Achieving Superplasticity in AZ31 Magnesium Alloy Processed by Hot Extrusion and Rolling

详细信息    查看全文

• 作者：Xin Wang ; Mengling Wu ; Wenliang Ma ; Yi Lu…
• 关键词：AZ31 magnesium alloy ; extrusion and rolling ; superplasticity ; ultrafine ; grained size
• 刊名：Journal of Materials Engineering and Performance
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：25
• 期：1
• 页码：64-67
• 全文大小：815 KB
• 参考文献：1.B. Zhang, H. Liao, and C. Coddet, Effects of Processing Parameters on Properties of Selective Laser Melting Mg–9% Al Powder Mixture, Mater. Des., 2012, 34, p 753–758CrossRef
  2.D. Sun, C. Chang, and P. Kao, Microstructural Study of Strain Localization in Hot Compressed Mg-3Al-1Zn Alloy, Mater. Sci. Eng., A, 2010, 526, p 7050–7056CrossRef
  3.Q. Miao, L. Hu, X. Wang, and E. Wang, Grain growth Kinetics of a Fine-Grained AZ31 Magnesium Alloy Produced by Hot Rolling, J. Alloy. Compd., 2010, 493, p 87–90CrossRef
  4.R. Panicker, A. Chokshi, R. Mishra, R. Verma, and P. Krajewski, Microstructural Evolution and Grain Boundary Sliding in a Superplastic Magnesium AZ31 Alloy, Acta Mater., 2009, 57, p 3683–3693CrossRef
  5.T.G. Langdon, The Mechanical Properties of Superplastic Materials, Metall. Mater. Trans. A, 1982, 13, p 689–701CrossRef
  6.L.C. Zhang, M. Calin, F. Paturaud, and J. Eckert, Deformation-Induced Grain Refinement in Body-Centered Cubic Co-Fe Alloys Upon Room Temperature compression, Mater. Sci. Eng., A, 2010, 527, p 5796–5800CrossRef
  7.L. Hu, Y. Wu, Y. Yuan, and H. Wang, Microstructure Nanocrystallization of a Mg-3 wt.% Al-1 wt.% Zn Alloy by Mechanically Assisted Hydriding-Dehydriding, Mater. Lett., 2008, 62, p 2984–2987CrossRef
  8.B. Tolaminejad and K. Dehghani, Microstructural Characterization and Mechanical Properties of Nanostructured AA1070 Aluminum After Equal Channel Angular Extrusion, Mater. Des., 2012, 34, p 285–292CrossRef
  9.H. Watanabe, T. Mukai, and K. Higashi, Superplasticity in a ZK60 Magnesium Alloy at Low Temperatures, Scr. Mater., 1999, 40, p 477–484CrossRef
  10.G. Sakai, Z. Horita, and T.G. Langdon, Grain Refinement and Superplasticity in an Aluminum Alloy Processed by High-Pressure Torsion, Mater. Sci. Eng., A, 2005, 393, p 344–351CrossRef
  11.S.H. Kang, Y.S. Lee, and J.H. Lee, Effect of Grain Refinement of Magnesium Alloy AZ31 by Severe Plastic Deformation on Material Characteristics, J. Mater. Process. Technol., 2008, 201, p 436–440CrossRef
  12.A. Yamashita, Z. Horita, and T.G. Langdon, Improving the Mechanical Properties of Magnesium and a Magnesium Alloy Through Severe Plastic Deformation, Mater. Sci. Eng., A, 2001, 300, p 142–147CrossRef
  13.M. Kai, Z. Horita, and T.G. Langdon, Developing Grain Refinement and Superplasticity in a Magnesium Alloy Processed by High-Pressure Torsion, Mater. Sci. Eng., A, 2008, 488, p 117–124CrossRef
  14.M. Mabuchi, T. Asahina, H. Iwasaki, and K. Higashi, Experimental Investigation of Superplastic Behaviour in Magnesium Alloys, Mater. Sci. Technol. Ser., 1997, 13, p 825–831CrossRef
  15.K. Kubota, M. Mabuchi, and K. Higashi, Review Processing and Mechanical Properties of Fine-Grained Magnesium Alloys, J. Mater. Sci., 1999, 34, p 2255–2262CrossRef
  16.T. Mukai, H. Watanabe, and K. Higashi, Application of Superplasticity in Commercial Magnesium Alloy for Fabrication of Structural Components, Mater. Sci. Technol., 2000, 16(11), p 1314–1319CrossRef
  17.Y.H. Wei, Q.D. Wang, Y.P. Zhu, H.T. Zhou, W.J. Ding, Y. Chino, and M. Mabuchi, Superplasticity and Grain Boundary Sliding in Rolled AZ91 Magnesium Alloy at High Strain Rates, Mater. Sci. Eng., A, 2003, 360, p 107–115CrossRef
  18.Hidetoshi Somekawa and Toshiji Mukai, Effect of Dominant Diffusion Process on Cavitation Behavior in Superplastic Mg–Al–Zn Alloy, Scr. Mater., 2007, 57, p 1008–1011CrossRef
  19.M. Mabuchi, K. Ameyama, H. Iwasaki, and K. Higashi, Low Temperature Superplasticity of AZ91 Magnesium Alloy with Non-equilibrium Grain Boundaries, Acta Mater., 1999, 47, p 2047–2057CrossRef
  20.T. McNelley, E. Lee, and M. Mills, Superplasticity in a Thermomechanically Processed High-Mg, Al-Mg Alloy, Metall. Mater. Trans. A, 1986, 17, p 1035–1041CrossRef
  21.R.Z. Valiev, N. Krasilnikov, and N. Tsenev, Plastic Deformation of Alloys with Submicron-Grained Structure, Mater. Sci. Eng., A, 1991, 137, p 35–40CrossRef
  
• 作者单位：Xin Wang (1) (2)
  Mengling Wu (1) (2)
  Wenliang Ma (2)
  Yi Lu (2)
  Shuai Yuan (2)
  
  1. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing, 211167, China
  2. School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing, 211167, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Characterization and Evaluation Materials
  Materials Science
  Tribology, Corrosion and Coatings
  Quality Control, Reliability, Safety and Risk
  Engineering Design
  
• 出版者：Springer New York
• ISSN：1544-1024

文摘

Experiments were conducted on ultrafine-grained AZ31 magnesium alloy sheet which was prepared through nano-grained powders processed by hot extrusion at 300 °C plus hot-rolling for four passes at 200. The superplastic behavior had been evaluated in a low-temperature range of 423-523 K and strain rates varied from 5 × 10−4 to 5 × 10−3 s−1. The experiment results showed that tensile testing revealed the superplastic elongations with a maximum measured elongation of 227% when tested at 523 K and strain rate of 5 × 10−4 s−1. The superplastic deformation behavior was attributed to the ultrafine-grained microstructures. The measured elongations mainly depended upon the initial strain rate and temperature, and the strain rate sensitivity m was ~0.5 for this condition. The results indicated that powder metallurgy and subsequent hot extrusion plus rolling were promising approaches to produce the ultrafine-grained magnesium alloy sheet with superplasticity.