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Effect of Mn addition on microstructure and mechanical properties of cast Al–2Li–2Cu–0.8Mg–0.4Zn–0.2Zr alloy

Published online by Cambridge University Press:  25 January 2016

Antao Chen ,
Liang Zhang ,
Guohua Wu ,
Yu Peng  and
Yanlei Li
Antao Chen
Affiliation:
National Engineering Research Center of Light Alloys Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Liang Zhang*
Affiliation:
National Engineering Research Center of Light Alloys Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Guohua Wu*
Affiliation:
National Engineering Research Center of Light Alloys Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Yu Peng
Affiliation:
National Engineering Research Center of Light Alloys Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Yanlei Li*
Affiliation:
National Engineering Research Center of Light Alloys 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: liangzhang08@sjtu.edu.cn
b) e-mail: ghwu@sjtu.edu.cn
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Abstract

The effect of 0.5 wt% Mn addition on the microstructure and mechanical properties of cast Al–2Li–2Cu–0.8Mg–0.4Zn–0.2Zr (wt%) alloy was investigated. Results showed that the grain size of Mn-containing alloy was smaller than that of Mn-free alloy in both the as-cast and solution treated state. Al20Mn3Cu2 dispersoids were formed during solution treatment in the Mn-containing alloy. After aging at 175 °C for 32 h, a large volume fraction of coherent Al3Li/Al3(Li, Zr) particles were precipitated in both Mn-free and Mn-containing alloys, while more Guinier–Preston–Bagaratsky zones were observed in the Mn-free alloy. Mn addition improved the elongation significantly, which was 1.7% for Mn-free alloy and 3.3% for the alloy with 0.5 wt% Mn addition.

Keywords

cast Al alloygrain sizeAl20Mn3Cu2GPB zoneselongation

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Articles
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Journal of Materials Research , Volume 31 , Issue 2 , 28 January 2016 , pp. 250 - 258
Copyright
Copyright © Materials Research Society 2016 

