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Study on Microstructure and Mechanical Properties of AZ80 Magnesium alloy by Cyclic Expansion-extrusion processing
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college of Materials Science and Engineering,North university of China,College of Mechanical and electrical engineering,North university of China,college of Materials Science and Engineering,North university of China,College of Mechanical and electrical engineering,North university of China,college of Materials Science and Engineering,North university of China

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    Abstract:

    In this paper,the AZ80 magnesium alloy billets of size of 100mm×50mm×170mm was extruded by CEEOP.The effect of 1~4 pass deformation of CEEOP to the equivalent strain、 microstructure and mechanical properties of AZ80 magnesium alloy through simulation、OM、tensile test and hardness test.The results show that with the increasing of CEEOP pass,the grain size was more small and uniform;the grain size could be defined from 200μm to 6μm after one-pass;after four-pass, the size of equal-axial grain was reduced to approximately 1.5μm and the distribution was uniform,furthermore,the mechanism of grain refinement is mechanical fragmentation and dynamic recrystallization;the grain refinement effect was not obvious after two-pass.The mechanical properties have been greatly improved compared with the annealed alloy. One-pass deformation of CEEOP can significantly improve the hardness of annealed alloy from 61.5HB to 83.07HB.Similarly,four-pass deformaion can also obviously improve that from 61.5HB to 86.27HB.The ultimate tensile strength and yield strength via one-pass can improve from 230.9MPa ,115MPa to 262.7MPa ,155MPa ,respectively.And after four-pass,they would increas to 294MPa ,170MPa,respectively. Compared with the microstructure and mechanical properties of ECAP,at the same deformation temperature and strain accumulation,CEEOP can better refine grain and improve the tensile strength and yield strength of the material.

    Reference
    [1] Huang haijun(黄海军), Hai qiuhua(韩秋华), Wang ruiquan(王瑞权)et al.China Foundry Machinery Technology(中国铸造装备与技术)[J], 2010, (01):1
    [2] Du wenbo(杜文博), Qing yalin(秦亚玲), Yan zhengjie(严振杰)et al. Rare Metal Materials and Engineering(稀有金属材料与工程)[J], 2009,(10):1870
    [3] Swaminathan S, Shankar MR, Rao BC, Compton WD, Chandrasekar S, King AH, Trumble KP. journal of materials science[J]. 2007, 42:529
    [4] Lu jun(路君), Zeng xiaoqin(曾小勤), Yu wenjiang(于文江)et al. FoundryEngineering(铸造工程)[J], 2008, 38(1):32
    [5] Chen yunjun(陈勇军), Wang qudong(王渠东), Peng jianguo(彭建国)et al.大塑性变形制备细晶材料的研究、开发与展望.Materials Review(材料导报)[J], 2005, 19(4): 70
    [6]N.Pardis,C.Chen,R.Ebrahimi,L.S.Toth,C.F.Gu,B.Beausir,L.Kommel. Materials Science and Engineering A[J], 2015,628: 423–432.
    [7] A.Babaei.M.M.Mashhadi.H.Jafarzadeh. Materials Science and Engineering[J], 2014, 49:3158
    [8] Y.Xue(薛勇), Z.M.Zhang(张治民), Y.J.Wu(吴耀金)et al.Science of Sintering[J], 2013,45(2):199
    [9] N.Pardis,B.Talebanpour,R.Ebrahimi,S.Zomorodian.A. Materials Science and Engineering A[J], 2011,528:7537
    [10] F.Rahimi,A.R.Eivani,M.Kiani. Materials Science and Engineering A[J], 2015, 83:144
    [11] Cai J, Li F G, Liu T Y, et al. Materials and Design[J], 2011, 32: 1144
    [12] Jia lili(贾俐俐).China Machine PRESS(挤压工艺及模具)[M], 北京:机械工业出版社, 2004, 105
    [13] Pardis N, Ebrahimi R . Materials Science and Engineering [J], 2009, 527: 355–360
    [14] Xu shubo(徐淑波), Zhang guoliang(张国良), Ren guocheng(任国成)et al. The Chinese Journal of Nonferrous Metals (中国有色金属学报)[J], 2007, 12(17): 1928
    [15] Li jizhon(李继忠), Zhang nianxian(张念先), Ding hua(丁桦)et al. Journal of Plasticity Engineering(塑性工程学报)[J], 2011, 18(3): 20
    [16] Shi Lei(石磊), Yang He(杨合), Guo Lianggang(郭良刚)et al. Rare Metal Materials and Engineering (稀有金属材料与工程)[J], 2012, 41(11): 1955
    [17] Mathis K, Gubicza J, Nam NH. Journal of Alloys and Compounds [J], 2005, 394: 194
    [18] Muralidhar Avvari S Narendranath. Materials Science and Engineering A[J], 2015, 83: 144.
    [19] Liu chuming(刘楚明), Liu zijuan(刘子娟), Zhu xiurong(朱秀荣)et al. The Chinese Journal of Nonferrous Metals(中国有色金属学报)[J], 2006, 16(1):1
    [20] Weng likui(翁立奎). Thesis of master[D], 2006
    [21] Liu bing(周斌), Sun long(孙龙), Wang hongxia(王红霞)et al. Hot Working Technology (热加工工艺)[J], 2015, 44(7): 24
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[Yong Xue, Zhihui Yang, Zhimin Zhang, Yaojin Wu, Hong Li. Study on Microstructure and Mechanical Properties of AZ80 Magnesium alloy by Cyclic Expansion-extrusion processing[J]. Rare Metal Materials and Engineering,2017,46(7):1983~1988.]
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History
  • Received:October 12,2016
  • Revised:January 04,2017
  • Adopted:January 06,2017
  • Online: November 14,2017