Internal Friction Peaks in Mg-0.6% Zr and Mg-Ni High Damping Magnesium Alloys

Diqing Wan, Jincheng Wang

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A broad relaxation peak, which contributes to the high damping capacity around room temperature, has been obtained in all high damping magnesium alloys. This peak is a dislocation-related relaxation peak, which is probably caused by the interaction between dislocation and point defects (vacancy and solid atoms) during the dislocation movement on the basal plane activated by heat. The grain boundary relaxation peak also has been observed in both Mg-Ni and Mg-0.6%Zr high damping alloys. However, it is necessary to point out that microstructure can affect the gain boundary relaxation. With Ni content increasing, the grain is refined and the grain boundary internal friction peak shifts to lower temperature. Compared with Mg-0.6%Zr alloy, the grain boundary internal friction peak shifts to higher temperature after adding a little yttrium (Y).

Original languageEnglish
Pages (from-to)2790-2793
Number of pages4
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume46
Issue number10
StatePublished - 1 Oct 2017

Keywords

  • High damping
  • Internal friction
  • Magnesium alloys

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