High-velocity impact characteristic of magnesium alloy under cryogenic temperature

Ryo Kubota, Akira Shimamoto, Meguru Tezuka, Daiju Numata, Kazuyoshi Takayama

Research output: Contribution to journalArticlepeer-review

Abstract

High-velocity impact experiments were conducted on magnesium alloy plates at room and cryogenic temperature, 298 K and 153 K. An aluminum sphere with room temperature impinged at the target plate with its speed ranging from 0.5 to 1.7 km/s in 100 Pa air. The impact process was visualized by shadowgraph, and recorded with the ultra-high speed video camera. Results of the experiment was compared to results which were obtained from previous experiments for a thicker specimen. In addition, it was compared to experimental results from aluminum alloy specimens that our co-investigator presented in the past. As a result, the difference was found on the damage of debris cloud impingement. It was affected by bumper material, plate temperature and impact velocity. It is thought that the bumper performance of the magnesium alloy is better than aluminum alloy, because the damage of magnesium alloy was distributed more shallowly and more widely than that of aluminum alloy.

Original languageEnglish
Pages (from-to)573-580
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume76
Issue number765
DOIs
Publication statusPublished - 2010 May

Keywords

  • Brittle fracture
  • Cryogenic temperature
  • HighVelocity impact
  • Impact strength
  • Magnesium alloy
  • Nonferrous metal
  • Space debris

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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