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References

REFERENCES

Lavernia, E.J., Srivatsan, T.S., and Mohamed, F.A.: Strength, deformation, fracture behaviour and ductility of aluminium-lithium alloys. J. Mater. Sci. 25, 1137–1158 (1990).Google Scholar
Rajendran, V., Muthu Kumaran, S., Jayakumar, T., and Palanichamy, P.: Microstructure and ultrasonic behaviour on thermal heat-treated Al–Li 8090 alloy. J. Alloys Compd. 478, 147–153 (2009).CrossRefGoogle Scholar
Dursun, T. and Soutis, C.: Recent developments in advanced aircraft aluminium alloys. Mater. Des. 56, 862–871 (2014).Google Scholar
Gupta, R.K., Nayan, N., Nagasireesha, G., and Sharma, S.C.: Development and characterization of Al–Li alloys. Mater. Sci. Eng., A 420, 228–234 (2006).Google Scholar
Drits, M.E., Kadaner, E.S., Turkina, N.I., and Fedotov, S.G.: The mechanical properties of aluminum-lithium alloy. Splavy Tsvetn. Met. 14, 356–359 (1972).Google Scholar
Kim, J.M., Seong, K.D., Jun, J.H., Shin, K., Kim, K.T., and Jung, W.J.: Microstructural characteristics and mechanical properties of Al–2.5wt.%Li–1.2wt.% Cu–xMg alloys. J. Alloys. Compd. 434, 324–326 (2007).Google Scholar
Hirosawa, S., Sato, T., and Kamio, A.: Effects of Mg addition on the kinetics of low-temperature precipitation in Al–Li–Cu–Ag–Zr alloys. Mater. Sci. Eng., A 242, 195–201 (1998).Google Scholar
Gable, B.M., Pana, M.A., Shiflet, G.J., and Starke, E.A.: The role of trace additions on the T1 coarsening behavior in Al-Li-Cu-X alloys. Mater. Sci. Forum. 396, 699–704 (2002).Google Scholar
Couture, A.: Iron in aluminum casting alloys. AFS Int. Cast Met. J. 6, 9–17 (1981).Google Scholar
Karlík, M., Mánik, T., and Lauschmann, H.: Influence of Si and Fe on the distribution of intermetallic compounds in twin-roll cast Al–Mn–Zr alloys. J. Alloys. Compd. 515, 108–113 (2012).Google Scholar
Tseng, C.J., Lee, S.L., Tsai, S.C., and Cheng, C.J.: Effects of manganese on microstructure and mechanical properties of A206 alloys containing iron. J. Mater. Res. 17, 2243–2250 (2002).CrossRefGoogle Scholar
Meng, L. and Zheng, X.L.: Overview of the effects of impurities and rare earth elements in Al− Li alloys. Mater. Sci. Eng., A 237, 109–118 (1997).Google Scholar
Meng, L. and Tian, L.: Stress concentration sensitivity of Al–Li based alloys with various contents of impurities and cerium addition. Mater. Sci. Eng., A 323, 239–245 (2002).Google Scholar
Belov, N.A., Eskin, D.G., and Aksenov, A.A.: Multicomponent Phase Diagrams: Applications for Commercial Aluminum Alloys (Elsevier, Oxford, 2005); pp. 268–281.Google Scholar
Zhang, W.W., Lin, B., Zhang, D.T., and Li, Y.Y.: Microstructures and mechanical properties of squeeze cast Al–5.0Cu–0.6Mn alloys with different Fe content. Mater. Des. 52, 225–233 (2013).Google Scholar
Chen, Z.G. and Zheng, Z.Q.: Microstructural evolution and ageing behaviour of the low Cu: Mg ratio Al–Cu–Mg alloys containing scandium and lithium. Scr. Mater. 50, 1067–1071 (2004).Google Scholar
Gayle, F.W. and Vander Sande, J.B.: “Composite” precipitates in an Al-Li-Zr alloy. Scr. Metall. 18, 473–478 (1984).Google Scholar
Shuncai, W., Li, C.Z., and Yan, M.G.: Determination of structure of Al20Cu2Mn3 phase in Al-Cu-Mn alloys. Mater. Res. Bull. 24, 1267–1270 (1989).Google Scholar
Lihl, F. and Sagoschen, J.: Grain refinement of aluminum with titanium and carbon. Metall. 11, 179–189 (1957).Google Scholar
Bowen, H.G. and Bernstein, H.: Effect of 16 alloying elements upon the grain size of cast 4.5-percent copper-aluminum alloy. Trans. Am. Soc. Met. 40, 209–222 (1948).Google Scholar
Mondolfo, L.F.: Aluminum Alloys: Structure and Properties (Butterworths, London, 1976).Google Scholar
Wolverton, C.: Solute–vacancy binding in aluminum. Acta Mater. 55, 5867–5872 (2007).Google Scholar
Williams, D.B. and Edington, J.W.: The precipitation of δ′ (Al3Li) in dilute aluminium–lithium alloys. Met. Sci. 9, 529–532 (1975).Google Scholar
Flower, H.M. and Gregson, P.J.: Solid state phase transformations in aluminum alloys containing lithium. Mater. Sci. Technol. 3, 81–90 (1987).Google Scholar
Niessen, A.K., De Boer, F.R., Boom, R., De Chatel, P.F., Mattens, W.C.M., and Miedema, A.R.: Model predictions for the enthalpy of formation of transition metal alloys II. Calphad 7, 51–70 (1983).Google Scholar
Huang, B.P. and Zheng, Z.Q.: Independent and combined roles of trace Mg and Ag additions in properties precipitation process and precipitation kinetics of Al–Cu–Li–(Mg)–(Ag)–Zr–Ti alloys. Acta Mater. 46, 4381–4393 (1998).CrossRefGoogle Scholar
Ringer, S.P., Hono, K., Polmear, I.J., and Sakurai, T.: Nucleation of precipitates in aged Al-Cu-Mg-(Ag) alloys with high Cu: Mg ratios. Acta Mater. 44, 1883–1898 (1996).Google Scholar
Decreus, B., Deschamps, A., De Geuser, F., Donnadieu, P., Sigli, C., and Weyland, M.: The influence of Cu/Li ratio on precipitation in Al–Cu–Li–x alloys. Acta Mater. 61, 2207–2218 (2013).Google Scholar
Cassada, W.A., Shiflet, G.J., and Starke, E.A.: Mechanism of Al2CuLi (T1) nucleation and growth. Metall. Trans. A 22, 287–297 (1991).Google Scholar
Thompson, G.E. and Noble, B.: Precipitation characteristics of aluminum-lithium alloys containing magnesium. J. Inst. Met. 101, 111–115 (1973).Google Scholar
Wang, S.C., Starink, M.J., and Gao, N.: Precipitation hardening in Al–Cu–Mg alloys revisited. Scr. Mater. 54, 287–291 (2006).Google Scholar
Silcock, J.M.: The structural ageing characteristics of Al-Cu-Mg alloys with copper-magnesium weight ratios of 7-1 and 2.2-1. J. Inst. Met. 89, 203–210 (1961).Google Scholar
Tseng, C.J., Lee, S.L., Wu, T.F., and Lin, J.C.: Effects of Fe content on microstructure and mechanical properties of A206 alloy. Mater. Trans. 41, 708–713 (2000).Google Scholar
Starke, E.A. and Lin, F.S.: The influence of grain structure on the ductility of the Al-Cu-Li-Mn-Cd alloy 2020. Metall. Trans. A 13, 2259–2269 (1982).Google Scholar
Walsh, J.A., Jata, K.V., and Starke, E.A.: The influence of Mn dispersoid content and stress state on ductile fracture of 2134 type Al alloys. Acta Metall. Mater. 37, 2861–2871 (1989).Google Scholar