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Dynamic recrystallization behavior of AZ61 magnesium alloy 被引量：1

Dynamic recrystallization behavior of AZ61 magnesium alloy
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摘要 An AZ61 alloy was subjected to hot compression at temperatures ranging from 523K to 673K, with strain rates of 0.0011s -1. Flow softening occurs at all temperatures and strain rates. There are peak and plateau stresses on flow curves. The initiation and evolution of dynamic recrystallization(DRX) were studied by the flow softening mechanism based on the flow curves and microstructural observations. A linear relationship was established between the logarithmic value of the critical strain for DRX initiation( lnε_c) and the logarithmic value of the Zener-Hollomon parameter (lnZ). The volume fraction of DRX grain (φ_d) is formulated as a function of the process parameters including strain rate, temperature, and strain. The calculated values of φ_d agree well with the values extracted from the flow curves. The size of DRX grain(d) was also formulated as a function of the Zener-Hollomon parameter. This study suggests that DRX behavior of AZ61 can be predicated from plastic process parameters. An AZ61 alloy was subjected to hot compression at temperatures ranging from 523 K to 673 K, with strain rates of 0. 001 - 1 s^-1. Flow softening occurs at all temperatures and strain rates. There are peak and plateau stresses on flow curves. The initiation and evolution of dynamic recrystallization（DRX） were studied by the flow softening mechanism based on the flow curves and microstructural observations. A linear relationship was established between the logarithmic value of the critical strain for DRX initiation（lnεc） and the logarithmic value of the Zener-Hollomon parameter （lnZ）. The volume fraction of DRX grain （φd） is formulated as a function of the process parameters including strain rate, temperature, and strain. The calculated values of φd agree well with the values extracted from the flow curves. The size of DRX grain（d） was also formulated as a function of the Zener- Hollomon parameter. This study suggests that DRX behavior of AZ61 can be predicated from plastic process parameters.
作者 周海涛 严安庆 刘楚明
机构地区 School of Materials Science and Engineering Institute of Yichang Measurement Technology
出处 《中国有色金属学会会刊：英文版》 EI CSCD 2005年第5期1055-1061,共7页 Transactions of Nonferrous Metals Society of China
关键词 镁合金 动力分析 挤压工艺 流动软化 金属结构 金属压力加工 AZ61 magnesium alloy dynamic recrystallization critical strain flow softening
分类号 TG132.2 [一般工业技术—材料科学与工程]
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参考文献22

  • 1Sherby O D, Nieh T G, Wadsworth J. Some thoughts on future directions for research and applications in superplasticity [J]. Materials Science Forum, 1997,11:243 - 245.
  • 2Mukai T, Watanabe H, Higashi K. Application of superplasticity in commercial magnesium alloy for fabrication of structural components [J]. Material Science and Technology, 2000, 16(11 - 12): 1314 - 1321.
  • 3Loreth M, Morton J, Jacobson K, et al. Magnesium's future in automotive components: competing for the lightweight market in North American [A]. MacEwan S, Gilardeau J P. Recent Metallurgical Advances in Light Metals [C]. Met Soc CIM, Montreal, 1995. 11- 24.
  • 4ASM Specialty Handbook. Magnesium and Magnesium Alloys [M]. Materials Park, Ohio: ASM International, 2000. 2 - 7.
  • 5Closset B. Mechanical properties of extruded magnesium alloys [A]. Magnesium and Magnesium Alloys [M]. Materials Park, Ohio: ASM International,2000. 275-283.
  • 6Roucoules C, Yue S, Jonas J J. Effect of alloying elements on metadynamic recrystallization in HSLA steels [J]. Metall Mater Trans, 1995, A26:181 - 189.
  • 7Roucoules C, Hodgson P D, Yue S, et al. Softening and microstructural change following the dynamic recrystallization of austenite [J]. Metall Mater Trans,1994, A25: 389-396.
  • 8Mabuchi M, Ameyama K, Iwasaki H, et al. Low temperature superplasticity of AZ91 magnesium alloy with non-equilibrium grain boundaries[J]. Acta Mater, 1999, 47(7): 2047- 2057.
  • 9Ion S I, Humphrys F J, White S H. Dynamic recrystallization and the development of microstructure during the high temperature deformation of magnesium [J]. Acta Metal, 1982, 30: 1909-1919.
  • 10Tan J C, Tan M J. Dynamic continuous recrystallization characteristics in two stage deformation of Mg3Al-1Zn alloy sheet [J]. Mater Sci and Eng, 2003,A339: 124- 132.

同被引文献16

  • 1谭成文,胥珊娜,王鲁,陈志永,王富耻,才鸿年.Effect of temperature on mechanical behavior of AZ31 magnesium alloy[J].中国有色金属学会会刊：英文版,2007,17(1):41-45. 被引量：6
  • 2鲁世强,李鑫,王克鲁,董显娟,李臻熙,曹春晓.用于控制材料热加工组织与性能的动态材料模型理论及其应用[J].机械工程学报,2007,43(8):77-85. 被引量：24
  • 3BARNETT M.Influence of deformation conditions and texture on the high temperature flow stress of magnesium AZ31[J].Journal of Light Metals,2001,1(3):167-177.
  • 4LIU J,CUI Z S,LI C X.Modelling of flow stress characterizing dynamic recrystallization for magnesium alloy AZ31B[J].Computational Materials Science,2008,41(3):375-382.
  • 5ALSAMMAN T,GOTTSTEIN G.Dynamic recrystallization during high temperature deformation of magnesium[J].Materials Science and Engineering A,2008,490(1/2):411-420.
  • 6PRASAD Y V R K,RAO K P.Processing maps for hot deformation of rolled AZ31magnesium alloy plate:anisotropy of hot workability[J].Materials Science and Engineering A,2008,487(1/2):316-327.
  • 7PRASAD Y V R K,RAO K P.Processing maps and rate controlling mechanisms of hot deformation of electrolytic tough pitch copper in the temperature range 300-950℃[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2005,391(1/2):141-150.
  • 8PRASAD Y V R K,GEGEL H L,DORAIVELU S M,et al.Modelling of dynamic material behaviour in hot deformation:forging of Ti-6242[J].Metallurgical Transaction A,1984,15(10):1883-1892.
  • 9GANESAN G,RAGHUKANDAN K,KARTHIKEYAN R,et al.Development of processing map for6061Al/15%SiC p through neural networks[J].Journal of Materials Processing Technology,2005,166(3):423-429.
  • 10MENG G,LI B L,LI H M,et al.Hot deformation and processing maps of an Al-5.7wt.%Mg alloy with erbium[J].Materials Science and Engineering A,2009,517(1/2):132-137.

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中国有色金属学会会刊：英文版
2005年 第5期

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