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Acta Metall Sin  2016, Vol. 52 Issue (9): 1115-1122    DOI: 10.11900/0412.1961.2016.00048
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Feng WANG(),Dezhi MA,Zhi WANG,Pingli MAO,Zheng LIU
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
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As the lightest metallic structural material, magnesium alloys were widely used in automotive, aerospace, electronic equipment and other fields. Among commercial magnesium alloys, AM series were commonly used due to excellent ductility and energy absorption. However, their relatively poor strength greatly restricted their extended use. In order to improve mechanical properties of AM50 alloy, the Zn and Y elements were added into the AM50 alloy in the form of atomic ratio of 6∶1 by the permanent mold casting. The microstructure, solidification behavior and mechanical properties of AM50-x(Zn, Y) (x=0, 2, 3, 4, 5, mass fraction, %) alloys were investigated by OM, SEM, EDS, XRD, thermal analysis and tensile tests. The results indicated that addition of Zn and Y elements with an atomic ratio of 6∶1 to AM50 alloy, the microstructures were obviously refined, and the quasicrystal I-phase(Mg3Zn6Y) cannot form. In addition, the granular Al6YMn6 phase and fine Al2Y phase were formed in the microstructure, and the size of Al6YMn6 phase increased with increasing the Zn and Y content. The Φ-Mg21(Zn, Al)17 phase with lamellar structure was formed around β phase when x≥3, and its amount increased with increasing the Zn and Y addition. Thermal analysis results show that the Φ-Mg21(Zn, Al)17 phase was formed at 354 ℃ by the peritectic reaction, in which the precipitation temperatures of α-Mg and β phase were decreased with the increase of x content. Due to the formation of Al6YMn6, Al2Y and Φ-Mg21(Zn, Al)17 phases, the size and amount of the β phase was decreased. For AM50-4(Zn, Y) alloy, the microstructure was greatly refined, and the ultimate tensile strength, yield strength and elongation of the alloy reached to the maximum, 206.63 MPa, 92.50 MPa and 10.04%, respectively.

Key words:  magnesium alloy      AM50      microstructure      thermal analysis      mechanical property     
Received:  29 January 2016     
Fund: Supported by National Natural Science Foundation of China (No.51504153), Natural Science Foundation of Liaoning Province (No.201602548) and Program for Liaoning Innovative Research Team in University (No.LT2013004)

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Alloy Al Mn Zn Y Mg
AM50-0(Zn, Y) 5.05 0.28 0.18 - Bal.
AM50-2(Zn, Y) 5.09 0.27 1.71 0.32 Bal.
AM50-3(Zn, Y) 4.95 0.26 2.53 0.52 Bal.
AM50-4(Zn, Y) 4.98 0.28 3.36 0.73 Bal.
AM50-5(Zn, Y) 4.92 0.29 4.23 0.90 Bal.
Table1  Chemical compositions of the alloys (mass fraction / %)
Fig.1  Microstructures of as-cast AM50-x(Zn, Y) alloys
(a) x=0 (b) x=2 (c) x=3 (d) x=4 (e) x=5
Fig.2  SEM images (a~e) and XRD spectra (f) of as-cast AM50-x(Zn, Y) alloys with x=0 (a), x=2 (b), x=3 (c), x=4 (d) and x=5 (e)
Fig.3  SEM image of as-cast AM50 alloy (a), and EDS analyses of β-Mg17Al12 (b) and Al8Mn5 (c)
