Three-dimensional processing maps and microstructural evolution of a CNT-reinforced Al-Cu-Mg nanocomposite

作者: F. Mokdad , D.L. Chen , Z.Y. Liu , D.R. Ni , B.L. Xiao

DOI: 10.1016/J.MSEA.2017.07.028

关键词:

摘要: Abstract The determination of the optimum processing window a material at elevated temperatures is essential for metal forming. Such an “ideal” could be characterized by workability parameters power dissipation efficiency, Ziegler's instability criteria, and presence favorable microstructures. purpose present study to develop three-dimensional (3D) maps 2.0 wt% carbon nanotube (CNT) reinforced 2024Al nanocomposite manifest continuous changes efficiency flow domains involving key temperature, strain rate, via isothermal compressive tests. optimal hot working base alloy CNT/2024Al were identified higher lower rates, with moderately smaller due strengthening effect CNTs microstructural complexities. Instability occurred rates both nanocomposite. In stable domain dynamic recrystallization was observed occur, fraction recrystallized grains increased increasing deformation along more random textures.

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