Abstract
Lightweighting has been deemed as one of the most effective strategies to improve fuel efficiency and reduce human-induced emissions in the automotive and aerospace industry. Magnesium alloy, as an ultra-lightweight metallic material, has recently received significant attention in the transportation industry to reduce the vehicle weight due to its high strength-to-weight ratio, dimensional stability, good machinability and recyclability. However, the hexagonal close-packed (hcp) crystal structure of magnesium alloys gives only limited slip systems and develops sharp deformation textures, leading to strong mechanical anisotropy and tension-compression yield asymmetry caused by the presence of twinning in compression and detwinning in tension when loading along the extrusion or rolling direction. For the vehicle components subjected to dynamic loading, such asymmetry could exert an unfavorable effect on the performance. This issue could be overcome through texture weakening via addition of rare-earth (RE) elements and other alloying elements to refine grains and generate nano-sized precipitates. To ensure the structural integrity, durability, and safety of load-bearing structural components, understanding the characteristics and mechanisms of deformation and fatigue of magnesium alloys is vitally important. In this talk, a few examples on the cyclic deformation behavior of extruded magnesium alloys containing both high and low RE contents will be presented in comparison with RE-free extruded magnesium alloys. Moreover, twinning, twin growth, and twin-twin interactions during uniaxial compression in the extrusion direction and de-twinning in the transverse direction will also be discussed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Barrett, S.: Choices in the climate common. Science 362, 1217 (2018)
Diffenbaugh, N.S., Singh, D., Mankin, J.S.: Unprecedented climate events: historical changes, aspirational targets, and national commitments. Sci. Adv. 4(2), eaao3354 (2018)
Anenberg, S.C., Miller, J., Minjares, R., Du, L., Henze, D.K., Lacey, F., Malley, C.S., Emberson, L., Franco, V., Klimont, Z., Heyes, C.: Impacts and mitigation of excess diesel-related NOx emissions in 11 major vehicle markets. Nature 545, 467–471 (2017)
Rockström, J., Gaffney, O., Rogelj, J., Meinshausen, M., Nakicenovic, N., Schellnhuber, H.J.: A roadmap for rapid decarbonization. Science 355, 1269–1271 (2017)
Patel, H.A., Chen, D.L., Bhole, S.D., Sadayappan, K.: Cyclic deformation and twinning in a semi-solid processed AZ91D magnesium alloy. Mater. Sci. Eng. A 528(1), 208–219 (2010)
Patel, H.A., Chen, D.L., Bhole, S.D., Sadayappan, K.: Low cycle fatigue behavior of a semi-solid processed AM60B magnesium alloy. Mater. Des. 49, 456–464 (2013)
Hadadzadeh, A., Mokdad, F., Amirkhiz, B.S., Wells, M.A., Williams, B., Chen, D.L.: Bimodal grain microstructure development during hot compression of a cast-homogenized Mg-Zn-Zr alloy. Mater. Sci. Eng. A 724, 421–430 (2018)
Lin, X.Z., Chen, D.L.: Strain controlled cyclic deformation behavior of an extruded magnesium alloy. Mater. Sci. Eng. A 496(1–2), 106–113 (2008)
Begum, S., Chen, D.L., Xu, S., Luo, A.A.: Low cycle fatigue properties of an extruded AZ31 magnesium alloy. Int. J. Fatigue 31(4), 726–735 (2009)
