열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제33권2호
  • /
  • Pages.49-56
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  • 2020
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  • 1225-1070(pISSN)
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  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
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열간압연에 따른 AZ61 및 AZ80 마그네슘 합금의 미세조직 및 집합조직 발달에 대한 연구

Development of Microstructure and Texture of AZ61 and AZ80 Magnesium Alloys by Hot Rolling

  • 이지호 (금오공과대학교 신소재공학부) ;
  • 박노진 (금오공과대학교 신소재공학부)
  • Lee, Ji Ho (School of Advanced Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Park, No Jin (School of Advanced Materials Science and Engineering, Kumoh National Institute of Technology)
  • 투고 : 2020.02.24
  • 심사 : 2020.03.09
  • 발행 : 2020.03.30
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초록

Magnesium alloy is a metal with high specific strength and light weight, and is attracting attention as a next generation metal for environmentally friendly automobiles and transportation equipment. However, magnesium alloys have a problem of degrading formability due to the basal texture developed during processing, and their application is limited. Although active researches on the control of textures have been conducted in order to minimize this problem, there is a lack of research on the formation of microstructures and textures according to elemental differences. In this study, AZ61 and AZ80 magnesium alloys were selected to investigate the effects of aluminum addition on the microstructure development of magnesium alloys. This research has proven that the increase of the rolling rate results in the decrease of the average grain size of the two alloys, the increase of the hardness, and the increase of the fraction of twins. As shown on this research below, the basal texture developed strongly as the rolling ratio increased. On the other hand, this research also has proven that the two alloys exhibited different texture strength and distribution tendencies, which could be due to the effects of aluminum addition on work hardening, grain size, and twin behavior.

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참고문헌

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