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Effect of Nd additions on fatigue characteristics of a cast Mg–Zn–Zr alloy

Published online by Cambridge University Press:  09 February 2017

Zhenming Li*
Affiliation:
Institute of Sci-technology Strategy, JiangXi Academy of Sciences, Nanchang 330096, People’s Republic of China
Hui Zou
Affiliation:
Institute of Sci-technology Strategy, JiangXi Academy of Sciences, Nanchang 330096, People’s Republic of China
Xuejiao Feng
Affiliation:
Institute of Sci-technology Strategy, JiangXi Academy of Sciences, Nanchang 330096, People’s Republic of China
Jichun Dai
Affiliation:
Research Institute (R & D Center), China Baowu Steel Group Corporation, Shanghai 201900, People’s Republic of China
Zhengqiang Xiao
Affiliation:
Institute of Sci-technology Strategy, JiangXi Academy of Sciences, Nanchang 330096, People’s Republic of China
Liming Peng*
Affiliation:
National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
*
a) Address all correspondence to these authors. e-mail: lizhenming516@163.com
b) e-mail: plm616@sjtu.edu.cn
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Abstract

The push–pull fatigue characteristics of the peak-aged Mg–0.2Zn–0.5Zr alloys with different addition levels of neodymium (Nd) have been investigated. The fatigue strength (σf) of the Mg–xNd–0.2Zn–0.5Zr (NZx0K) alloy increases proportionally with the increase of the Nd content (C Nd) as follows: σf (T6) ≈ (13.8–14.0) C Nd + 46 (for x between 0 and 3.0 wt%). The cyclic stress amplitude also increases but the plastic strain value decreases with the increase of the Nd content. The studied alloys exhibit the strain hardening followed by cyclic softening during fatigue test. During the low-cycle fatigue (LCF) test, the cracks originate from the cyclic deformation and cumulative damage. In high-cycle fatigue (HCF), the failure is due to the cyclic deformation and damage irreversibly caused by environment-assisted cyclic slip. The LCF lives of the alloys fitted well with the Coffin–Manson relation and Basquin laws, the three-parameter equation, and the energy-based concepts. The developed multi-scale fatigue (MSF) life models can be used to predict the LCF and HCF lives of the alloys. Among these models, the MSF life can well capture the influence of Nd addition on fatigue.

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Articles
Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Jürgen Eckert

