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Flow stress and deformation behavior of fine-grained Mg matrix influenced by bimodal size SiCp

Published online by Cambridge University Press:  11 May 2018

Cui-ju Wang ,
Kun-kun Deng ,
Jian-chao Li  and
Wei Liang
Cui-ju Wang
Affiliation:
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Kun-kun Deng*
Affiliation:
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Jian-chao Li
Affiliation:
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Wei Liang
Affiliation:
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

To obtain a fine-grained Mg matrix, the (submicron + micron) bimodal size SiC particle reinforced AZ91 (SiCp/AZ91) composite was subjected to forging followed by the extrusion process first. Then, the fine-grained bimodal size SiCp/AZ91 composite was compressed at 270–370 °C with 0.1–0.001 s−1. The result indicated that the refinement of the Mg matrix contributed to its deteriorated strength at high temperature. However, the grain size is not the only factor influencing flow stress but the SiCp also plays an important role. The effect of SiCp on the fine grained Mg matrix depends on grain size and dislocation density, both of which strongly depend on temperature and strain rate. As compared with the fine grained Mg matrix reinforced by single size SiCp, the one with bimodal size SiCp unusually exhibit lower flow stress during hot compression. The calculated activation energy of the bimodal size SiCp/AZ91 composite is higher than the micron SiCp/AZ91 composite; however, nearly the same as the submicron SiCp/AZ91 composite, and the deformation of which was thought to be controlled by ∼1 vol% submicron SiCp.

Keywords

Mgcompositeparticulate
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 12 , 28 June 2018 , pp. 1723 - 1732
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Copyright
Copyright © Materials Research Society 2018 

