Volume 36 Issue 3
Jun.  2021
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ZHANG Dapeng, FAN Yuanbo, NIU Yanping, SHI Changliang, CAI Yuehua. Effect of Sn Content on Microstructure, Machinability and Mechanical Properties of 2011 Aluminum Alloy Bar[J]. Development and Application of Materials, 2021, 36(3): 1-6.
Citation: ZHANG Dapeng, FAN Yuanbo, NIU Yanping, SHI Changliang, CAI Yuehua. Effect of Sn Content on Microstructure, Machinability and Mechanical Properties of 2011 Aluminum Alloy Bar[J]. Development and Application of Materials, 2021, 36(3): 1-6.
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Effect of Sn Content on Microstructure, Machinability and Mechanical Properties of 2011 Aluminum Alloy Bar

  • 1. Guangdong Lingsheng New Material Technology Co. Ltd., Foshan 528031, China;

  • 2. Center of Industrial Analysis and Testing, Guangdong Academy of Sciences, Guangzhou 510650, China;

  • 3. Guangdong Fine Special Profile Co. Ltd., Qingyuan 511533, China

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  • Received Date: October 14, 2020
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    • Abstract
  • The free cutting 2011 aluminum alloy bars without lead were prepared by substituting Sn and Bi for Pb. The effect of Sn content on microstructure, machinability and mechanical properties of 2011 aluminum alloy bar were studied by metallographic microscope, scanning electron microscope, tensile testing machine and high-speed lathe. The results showed that when the Sn content was 0.2%, Sn mainly existed in the form of SnBi eutectic phase in aluminum alloy bars. When the content of Sn exceeded 0.2%, Sn existed in the form of Sn phase and SnBi eutectic phase. The higher the Sn content was, the more the amount of Sn phase and SnBi eutectic phase were, and the better the machinability of aluminum alloy bar was. However, the tensile strength and the elongation of aluminum alloy bar decreased slightly with the increase of Sn content.
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    • References (11)
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