Acta Metallurgica Sinica (English Letters) >
Microstructure in the Semi-solid State and Mechanical Properties of AZ80 Magnesium Alloy Reheated from the As-cast and Extruded States
Received date: 2012-10-17
Revised date: 2013-03-05
Online published: 2013-07-11
Supported by
Department of Education of Heilongjiang Province (No. 12511069), Heilongjiang Province Natural Science Foundation (No. QC2010110), Special Fund Project for Scientific and Technological Innovation Talents of Harbin (No. 2012RFQXS113) and Entrepreneurship for Under-graduates (No. 201210214008).
The multi-axial forging (MAF) process was introduced into the strain induced metal activation (SIMA) process to replace conventional forging. Microstructure evolution of MAF formed AZ80 magnesium alloy during partial remelting was investigated. Furthermore, the tensile mechanical properties for AZ80 magnesium alloy thixoextruded from the starting materials treated by MAF were determined. For comparison, as-cast AZ80 magnesium alloy was also thixoextruded. The results show that the SIMA route produced ideal, fine semi-solid microstructure, in which almost completely spheroidal primary solid grains had a little amount of entrapped liquid. The microstructure of the as-cast alloy in the semi-solid state is less spheroidized compared with the MAF alloy under the similar isothermal holding conditions. With prolonged holding time, the size of the solid grain increases and the degree of spheroidization is improved in the MAF formed alloys. However, the solid grain size of the as-cast alloys decreases initially, and then increases with further increasing temperature. The tensile mechanical properties for AZ80 magnesium alloy thixoextruded from the starting material produced by MAF are better than those of AZ80 magnesium alloy thixoextruded from the starting material produced by casting. The ultimate tensile strength, yield strength and elongation of the alloy thixoextruded from the starting material produced by MAF are 314 MPa, 238 MPa and 14%, respectively.
Key words： Magnesium alloy; Microstructure; Mechanical properties; Partial remelting
Wenyong JIANG , Tian CHEN , Liping WANG , Yicheng FENG , Yan ZHU , Kaifeng WANG , Jiapeng LUO , Shouwei ZHANG . Microstructure in the Semi-solid State and Mechanical Properties of AZ80 Magnesium Alloy Reheated from the As-cast and Extruded States[J]. Acta Metallurgica Sinica (English Letters), 2013 , 26(4) : 473 -482 . DOI: 10.1007/s40195-012-0176-3
[1]S.J. Luo, Q. Chen and Z.D. Zhao, Mater. Sci. Eng. A 50(2009)146.
[2]Q. Chen, Z.W. Huang, Z.D. Zhao and C.K. Hu, Compos.Mater. Sci.67(2013)196.
[3]B.G. Yuan, C.F. Li, H.P. Yu and D.L. Sun, Trans.Nonferrous Met. Soc. China19(2009) s423.
[4]Z.D. Zhao, Q. Chen, F. Kang and D.Y. Shu, J. Alloys Compd.482(2009)455.
[5]Y. Hu, B.L. He and H. Yan, Trans. Nonferrous Met. Soc.ChinaS3(2010)s883.
[6]B.G. Yuan, C.F. Li, H.P. Yu and D.L. Sun, Mater. Sci.Eng. A527(2010)4185.
[7]Z.D. Zhao, Q. Chen, Y.B. Wang and D.Y. Shu, Mater. Sci.Eng. A515(2009)152.
[8]Y. Birol, J. Alloys Compd.461(2008) 132.
[9]Q. Chen, Z.X. Zhao, D.Y. Shu and Z.D. Zhao, Mater. Sci.Eng. A528(2011)3930.
[10]H.V. Atkinson, Prog. Mater. Sci.50(3)(2005)346.
[11]Z.D. Zhao, Q. Chen, Z.J. Tang and C.K. Hu, J. Alloys Compd.497(2010)402.
[12]Q. Chen, B.G. Yuan, G.Z. Zhao, D.Y. Shu, C.K. Hu, Z.D.Zhao and Z.X. Zhao, Mater. Sci. Eng. A537(2012)25.
[13]G.H. Su, Z.Y. Cao, Y.B. Liu, Y.H. Wang, L. Zhang and
L.R. Cheng, Trans. Nonferrous Met. Soc. ChinaS2(2010)S402.
[14]S.J. Luo, Q. Chen and Z.D. Zhao, J. Alloys Compd. 477(2009)602.
[15]Q. Chen, Z.D. Zhao, Z.X. Zhao, C.K. Hu and D.Y. Shu, J.Alloys Compd.509 (2011)7303.
