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YANG Yu-ling, LIU Chao, MA Yun-zhu, LIU Wen-sheng, LIU Yang, WU Lei, WANG Tao. Effects of rare earth element Y on the microstructure and mechanical properties of 2A12 aluminum alloy prepared by powder metallurgy method[J]. Powder Metallurgy Technology, 2020, 38(1): 3-9. DOI: 10.19591/j.cnki.cn11-1974/tf.2020.01.001
Citation: YANG Yu-ling, LIU Chao, MA Yun-zhu, LIU Wen-sheng, LIU Yang, WU Lei, WANG Tao. Effects of rare earth element Y on the microstructure and mechanical properties of 2A12 aluminum alloy prepared by powder metallurgy method[J]. Powder Metallurgy Technology, 2020, 38(1): 3-9. DOI: 10.19591/j.cnki.cn11-1974/tf.2020.01.001
shu

Effects of rare earth element Y on the microstructure and mechanical properties of 2A12 aluminum alloy prepared by powder metallurgy method

  • National Key Laboratory of Science and Technology for National Defence on High-strength Structural Materials, Central South University, Changsha 410083, China

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  • Corresponding author:

    MA Yun-zhu, E-mail: zhuzipm@csu.edu.cn

  • Received Date: December 09, 2018
    Graphical Abstract
    • Abstract
  • The 2A12 aluminum alloys were prepared by powder metallurgy technology with the addition of rare earth element Y in the mass fraction of 0, 0.2%, 0.4%, and 0.6% in this study. The effects of Y addition on the microstructure and mechanical properties of 2A12 aluminum alloy were investigated by the metallographic analysis, X-ray diffraction, scanning electron microscopy, energy spectrum analysis, and mechanical properties tests, and the distribution characteristics of Y in aluminum alloy were studied. The results show that, when the mass fraction of rare earth element Y is 0.2%, the 2A12 alloys achieve the highest tensile strength and the best plasticity. The Y addition can inhibit the grain growth of aluminum alloy during sintering. In addition, most of Y is distributed in the grain boundary of aluminium matrix as YAl, Cu2Y, and YAl2, and a small part of Y is dissolved into the aluminum matrix.
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    • References (21)
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