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References

REFERENCES

Wang, X.J., Xu, D.K., Wu, R.Z., Chen, X.B., Peng, Q.M., Jin, L., Xin, Y.C., Zhang, Z.Q., Liu, Y., Cheng, X.H., Chen, G., Deng, K.K., and Wang, H.Y.: What is going on in magnesium alloys? J. Mater. Sci. Technol. 34, 245 (2018).Google Scholar
Wang, X.J., Hu, X.S., Liu, W.Q., Du, J.F., Wu, K., Huang, Y.D., and Zheng, M.Y.: Ageing behavior of as-cast SiCp/AZ91 Mg matrix composites. Mater. Sci. Eng., A 682, 194 (2017).Google Scholar
Shen, M.J., Wang, X.J., Zhang, M.F., Zheng, M.Y., and Wu, K.: Significantly improved strength and ductility in bimodal-size grained microstructural magnesium matrix composites reinforced by bimodal sized SiCp over traditional magnesium matrix composites. Compos. Sci. Technol. 118, 85 (2015).Google Scholar
Chen, L.Q. and Yan, Y.T.: Microstructures and mechanical properties of magnesium matrix composites: A review. Acta Metall. Sin. (Engl. Lett.) 27, 762 (2014).CrossRefGoogle Scholar
Deng, K.K., Wang, X.J., Wu, Y.W., Hu, X.S., Wu, K., and Gan, W.M.: Effect of particle size on microstructure and mechanical properties of SiCp/AZ91 magnesium matrix composite. Mater. Sci. Eng., A 543, 158 (2012).Google Scholar
Shen, M.J., Wang, X.J., Ying, T., Wu, K., and Song, W.J.: Characteristics and mechanical properties of magnesium matrix composites reinforced with micron/submicron/nano SiC particles. J. Alloys Compd. 686, 831 (2016).Google Scholar
Deng, K.K., Shi, J.Y., Wang, C.J., Wang, X.J., Wu, Y.W., Nie, K.B., and Wu, K.: Microstructure and strengthening mechanism of bimodal size particle reinforced magnesium matrix composite. Composites, Part A 43, 1280 (2012).CrossRefGoogle Scholar
Zhang, L.J., Qiu, F., Wang, J.G., Wang, H.Y., and Jiang, Q.C.: Microstructures and mechanical properties of the Al2014 composites reinforced with bimodal sized SiC particles. Mater. Sci. Eng., A 637, 70 (2015).CrossRefGoogle Scholar
Zhou, S.S., Deng, K.K., Li, J.C., Nie, K.B., Xu, F.J., Zhou, H.F., and Fan, J.F.: Hot deformation behavior and workability characteristics of bimodal size SiCp/AZ91 magnesium matrix composite with processing map. Mater. Des. 64, 177 (2014).CrossRefGoogle Scholar
Deng, K.K., Li, J.C., Nie, K.B., Xu, F.J., and Wang, D.D.: Hot deformation behaviour of as-extruded micrometre SiCp reinforced AZ91 composite. Mater. Res. Innovations 19(Suppl. 4), 117 (2015).Google Scholar
Deng, K.K., Li, J.C., Xu, F.J., Nie, K.B., and Liang, W.: Hot deformation behavior and processing maps of fine-grained SiCp/AZ91 composite. Mater. Des. 67, 72 (2015).Google Scholar
Deng, K.K., Wang, X.J., Zheng, M.Y., and Wu, K.: Dynamic recrystallization behavior during hot deformation and mechanical properties of 0.2 μm SiCp reinforced Mg matrix composite. Mater. Sci. Eng., A 560, 824 (2013).Google Scholar
Wang, C.J., Deng, K.K., and Liang, W.: High temperature damping behavior controlled by submicron SiCp in bimodal size particle reinforced magnesium matrix composite. Mater. Sci. Eng., A 668, 55 (2016).Google Scholar
Zhou, S.S., Deng, K.K., Li, J.C., Shang, S.J., Liang, W., and Fan, J.F.: Effects of volume ratio on the microstructure and mechanical properties of particle reinforced magnesium matrix composite. Mater. Des. 63, 672 (2014).Google Scholar
Barnett, M.R., Beer, A.G., Atwell, D., and Oudin, A.: Influence of grain size on hot working stresses and microstructures in Mg–3Al–1Zn. Scripta Mater. 51, 18 (2004).Google Scholar
Sakai, T. and Jonas, J.J.: Dynamic recrystallization: Mechanical and microstructural considerations. Acta Metall. 32, 189 (1984).Google Scholar
Sakai, T., Belyakov, A., Kaibyshev, R., Miura, H., and Jonas, J.J.: Dynamic and post-dynamic recrystallization under hot, cold and sever plastic deformation conditions. Prog. Mater. Sci. 60, 130 (2014).CrossRefGoogle Scholar
Deng, K.K., Li, J.C., Nie, K.B., Wang, X.J., and Fan, J.F.: High temperature damping behavior of as-deformed Mg matrix influenced by micron and submicron SiCp. Mater. Sci. Eng., A 624, 62 (2015).Google Scholar
Li, J.C., Nie, K.B., Deng, K.K., Shang, S.J., Zhou, S.S., Xu, F.J., and Fan, J.F.: Microstructure stability of as-extruded bimodal size SiCp/AZ91 composite. Mater. Sci. Eng., A 615, 489 (2014).Google Scholar
Humphreys, F.J. and Kalu, P.N.: Dislocation-particle interactions during high temperature deformation of two-phase aluminium alloys. Acta Metall. 35, 2815 (1987).Google Scholar
Sabirov, I., Barnett, M.R., Estrin, Y., and Hodgson, P.D.: The effect of strain rate on the deformation mechanisms and the strain rate sensitivity of an ultra-fine-grained Al alloy. Scripta Mater. 61, 181 (2009).CrossRefGoogle Scholar
Tjong, S.C. and Ma, Z.Y.: High-temperature creep behaviour of powder-metallurgy aluminium composites reinforced with SiC particles of various sizes. Compos. Sci. Technol. 59, 1117 (1999).Google Scholar
Nieh, T.G., Wadsworth, J., and Sherby, O.D.: Superplasticity in Metals and Ceramics (Cambridge University Press, New York, 1997).Google Scholar
Vagarali, S.S. and Langdon, T.G.: Deformation mechanisms in h.c.p. metals at elevated temperatures—II. Creep behavior of a Mg–0.8% Al solid solution alloy. Acta Mater. 30, 1157 (1982).CrossRefGoogle Scholar
Frost, H.J. and Ashby, M.E.: Deformation Mechanism Maps (Pergamon Press, Oxford, 1982).Google Scholar