Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Relationship between Tensile Strength and Damping Capacity of Annealed Magnesium Alloys after Hot Rolling

열간 압연 후 어닐링처리한 Mg 합금의 인장강도와 감쇠능과의 관계

  • Lee, Gyu-Hyun (Dept. of Metallurgical Engineering, Pukyung University) ;
  • Oh, Eun-Ji (Dept. of Metallurgical Engineering, Pukyung University) ;
  • Kim, Kwon-Hoo (Dept. of Metallurgical Engineering, Pukyung University) ;
  • Kim, Jae-Nam (Dept. of Metallurgical Engineering, Pukyung University) ;
  • Kang, Chang-Yong (Dept. of Metallurgical Engineering, Pukyung University)
  • Received : 2014.10.08
  • Accepted : 2014.10.29
  • Published : 2014.11.30
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Abstract

In this study, the relationship between strength and damping capacity of annealed magnesium alloys after hot rolling was investigated. The microstructure of hot rolled magnesium consisted of dendrite structure and $Mg_{17}Al_{12}$ compounds precipitated along the grain boundary. The dendrite structure was dissipated, $Mg_{17}Al_{12}$ compounds was decomposed by annealing, and then its dissolved in ${\alpha}$-Mg. With an increasing the annealing temperature and time, strength was slowly decreased and damping capacity was slowly increased by the growth of grain size and decreasing of defects induced by hot rolling. In annealing treatmented magnesium alloys after hot rolling, damping capacity was decreased rapidly with an increase of strength. There was on proportional relationship between tensile strength, and damping capacity.

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References

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