under thin electrolyte layers. Part 1: Microstructural characterization and electrochemical behavior. Corros. Sci. 52, 627 (2010).Google Scholar