Begum, S., Chen, D.L., Xu, S., Luo, A.A.: Strain-controlled low cycle fatigue properties of a newly developed extruded magnesium alloy. Metall. Mater. Trans. A 39, 3014–3026 (2008)
Mokdad, F., Chen, D.L.: Strain-controlled low cycle fatigue properties of a rare-earth containing ZEK100 magnesium alloy. Mater. Des. 67, 436–447 (2015)
Mirza, F.A., Wang, K., Bhole, S.D., Friedman, J., Chen, D.L., Ni, D.R., Xiao, B.L., Ma, Z.Y.: Strain-controlled low cycle fatigue properties of a rare-earth containing ME20 magnesium alloy. Mater. Sci. Eng. A 661, 115–125 (2016)
Mirza, F.A., Chen, D.L., Li, D.J., Zeng, X.Q.: Low cycle fatigue of a rare-earth containing extruded magnesium alloy. Mater. Sci. Eng. A 575, 65–73 (2013)
Mirza, F.A., Chen, D.L., Li, D.J., Zeng, X.Q.: Cyclic deformation behavior of a rare-earth containing extruded magnesium alloy: effect of heat treatment. Metall. Mater. Trans. A 46(3), 1168–1187 (2015)
Mirza, F.A., Chen, D.L., Li, D.J., Zeng, X.Q.: Low cycle fatigue of an extruded Mg-3Nd-0.2Zn-0.5Zr magnesium alloy. Mater. Des. 64, 63–73 (2014)
Tahreen, N., Zhang, D.F., Pan, F.S., Jiang, X.Q., Li, C., Li, D.Y., Chen, D.L.: Characterization of hot deformation behavior of an extruded Mg-Zn-Mn-Y alloy containing LPSO phase. J. Alloy. Compd. 644, 814–823 (2015)
Tahreen, N., Zhang, D.F., Pan, F.S., Jiang, X.Q., Li, D.Y., Chen, D.L.: Strengthening mechanisms in magnesium alloys containing ternary I, W and LPSO phases. J. Mater. Sci. Technol. 34(7), 1110–1118 (2018)
Mirza, F.A., Chen, D.L.: Fatigue of rare-earth containing magnesium alloys: a review. Fatigue Fract. Eng. Mater. Struct. 37, 831–853 (2014)
Mokdad, F., Chen, D.L., Li, D.Y.: Single and double twin nucleation, growth, and interaction in an extruded magnesium alloy. Mater. Des. 119, 376–396 (2017)
Mokdad, F., Chen, D.L., Li, D.Y.: Twin-twin interactions and contraction twin formation in an extruded magnesium alloy subjected to an alteration of compressive direction. J. Alloy. Compd. 737, 549–560 (2018)
Acknowledgements
The author would like to acknowledge the financial support of Natural Sciences and Engineering Research Council of Canada (NSERC), Premier’s Research Excellence Award, NSERC-DAS, Canada Foundation for Innovation, and Ryerson Research Chair program, and thank his current and former graduate students and PDFs including Dr. F. Mokdad, Dr. F. A. Mirza, Dr. N. Tahreen, Dr. D. Sarker, Dr. D. R. Ni, Dr. C. L. Fan, Dr. W. P. Jia, Mr. S. M. A. K. Mohammed, Ms. S. Begum, Mr. H. A. Patel, Mr. X. Z. Lin, Ms. M. Luk, Mr. A. R. Emami, and Mr. K. Wang, and his research collaborators in this aspect including Prof. S. D. Bhole, Prof. J. Friedman, Prof. D. Y. Li, Prof. M. A. Wells, Prof. A. Luo, Dr. S. Xu, Dr. K. Sadayappan, Prof. X. Q. Zeng, Dr. D. J. Li, Prof. B. L. Xiao, Prof. Z. Y. Ma, Prof. X. Q. Jiang, Prof. D. F. Zhang, and Prof. F. S. Pan.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this paper
Cite this paper
Chen, D. (2019). Fatigue and Deformation of Light Magnesium Alloys. In: Gdoutos, E. (eds) Proceedings of the Second International Conference on Theoretical, Applied and Experimental Mechanics. ICTAEM 2019. Structural Integrity, vol 8. Springer, Cham. https://doi.org/10.1007/978-3-030-21894-2_25
Download citation
DOI: https://doi.org/10.1007/978-3-030-21894-2_25
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-21893-5
Online ISBN: 978-3-030-21894-2
eBook Packages: EngineeringEngineering (R0)