Fig.4  SEM images of as-cast AM50-4(Zn, Y) alloy (a, b), and EDS analyses of β-Mg17(Zn, Al)12 (c), Φ-Mg21(Zn, Al)17 (d) and Al6YMn6 (e)
Fig.5  SEM image of as-cast AM50-4(Zn, Y) alloy (a), and area scan maps of elements Mg (b), Al (c), Zn (d), Y (e) and Mn (f)
Fig.6  Thermal analysis results of as-cast AM50-x(Zn, Y) alloys (T—temperature, t—time)
(a) x=0 (b) x=2 (c) x=3 (d) x=4 (e) x=5
Fig.2  Critical temperatures obtained from the thermal analysis curves (Fig.6)
Fig.7  Tensile properties of as-cast AM50-x(Zn, Y) alloys at room temperature (σb—ultimate tensile strength, σ0.2—yield strength, δ—Elongation)
[1] Agnew S R, Nie J F.Scr Mater, 2010; 63: 671
[2] Easton M, Beer A, Barnett M, Davies C, Dunlop G, Durandet Y, Blacket S, Hilditch T, Beggs P.JOM, 2008; 60(11): 57
[3] Fechner D, Hort N, Blawert C, Dieringa H, St?rmer M, Kainer K U. J Mater Sci, 2012; 47: 5461
[4] Kondori B, Mahmudi R.Mater Sci Eng, 2010; A527: 2014
[5] ünal M.Int J Cast Met Res, 2014; 27(2): 80
[6] Wang Q D, Lin J B, Liu M P, Ding W J.Int J Mater Res, 2008; 99: 761
[7] Wang J L, Yang J, Wu Y M, Zhang H J, Wang L M.Mater Sci Eng, 2008; A472: 332
[8] Singh L K, Srinivasan A, Pillai U T S, Joseph M A, Pai B C.Trans Ind Inst Met, 2015; 68: 331
[9] Kim J M, Park B K, Jun J H, Shin K, Kim K T, Jung W J. Mater Sci Eng, 2007; A449-451: 326
[10] Zhang J S, Pei L X, Du H W, Liang W, Xu C X, Lu B F.J Alloys Compd, 2008; 453: 309
[11] Bae D H, Lee M H, Kim K T, Kim W T, Kim D H.J Alloys Compd, 2002; 342: 445
[12] Zhang J S, Zhang Y Q, Zhang Y, Xu C X, Wang X M, Yan J.Trans Nonferrous Met Soc China, 2010; 20: 1199
[13] Teng X Y, Liu T, Zhou G R, Liu L Y. Adv Mater Res, 2011; 306-307: 582
[14] Wang X D, Du W B, Wang Z H, Liu K, Li S B.Mater Sci Eng, 2011; A530: 446
[15] Wang R M, Eliezer A, Gutman E M.Mater Sci Eng, 2003; A355: 201
[16] Zhang Z, Couture A, Luo A.Scr Mater, 1998; 39: 45
[17] Ohno M, Mirkovic D, Schmid-Fetzer R.Mater Sci Eng, 2006; A421: 328
[18] Wang J L, Peng Q M, Wu Y M, Wang L M.Trans Nonferrous Met Soc China, 2006; 16(s1): 703
[19] Zheng W C, Li S S, Tang B, Zeng D B.Acta Metall Sin, 2006; 42: 835
[19] (郑伟超, 李双寿, 汤彬, 曾大本. 金属学报, 2006; 42: 835)
[20] Pettersen G, Westengen H, H?ier R, Lohne O.Mater Sci Eng, 1996; A207: 115
[21] Wu G H, Fan Y, Zhai C Q, Ding W J.Acta Metall Sin, 2008; 44: 1247
[21] (吴国华, 樊昱, 翟春泉, 丁文江. 金属学报, 2008; 44: 1247)
[22] Wang J, Zhu X R, Xu Y D, Wang R, Nie J J, Zhang L J.Chin J Nonferrous Met, 2014; 24: 25
[22] (王军, 朱秀荣, 徐永东, 王荣, 聂景江, 张立君. 中国有色金属学报, 2014; 24: 25)
[23] Ohno M, Mirkovic D, Schmid-Fetzer R.Acta Mater, 2006; 54: 3883
[24] Wang Y S, Wang Q D, Ma C J, Ding W J, Zhu Y P.Mater Sci Eng, 2003; A342: 178
[25] Lü Y Z, Wang Q D, Ding W J, Zeng X Q, Zhu Y P.Mater Lett, 2000; 44(5): 265
[26] Maxwell I, Hellawell A.Acta Metall, 1975; 23: 229
[27] Becerra A, Pekguleryuz M.J Mater Res, 2009; 24: 1722
[28] Hou D H, Liang S M, Chen R S, Dong C.Acta Metall Sin, 2014; 50: 601
[28] (侯丹辉, 梁松茂, 陈荣石, 董闯. 金属学报, 2014; 50: 601)
[29] Zhao Z D, Chen Q, Wang Y B, Shu D Y. Mater Sci Eng, 2009; A515: 152
[30] Yuan W, Panigrahi S K, Su J Q, Mishra R S.Scr Mater, 2011; 65: 994
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