References

REFERENCES

Hirsch, J. and Al-Samman, T.: Superior light metals by texture engineering: Optimized aluminum and magnesium alloys for automotive applications. Acta Mater. 61, 818 (2013).Google Scholar
Luo, A.A.: Magnesium castings technology for structural applications. J. Magnesium Alloy 1, 2 (2013).Google Scholar
Gall, K., Biallas, G., Maier, H.J., Gullett, P., Horstemeyer, M.F., McDowell, D.L., and Fan, J.H.: In-situ observations of high cycle fatigue mechanisms in cast AM60B magnesium in vacuum and water vapor environments. Int. J. Fatigue 26, 59 (2004).Google Scholar
Sonsino, C.M. and Dieterich, K.: Fatigue design with cast magneiusm alloys under constant and variable amplitude loading. Int. J. Fatigue 28, 183 (2006).Google Scholar
Begum, S., Chen, D.L., Xu, S., and Luo, A.A.: Strain-controlled low-cycle fatigue properties of a newly developed extruded magnesium alloy. Metall. Mater. Trans. A 39, 3014 (2008).CrossRefGoogle Scholar
Mayer, H., Papakyriacou, M., Zettl, B., and Stanzl-Tschegg, S.E.: Influence of porosity on the fatigue limit of die cast magnesium and aluminum alloys. Int. J. Fatigue 25, 245 (2003).CrossRefGoogle Scholar
Horstemeyer, M.F., Yang, N., Gall, K., McDowell, D.L., Fan, J., and Gullett, P.M.: High cycle fatigue of a die cast AZ91E-T4 magnesium alloy. Acta Mater. 52, 1327 (2004).Google Scholar
Lorenzo, M., Alegre, J.M., and Cuesta, I.I.: Magnesium alloy defectology AZ91D high-pressure die cast and influence on the fatigue behaviour. Fatigue Fract. Eng. Mater. Struct. 36, 1017 (2013).Google Scholar
Li, Z.M., Wang, Q.G., Luo, A.A., Peng, L.M., and Zhang, P.: Fatigue behavior and life prediction of cast magnesium alloys. Mater. Sci. Eng., A 647, 113 (2015).CrossRefGoogle Scholar
Li, Z.M., Wang, Q.G., Luo, A.A., Fu, P.H., Peng, L.M., Wang, Y.X., and Wu, G.H.: High cycle fatigue of cast Mg–3Nd–0.2Zn magnesium alloys. Metall. Mater. Trans. A 44, 5202 (2013).Google Scholar
Mokhtarishirazabad, M., Azadi, M., Farrahi, G.H., Winter, G., and Eichlseder, W.: Improvement oh high temperature fatigue lifetime in AZ91 magnesium alloy by heat treatment. Mater. Sci. Eng., A 588, 357 (2013).Google Scholar
Nový, F., Janeček, M., Škorik, V., and Wagner, L.: Very high cycle fatigue behaviour of as-extruded AZ31, AZ80, and ZK60 magnesium alloys. Int. J. Mater. Res. 100, 288 (2009).Google Scholar
Lin, Y.C., Chen, X.M., Liu, Z.H., and Chen, J.: Investigation of uniaxial low-cycle fatigue failure behavior of hot-rolled AZ91 magnesium alloy. Int. J. Fatigue 48, 122 (2013).Google Scholar
Mokhtarishirazabad, M., Boutorabi, S.M.A., Azadi, M., and Nikravan, M.: Effect of rare earth elements on high cycle fatigue behavior of AZ91 alloy. Mater. Sci. Eng., A 587, 179 (2013).CrossRefGoogle Scholar
Jiang, L.K., Liu, W.C., Wu, G.H., and Ding, W.J.: Effect of chemical composition on the microstructure, tensile properties and fatigue behavior of sand-cast Mg–Gd–Y–Zr alloy. Mater. Sci. Eng., A 612, 293 (2014).Google Scholar
Li, Z.M., Wang, Q.G., Luo, A.A., Zhang, P., and Peng, L.M.: Size effect on magnesium alloy castings. Metall. Mater. Trans. A 47A, 2686 (2016).Google Scholar
Li, Z.M., Luo, A.A., Wang, Q.G., Peng, L.M., Fu, P.H., and Wu, G.H.: Effects of grain size and heat treatment on the tensile properties of Mg–3Nd–0.2Zn magnesium alloys. Mater. Sci. Eng., A 564, 450 (2013).Google Scholar
Chang, J.W., Guo, X.W., Fu, P.H., Peng, L.M., and Ding, W.J.: Effect of heat treatment on corrosion and electrochemical behavior of Mg–3Nd–0.2Zn–0.4Zr (wt%) alloy. Electrochim. Acta 52, 3160 (2007).Google Scholar
Li, Z.M., Wang, Q.G., Luo, A.A., Peng, L.M., Fu, P.H., and Wang, Y.X.: Improved high cycle fatigue properties of a new magnesium alloy. Mater. Sci. Eng., A 582, 170 (2013).Google Scholar
Wang, Q.G. and Jones, P.: Fatigue life prediction in aluminum shape castings. SAE Int. J. Mater. Manuf. 4, 289 (2011).CrossRefGoogle Scholar
Yu, Q., Zhang, J.X., Jiang, Y.Y., and Li, Q.Z.: An experimental study on cyclic deformation and fatigue of extruded ZK60 magnesium alloy. Int. J. Fatigue 36, 47 (2012).Google Scholar
Park, S.H., Hong, S.G., Lee, B.H., Bang, W., and Lee, C.S.: Low-cycle fatigue characteristics of rolled Mg–3Al–1Zn alloy. Int. J. Fatigue 32, 1835 (2010).Google Scholar
Peng, L.M., Fu, P.H., Li, Z.M., Yue, H.Y., Li, D.Y., and Wang, Y.X.: High cycle fatigue behaviors of low pressure cast Mg–3Nd–0.2Zn–2Zr alloys. Mater. Sci. Eng., A 611, 170 (2014).Google Scholar
Lv, F., Yang, F., Li, S.X., and Zhang, Z.F.: Effects of hysteresis energy and mean stress on low-cycle fatigue behaviors of an extruded magnesium alloy. Scr. Mater. 65, 53 (2011).Google Scholar
Ellyin, F. and Kujawski, D.: Multiaxial fatigue criterion including mean-stress effect. ASTM STP 1191, 55 (1993).Google Scholar
Fu, P.H., Peng, L.M., Jiang, H.Y., Chang, J.W., and Zhai, C.Q.: Effects of heat treatments on the microstructures and mechanical properties of Mg–3Nd–0.2Zn–0.4Zr (wt%) alloy. Mater. Sci. Eng., A 486, 183 (2008).Google Scholar
Wang, Q.G., Apelian, D., and Lados, D.A.: Fatigue behavior of A356/357 aluminum cast alloys. Part II—effect of microstructural constituents. J. Light. Met. 1, 85 (2001).Google Scholar
Salem, A.A., Kalidindi, S.R., Doherty, R.D., and Semiatin, S.L.: Strain hardening due to deformation twinning in α-titanium mechanisms. Metall. Mater. Trans. A 37A, 259 (2006).Google Scholar
Wu, Y.J., Zhu, R., Wang, J.T., and Ji, W.Q.: Role of twinning and slip in cyclic deformation of extruded Mg–3% Al–1% Zn alloys. Scr. Mater. 63, 1077 (2010).Google Scholar
Xu, S., Gertsman, V.Y., Li, J., Thompson, J.P., and Sahoo, M.: Role of mechanical twinning in tensile compressive yield asymmetry of die cast mg alloy. Can. Metall. Q. 44, 155 (2005).Google Scholar
Yu, Q., Zhang, J.X., Jiang, Y.Y., and Li, Q.Z.: Effect of strain ratio on cyclic deformation and fatigue of extruded AZ61A magnesium alloy. Int. J. Fatigue 44, 225 (2012).Google Scholar
Peng, L.M., Fu, P.H., Li, Z.M., Wang, Y.X., and Jiang, H.Y.: High cycle fatigue properties of cast Mg–xNd–0.2Zn–Zr alloys. J. Mater. Sci. 49, 7105 (2014).CrossRefGoogle Scholar
Yue, H.Y., Fu, P.H., Peng, L.M., Li, Z.M., Pan, J.P., and Ding, W.J.: Damage morphology study of high cycle fatigued as-cast Mg–3.0Nd–0.2Zn–Zr (wt%) alloy. Mater. Charact. 111, 93 (2016).Google Scholar
Wang, Y.N. and Huang, J.C.: The role of twinning and untwining in yield behavior in hot-extruded Mg–Al–Zn alloy. Acta Mater. 55, 897 (2007).Google Scholar
Xu, D.K., Liu, L., Xu, Y.B., and Han, E.H.: The crack initiation mechanism of the forged Mg–Zn–Y–Zr alloy in the super-long fatigue life regime. Scr. Mater. 56, 1 (2007).CrossRefGoogle Scholar