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The Effects of Minor Addition of Nd and Er Elements on Dry Sliding Friction and Wear Characteristics of extruded Mg-6.0Zn-0.5Mn alloy
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College of Mechanical Engineering,Qingdao Technological University

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    Abstract:

    The effects of Nd and Er elements on the friction and wear behavior of Mg-6.0Zn-0.5Mn alloy were studied. More types and quantities of intermetallic compounds can hinder the migration and slip of the grain boundary, and the volume fraction of dynamic precipitates β_1^" with a smaller average length increased, which increases the hardness of the matrix and leads to reduce the wear rate of Mg-6.0Zn-0.5Mn-0.6Nd-0.3Er alloy. The wear mechanism of Mg-6.0Zn-0.5Mn alloy under a lower load of 5N is mainly abrasive wear, accompanied by oxidative wear; when the load increased to 20N, abrasive wear is weakened obviously and oxidative wear increases in Mg-6.0Zn-0.5Mn alloy. The wear mechanism of Mg-6.0Zn-0.5Mn-0.6Nd-0.3Er alloy under 5N is mainly abrasive wear, accompanied by oxidative wear and adhesion wear; due to the improved wear resistance, when the load increases to 20N, the wear mechanism of Mg-6.0Zn-0.5Mn-0.6Nd-0.3Er alloy is still mainly abrasive wear, accompanied by oxidative wear and weakened adhesion wear.

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[Bin-Jiang Lv, Sen Wang, Feng Guo, Jian Peng. The Effects of Minor Addition of Nd and Er Elements on Dry Sliding Friction and Wear Characteristics of extruded Mg-6.0Zn-0.5Mn alloy[J]. Rare Metal Materials and Engineering,2021,50(12):4516~4524.]
DOI:10.12442/j. issn.1002-185X.20200975

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History
  • Received:December 17,2020
  • Revised:January 18,2021
  • Adopted:February 04,2021
  • Online: January 09,2022
  • Published: December 24,2021