[16]Z.D. Zhao, Q. Chen, H.Y. Chao and S.H. Huang, Mater. Des.31(2010)1906.
[17]L. Zhang, Z.Y. Cao and Y.B. Liu, Trans. Nonferrous Met.Soc. China20(2010) 1244.
[18]X.M. Feng and T.T. Ai, Trans. Nonferrous Met. Soc.China19(2009) 293.
[19]L. Geng, H.W. Zhang, H.Z. Li, L.N. Guan and L.J. Huang,Trans. Nonferrous Met. Soc. China10(2010) 1851.
[20]Q. Chen, D.Y. Shu, C.K. Hu, Z.D. Zhao and B.G. Yuan,Mater. Sci. Eng. A541(2012) 98.
[21]G.H. Su, Z.Y. Cao, Y.B. Liu, Y.H. Wang, L. Zhang and L.R.Cheng, Trans. Nonferrous Met. Soc. China20(2010) S402.
[22]Z.D. Zhao, Q. Chen, S.H. Huang, F. Kang and Y.B. Wang,Trans. Nonferrous Met. Soc. China20(2010) 1630.
[23]X.H. Du and E.L. Zhang, Mater. Lett.61(2007)2333.
[24]M.J. Nayyeri and F. Khomamizadeh, J. Alloys Compd. 509(2011) 1567.
[25]Q. Chen, S.J. Luo and Z.D. Zhao, J. Alloys Compd. 477(2009) 726.
[26]Z.D. Zhao, Q. Chen, Z.J. Tang, Y.B. Wang and H.Q. Ning,J. Mater. Sci.45(2010) 3419.
[27]Y.S. Cheng, Q. Chen, Z.Q. Huang and S.H. Huang, Trans. Nonferrous Met. Soc. China20(2010) S739.
[28]M.Y. Zheng, K. Wu, M. Liang, S. Kamado and Y. Kojima,Mater. Sci. Eng. A372(2004) 66.
[29]Z.D. Zhao, Q. Chen, C.K. Hu, S.H. Huang and Y.Q. Wang,J. Alloys Compd.485(2009) 627.
[30]F. Czerwinski, Scr. Mater.48(2003) 327.
[31]Q. Chen, D.Y. Shu, Z.D. Zhao, Z.X. Zhao, Y.B. Wang and B.G. Yuan, Mater. Des.40(2012) 488.
[32]Z.D. Zhao, Q. Chen, Y.B. Wang and D.Y. Shu, Trans.Nonferrous Met. Soc. China19(2009) 535.
[33]J.G. Wang, P. Lu, H.Y. Wang, J.F. Liu and Q.C. Jiang,J. Alloys Compd.395(2005) 108.
[34]Z.D. Zhao, Q. Chen, C.K. Hu and D.Y. Shu, Mater. Des. 30(2009) 4557.
[35]Z.D. Zhao, Q. Chen, Y.B. Wang and D.Y. Shu, Mater. Sci.Eng. A506(2009) 8.
[36]H.V. Atkinson and D. Liu, Mater. Sci. Eng. A496 (2008) 439.
[37]Z.D. Zhao, Y.S. Cheng, Q. Chen, Y.B. Wang and D.Y. Shu,Trans. Nonferrous Met. Soc. China20(2010) 178.
[38]R.G. Guan, Z.Y. Zhao, X.P. Sun, H.Q. Huang, C.G. Dai and Q.S. Zhang, Trans. Nonferrous Met. Soc. China20(2010) 729.
[39]Q. Chen, J. Lin, D.Y. Shu, C.K. Hu, Z.D. Zhao, F. Kang,S.H. Huang and B.G. Yuan, Mater. Sci. Eng. A554(2012) 129.
[40]Z.D. Zhao, Q. Chen, H.Y. Chao, C.K. Hu and S.H. Huang,Mater. Des.32(2011) 575.
[41]E. Tzimas and A. Zavaliangos, Mater. Sci. Eng. A 289(2000) 228.
[42]R.G. Guan, J.L. Wen, X.H. Liu and X.Y. Meng, Rare Met. 21(2002) 27.
[43]Z.D. Zhao, Q. Chen, L. Yang, D.Y. Shu and Z.X. Zhao,Trans. Nonferrous Met. Soc. China21(2011) 265.
[44]S.R. Yu, D.C. Li and N. Kim, Mater. Sci. Eng. A420 (2006) 165.
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